Breaking Kepler's Law
|
|
- Collin Mills
- 6 years ago
- Views:
Transcription
1 Breaking Kepler's Law 0% 15% 16.7% 25% 50% 75% The Kepler Curve Modified for a Finite Speed of Gravity 100% Charles D. Cole, III PO Box 160 Dinosaur, CO USA Charles.Cole@skysthelimit.com orcid.org/
2 orbit velocity Kepler s third law states a relationship between a mass s orbital velocity and its orbiting radius. v = $ & radius Figure 1. Kepler Curve The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 1
3 Planets line up quite nicely on a Kepler curve. Figure 2. Planets on a Kepler Curve The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 2
4 Figure 3. Galaxy rotation curve The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 3
5 Kepler assumes an immovable central mass orbited by a negligible mass. Figure 4. Immovable Central Mass Like the Kepler curve assumptions, solar systems exhibit a large mass (star) circumnavigated by much smaller orbiting masses (planets, moons, satellites). Galaxies, in contrast, have little central mass and the orbiting stars are of similar masses to each other. Figure 5. No Central Mass The following math modifies the Kepler curve to assume orbiting masses of similar size as is observed in galaxies and galactic clusters. A different curve arises if one derives a Kepler type law wherein one sets the centrifugal force equal to the radial pull of gravity when taking into consideration a finite speed of gravity. The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 4
6 The orbit geometry diagram assumes two similar masses A and B orbiting each other. Forces are calculated assuming the gravitational force on B at t + comes from A at t $, an earlier position of A on the orbit path. The gravity then arrives at an angle θ. At any finite speed of gravity, this reduces the distance gravity travels, both increasing its magnitude and introducing a tangent vector. Figure 6. Orbit geometry Like Newton s law, Kepler s law assumes that the force of gravity travels infinitely fast. Following are the steps taken to modify Kepler s law for a finite Vfg. Equations are derived from the orbit geometry diagram and plotted using the Desmos graphing program. The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 5
7 Define r, the distance that the force of gravity must travel. At any finite speed, the r between orbiting masses must decrease. In our Desmos program, r is called r 0. r { } Figure 7. r to r θ The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 6
8 Therefore, the gross gravity increases based on r in Newton s law: Gross radial pull from gravity: g $ = cos (θ) g 0 Gross tangential pull (dark energy) from gravity: gross gravity g + = sin (θ) g 0 gross radial pull x = 90 x = 90 gross tangential pull Figure 8. Gross gravity distribution θ The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 7
9 Corrections distributing the gross tangential dark energy vector among the gross radial and tangential vectors are shown on the orbit geometry diagram. Since the masses are in an orbit, not all of the gross tangential force ends up tangent to the orbit. Additional centrifugal force is added by a fraction of the gross tangential force. These correction vectors adjust the final radial and tangent vectors by breaking up the gross tangent vector into these radial and tangent correction vector sub-components. These are the Newtonian equations for relativistic corrections. If one misses these, the dark energy will be grossly overstated as Laplaces s calculations were. gross radial correction gross tangential correction gross radial correction: θ c 0 = g + cos (90 2θ) gross tangential correction: c $ = g + sin (90 2θ) Figure 9. Tangential acceleration vector distribution The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 8
10 Corrected radial pull: i $ = g $ c 0 Corrected tangential pull: d $ = g + c $ After corrections, they need to be added together again to find the net gravity s magnitude and direction. Combining these gives a net gravity g3 of: net gravity force θ corrected tangential pull corrected radial pull Figure 10. Net gravity calculations The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 9
11 Of which the radial vector f, the net inward pull is Kepler s law was derived by setting the formula for centrifugal force equal to Newton s law of gravity to hold the planets in balance, Instead of Newton s law, which also assumes an infinitely fast Vfg, set the centrifugal force (v^2/r) equal to the net inward pull f or, v + r = f (θ) Because the r in the centrifugal force equation is ½ the r in Newton s, this simplifies to Velocity v(θ) in units of [Vfg = 1] Net inward pull f(θ) in units of gravity where Vorb = 0 modified Kepler curve vs θ θ net inward pull Figure 11. The modified Kepler curve measured against θ The black dotted line is the Kepler curve, modified for a finite speed of gravity (measured against θ starting at -90 degrees). The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 10
12 To convert the θ angle to distance, set the appropriate multiple of the arc of travel for At $ to At + equal to the cord of gravity s travel from At $ to Bt +. Distance is the multiple n of Vfg) z + z + = θ π {0 < θ < 90} z = ($Y0 234(5)) Z [ {0< θ < 90} , Enter orbit velocity as a multiple n of Vfg s, or distance as a multiple n of V \] n = 1 z n is orbit speed in Vfg s, or distance in [r ] s. Here we have entered an orbit speed of 1 Vfg. The intersection of the curves gives the number of degrees in θ, in this example, θ Figure 12. θ to distance or θ to velocity conversion For convenience, a conversion chart is shown next, relating the θ angle to a linear distance measured in units of r when Vorb = Vfg The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 11
13 θ θ to distance conversion chart Distance in units of r at V w&x = V \] or velocity in units of V \] Figure 13. θ to distance or velocity conversion chart The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 12
14 The classic Kepler curve is shown here as connected purple dots and the modified Kepler curve in connected black dots. This modified Kepler curve exhibits the shape of typical galactic rotation curves. Compare with typical rotation curve observations shown in Figure 13. The modified Kepler curve eventually plateaus at a velocity of 70.7% of Vfg, with the velocity gap above the Kepler curve proper increasing the farther out one goes. Although there is a regression proof indicating that there must exist a speed at around Vfg = 350 kps where all the dark effects are predicted, including the 5.6 extra gravity found in galaxies, there is a fun quick method to estimate the (same) speed of gravity in your head so that the y axis can be labeled for velocities in kps. classic Kepler curve Kepler curve modified for a finite speed of gravity. Figure 14. Classic Kepler curve The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 13
15 Figure 15. Milky Way Galactic Rotation Curves, Y. Sofu, Figure 16. Solid line is smoothed Milky Way Galactic Rotation Curve, Y. Sofu, The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 14
16 To label the y axis with actual speeds in kps, Vfg must be estimated. 1. The largest known orbiting structures are galaxy clusters. The largest of these have a radius of 5 mpc. Unit Terminology kps kilometers per second (velocity) kpc kiloparsecs (distance) mpc megaparsecs (distance) 2. A Hubble constant of 70kps/mpc indicates the separation speed at a distance of 5mpc is 5mpc }0~ = 350 kps orbital velocity in kps or km sec $ traditional Kepler Vfg = modified Kepler Vfg = 350 kps Somewhere around this speed, the galaxies are separating at a rate faster than the gravity connecting them. distance in kiloparsecs or kpc Figure 18. Kepler curve when Vfg = 350 KPS Much like the stars blink out never to be seen again once they are outside the Hubble sphere, gravity blinks out at distances when/where the Hubble constant separation speed exceeds the speed of gravity. This appears to occur at 5mpc as evidenced in galactic clusters. The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 15
17 This chart s predicted rotational velocities plateau at 250kps with a dip to about 185kps at a distance of about 2.7kpc, similar to what we see in many galactic rotational charts. By assigning a value of 350kps to Vfg, and using 8 kpc as the average estimate for the distance of the sun to the galactic center, the sun s location can be identified on the chart. 220kps is used for an estimate of the speed of the sun on the Milky Way rotation curve. Note that the sun (orange spot) lies somewhat below the modified Kepler curve. The highest connected black dots represent the Kepler curve modified for a finite speed of gravity, in orbits of equal masses. The purple solid line shows the unmodified Kepler curve. The sun is overlaid on this graph at a distance of 8kpc and 220kps x = 8kpc y = 220kps orbital velocity in kps or km sec 1 Sun distance in kiloparsecs or kpc Figure 19. Sun s location on modified Kepler s curve when Vfg = 350 KPS The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 16
18 The evolution from the Kepler curve proper to the Kepler curve modified for a finite speed of gravity, shows the dependence of the curve shape on the percentage of central mass. The highest line represents a pure twobody orbit of equal masses with no central mass. Modified Kepler Curve % of Central Mass 0% As the percentage of central mass of the orbiting system increases, the modified curve drops to the regular Kepler curve which represents that 100% of the mass of an orbiting system is a central immovable mass. Milky Way Predicted Galaxy Average (ESO) 15% 16.7% 25% The ESO estimates the average percentage of central mass in galaxies to be 16.7 %, represented by the third line down in green. 50% The sun s location lies on a curve which implies that the central mass of the Milky Way is 15%. This is the second curve down in orange. Alternatively, a velocity of kps instead of the given 220 kps would put the sun on ESO s galactic average curve. Kepler Curve 75% 100% Thus, it is evident that Kepler s law better predicts the velocities of masses in orbit when it is modified for a finite speed of gravity. Figure 20. Dependence of the Kepler Curve on the percentage of central mass to total orbiting system mass The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 17
19 Modified Kepler for a two body orbit and no central mass Milky Way appears to lie on the 15% CM curve Galactic Average = 1/6 Kepler Curve % of Central Mass 0% 15% 25% 50% 75%! 100% Sun distance to galaxy s axis.!"#$! The Shape of Kepler s curve is dependent on the percentage of central mass to total system mass. Figure 21. Kepler curve dependence on central mass percentage The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 18
20 Conclusion and Ramifications Dark Matter The sole reason that Dark Matter was theorized was to explain the systemic differences between the observed galaxy (or galaxy cluster) rotation curves and the rotation curve predicted by Kepler s law, which seems only to accurately forecast rotation speeds of planets and moons. By recognizing that there is a fundamental difference in the distribution of mass in galactic orbits and solar system orbits, a more general curve is derived. This curve, or really a field of curves, shows the dependence of the rotation curve on the [central mass to total system mass] percentage. When a Vfg of 350 kps is used in an analysis of a 2-body orbit of equal masses (no central mass), curves that match the observed galactic rotation curves result. The sun appears to be on the line representing a Milky Way central mass of 15%. This is very close to the ESO s claim that the average central mass of galaxies is 1/6 or 16.7%. Given the implied lack of precision in a fraction, the Milky Way could well be on this curve. Newton s Law Newton derived his law of gravity from Kepler s third law. This brought into Newton s law the Kepler assumption that Vfg = infinity which worked perfectly for measurements of the era. Using a Vfg considerably less than c, a different radial gravity formula is developed for orbiting masses which, when set equal to centrifugal force, predicts all rotationally supported orbiting system rotation curves, from moons to planets to stars to galaxy clusters, when the percentage of central mass is known. In the interest of simplicity, there is an assumption in Kepler s law that one of the masses of the orbiting system is unaffected by the other. This paper presents math correcting this, although the elegant simplicity of V = $ is sacrificed. & The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 19
21 General Relativity In General Relativity, the speed of gravity is usually considered c. In any mathematically driven world, this fast yet finite speed of gravity would generate a small tangential acceleration force. Einstein made this leftover vector disappear by saying that, in this one case only, the speed of gravity was infinitely fast and placed it outside the general relativity paradigm that created it, putting it instead in a mechanistic physics category which then makes it disappear by changing the speed of the gravity which created it, from c back to infinity. This unwanted leftover tangential acceleration vector will derive from any finite Vfg and predicts unstable orbits (although friction matching this vector makes for stable orbits). This vector would then create a net expansion in orbiting systems and explain the outward forcing dark energy, at least in direction. To match the magnitude of dark matter and dark energy, more aberration is required than when one uses c as Vfg. Using the same math with any finite speed of gravity creates identical curves where only the y-axis velocity labels are different. By using Vfg = 350 kps, a velocity hundreds of times slower that c, the ratio of dark matter to dark energy matches observed. This does in no way change GR s conclusions concerning time, height and width, because unlike gravity, they are measured by light which does indeed travel at c. In fact, by using Vfg = 350 kps, General Relativity s gravity predictions are improved since the masses of galaxies are increased to the point where no extra mass is required, completely obviating the need for dark matter. The same logic would imply that magnetism or any other force would also dilate at high relative speeds. The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 20
22 Dark Energy From the same geometry that allowed the calculation of the radial gravity at any relative velocity, the tangential acceleration vector or dark energy can be plotted. dotted orange line is the dark energy curve against θ in units of V w&x = 0] Figure 22. Close-up of the dark energy rotation curve at various θ s showing slowing acceleration before accelerating acceleration. This graph shows dark energy accelerated acceleration as a function of θ. e $ ] The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 21
23 dotted red is the dark energy curve against distance in units of = 0] Figure 23. Close-up of dark energy rotation curve at various distances, showing the different phases of tangential acceleration from a slowing acceleration to an accelerated acceleration. The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 22
24 dotted red is the dark energy curve against distance in units of = 0] Figure 24. Net tangential force or dark energy overlaid on a field of Kepler "type" curves. The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 23
25 Bibliography Yu. Baryshev. Expanding Space: The Root of Conceptual Problems of the Cosmological Physics. Astronomical Institute of the St.-Petersburg State University, St.-Petersburg, Russia. 1 Oct Wikipedia. Nicolas Fatio de Duillier. (accessed 2015). Richard Feynman. The Relation of Mathematics and Physics - Part 1- The Law of Gravitation (full Version Richard Feynman. YouTube, (accessed 2015). Hafele, Joseph C. Causal Version of Newtonian Theory by Time Retardation of the Gravitational Field Explains the Flyby Anomalies. April Web. Wikipedia. Pierre-Simon Laplace. (accessed 2015). Wikipedia. Georges-Louis LeSage. (accessed 2015). McGaugh, Stacy S., Federico Lelli, and James M. Schombert. The Radial Acceleration Relation in Rotationally Supported Galaxies. Department of Astronomy, Case Western Reserve University, 21 Sept arxiv: v1, Web. Newton, Isaac. The Preliminary Manuscripts for Isaac Newton's 1687 Principia. 1st ed. England. Cambridge UP; Wikipedia. Jan Oort. (accessed 2015). Rubin, V. C. Bright Galaxies, Dark Matters. 1st ed. Woodbury, NY. Amer. Inst. Phys. Press; 1997 Sanders, R. H. The Dark Matter Problem: A Historical Perspective. 1st ed. Cambridge. Cambridge University Press; Van Flandern, Thomas. The Speed of Gravity What the Experiments Say. Physics Letters A 250:1-11 (1998) Zwicky, F. (1933) Die Rotverscheibung von extragalaktischen Nebeln. Helvetica Physica Acta 6: pp Zwicky, F. (1937a) Nebulae as Gravitational Lenses. Physical Review 51: 290. Zwicky, F. (1937b) On the Masses of Nebulae and of Clusters of Nebulae. Astrophysical Journal 86: The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 24
26 Table 1. Meaning of Commonly Used Symbols Symbol A Meaning One of two orbiting masses At 1 Location of A at t 1 At 2 Location of A at t 2 AU Astronomical units B The other orbiting mass Bt 1 Location of B at t 1 Bt 2 Location of B at t 2 c Speed of light c 0 c 1 Central mass d 2 g 0 i 1 kpc EOS e 1 F g G g 0 g 1 g 2 g 3 Gross radial pull Gross tangential pull Non-orbiting part of galaxy Connected tangential pull Gross gravity Corrected radial pull Kiloparsecs European Southern Observatory Dark energy as a function of θ Force of gravity Gravitational constant Gross gravity Gross radial pull Gross tangential pull Net gravity Km/s Km/s = KPS = KM sec 7$ mpc Megaparsecs m 1 m 2 r r r o r v V = 1 r V fg V orb One of two masses in Newton s Law One of two masses in Newton s Law Distance between two masses in Newton s Law of Gravity Radius Distance gravity travels when taking into consideration a finite speed for gravity bases a two-body analysis. Velocity Classic Kepler curve Velocity of force of gravity Velocity of orbit The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 25
27 V sun Velocity of sun around the Milky Way θ Angle at which gravity from At $ arrives at Bt + z Process converting θ to distance or velocity z 2 f (θ) At + is in the 12:00 position Net inward pull as a function of θ Listed above are symbols used throughout this paper and their meanings. The Kepler curve modified for a finite speed of gravity. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 26
Fatal Flaw of Relativity
Fatal Flaw of Relativity Charles D. Cole, III Fatal Flaw of Relativity, Copyright 2016 [Charles D. Cole, III]. All Rights Reserved. 2/5/17 1:56 PM 1. I know this is a talk on gravity, which always traces
More informationA Tale of Two Physics
A Tale of Two Physics Charles D. Cole, III PO Box 160 Dinosaur, CO, 81610 United States A Tale of Two Physics. Copyright 2017 [Charles D. Cole]. All Rights Reserved. 1. A Tale of Two Physics It was the
More informationCopyright 2010 Pearson Education, Inc. GRAVITY. Chapter 12
GRAVITY Chapter 12 Units of Chapter 12 Newton s Law of Universal Gravitation Gravitational Attraction of Spherical Bodies Kepler s Laws of Orbital Motion Gravitational Potential Energy Energy Conservation
More informationThe Milky Way, Hubble Law, the expansion of the Universe and Dark Matter Chapter 14 and 15 The Milky Way Galaxy and the two Magellanic Clouds.
The Milky Way, Hubble Law, the expansion of the Universe and Dark Matter Chapter 14 and 15 The Milky Way Galaxy and the two Magellanic Clouds. Image taken from the European Southern Observatory in Chile
More informationThe Scale of the Cosmos
The Scale of the Cosmos Scale defined as relative magnitude. Astronomy deals with objects on a vast range of size scales and time scales. Most of these size and time scales are way beyond our every-day
More informationThe Scale of the Cosmos
The Scale of the Cosmos Scale defined as relative magnitude. Astronomy deals with objects on a vast range of size scales and time scales. Most of these size and time scales are way beyond our every-day
More informationOuter space: A matter of gravity
1997 2009, Millennium Mathematics Project, University of Cambridge. Permission is granted to print and copy this page on paper for non commercial use. For other uses, including electronic redistribution,
More informationChapter 12 Gravity. Copyright 2010 Pearson Education, Inc.
Chapter 12 Gravity Units of Chapter 12 Newton s Law of Universal Gravitation Gravitational Attraction of Spherical Bodies Kepler s Laws of Orbital Motion Gravitational Potential Energy Energy Conservation
More informationLESSON 1. Solar System
Astronomy Notes LESSON 1 Solar System 11.1 Structure of the Solar System axis of rotation period of rotation period of revolution ellipse astronomical unit What is the solar system? 11.1 Structure of the
More informationWhat is the solar system?
Notes Astronomy What is the solar system? 11.1 Structure of the Solar System Our solar system includes planets and dwarf planets, their moons, a star called the Sun, asteroids and comets. Planets, dwarf
More informationClass 5 Cosmology Large-Scale Structure of the Universe What do we see? Big Bang Cosmology What model explains what we see?
Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System
More information1. Which of the following correctly lists our cosmic address from small to large?
1. Which of the following correctly lists our cosmic address from small to large? (a) Earth, solar system, Milky Way Galaxy, Local Group, Local Super Cluster, universe (b) Earth, solar system, Milky Way
More informationAstronomy 102: Stars and Galaxies Review Exam 3
October 31, 2004 Name: Astronomy 102: Stars and Galaxies Review Exam 3 Instructions: Write your answers in the space provided; indicate clearly if you continue on the back of a page. No books, notes, or
More informationGravitation and Dark Matter
PHYS 1105 SMU Physics Dept. Gravitation and Dark Matter Goal: To calculate the amount of Dark Matter in galaxy NGC 134 The (Very) Big Picture The force of gravity acts upon any object with mass and is
More informationPHYS 106 Fall 2151 Homework 3 Due: Thursday, 8 Oct 2015
PHYS 106 Fall 2151 Homework 3 Due: Thursday, 8 Oct 2015 When you do a calculation, show all your steps. Do not just give an answer. You may work with others, but the work you submit should be your own.
More information7/5. Consequences of the principle of equivalence (#3) 1. Gravity is a manifestation of the curvature of space.
7/5 Consequences of the principle of equivalence (#3) 1. Gravity is a manifestation of the curvature of space. Follow the path of a light pulse in an elevator accelerating in gravityfree space. The dashed
More informationActive Galaxies and Galactic Structure Lecture 22 April 18th
Active Galaxies and Galactic Structure Lecture 22 April 18th FINAL Wednesday 5/9/2018 6-8 pm 100 questions, with ~20-30% based on material covered since test 3. Do not miss the final! Extra Credit: Thursday
More informationToday: Start Ch. 18: Cosmology. Homework # 5 due next Wed. (HW #6 is online)
Today: Start Ch. 18: Cosmology Homework # 5 due next Wed. (HW #6 is online) Dark Matter! A rotation curve is a graph of how fast a something is rotating, as a function of distance from the center.! We
More informationGravitation & Kepler s Laws
Gravitation & Kepler s Laws What causes YOU to be pulled down to the surface of the earth? THE EARTH.or more specifically the EARTH S MASS. Anything that has MASS has a gravitational pull towards it. F
More informationCenters of Galaxies. = Black Holes and Quasars
Centers of Galaxies = Black Holes and Quasars Models of Nature: Kepler Newton Einstein (Special Relativity) Einstein (General Relativity) Motions under influence of gravity [23] Kepler The planets move
More informationTristan Clark. And. Dr. Stephen Alexander. Capstone Final Paper. Miami University of Ohio
1 N- Body Simulations of a Dwarf Spheroidal Galaxy Comparing Newtonian, Modified Newtonian, and Dark Matter Models. Tristan Clark And Dr. Stephen Alexander Capstone Final Paper Miami University of Ohio
More informationChapter 3 - Gravity and Motion. Copyright (c) The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Chapter 3 - Gravity and Motion Copyright (c) The McGraw-Hill Companies, Inc. Permission required for reproduction or display. In 1687 Isaac Newton published the Principia in which he set out his concept
More informationGeneral Relativity and Cosmology. The End of Absolute Space Cosmological Principle Black Holes CBMR and Big Bang
General Relativity and Cosmology The End of Absolute Space Cosmological Principle Black Holes CBMR and Big Bang The End of Absolute Space (AS) Special Relativity (SR) abolished AS only for the special
More informationChapter 12 Gravity. Copyright 2010 Pearson Education, Inc.
Chapter 12 Gravity Units of Chapter 12 Newton s Law of Universal Gravitation Gravitational Attraction of Spherical Bodies Kepler s Laws of Orbital Motion Gravitational Potential Energy Energy Conservation
More informationRelationship Between Newtonian and MONDian Acceleration
Advances in Applied Physics, Vol. 4, 2016, no. 1, 31-37 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/aap.2016.6810 Relationship Between Newtonian and MONDian Acceleration A. S. Sarabi Department
More informationWOLFGANG KLASSEN DARK MATTER
1 WOLFGANG KLASSEN DARK MATTER "Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D" (Press release). NASA. 7 January 2007. DARK MATTER 2 CONTENTS 1.Relating Mass and Light Tulley-Fisher relation
More informationHW Chapter 5 Q 7,8,18,21 P 4,6,8. Chapter 5. The Law of Universal Gravitation Gravity
HW Chapter 5 Q 7,8,18,21 P 4,6,8 Chapter 5 The Law of Universal Gravitation Gravity Newton s Law of Universal Gravitation Every particle in the Universe attracts every other particle with a force that
More informationIn this chapter, you will consider the force of gravity:
Gravity Chapter 5 Guidepost In this chapter, you will consider the force of gravity: What were Galileo s insights about motion and gravity? What were Newton s insights about motion and gravity? How does
More informationChapter 13. Universal Gravitation
Chapter 13 Universal Gravitation Planetary Motion A large amount of data had been collected by 1687. There was no clear understanding of the forces related to these motions. Isaac Newton provided the answer.
More informationAy 1 Lecture 2. Starting the Exploration
Ay 1 Lecture 2 Starting the Exploration 2.1 Distances and Scales Some Commonly Used Units Distance: Astronomical unit: the distance from the Earth to the Sun, 1 au = 1.496 10 13 cm ~ 1.5 10 13 cm Light
More informationName Date Period. 10. convection zone 11. radiation zone 12. core
240 points CHAPTER 29 STARS SECTION 29.1 The Sun (40 points this page) In your textbook, read about the properties of the Sun and the Sun s atmosphere. Use each of the terms below just once to complete
More informationThe interpretation is that gravity bends spacetime and that light follows the curvature of space.
7/8 General Theory of Relativity GR Two Postulates of the General Theory of Relativity: 1. The laws of physics are the same in all frames of reference. 2. The principle of equivalence. Three statements
More informationOne of the factors that misled Herschel into concluding that we are at the Universe's center was
Homework 11! This is a preview of the draft version of the quiz Started: Apr 14 at 9:17am Quiz Instruc!ons Question 1 One of the factors that misled Herschel into concluding that we are at the Universe's
More informationThe MOND Limit of the Inverse Square Law
The MOND Limit of the Inverse Square Law Abstract Kurt L. Becker This paper attempts to give a theoretical foundation for the Modified Newtonian Dynamics equations developed by M. Milgrom Ref.1. It will
More informationIt is about 100,000 ly across, 2,000 ly thick, and our solar system is located 26,000 ly away from the center of the galaxy.
The Galaxies The Milky Way Galaxy Is a spiral galaxy in which our solar system is located. The center of the galaxy lies in the Sagittarius Constellation. It is about 100,000 ly across, 2,000 ly thick,
More informationMOdified Newtonian Dynamics an introductory review. Riccardo Scarpa European Southern Observatory
MOdified Newtonian Dynamics an introductory review By Riccardo Scarpa European Southern Observatory Everything started in 1933 with the work by Zwicky on the Coma cluster of galaxies, but were galaxy rotation
More informationLicia Verde. ICREA & ICC-UB-IEEC CERN Theory Division.
Licia Verde ICREA & ICC-UB-IEEC CERN Theory Division http://icc.ub.edu/~liciaverde AIMS and GOALS Observational cosmology has been evolving very rapidly over the past few years Theoretical cosmology is
More informationGravitation. Objectives. The apple and the Moon. Equations 6/2/14. Describe the historical development of the concepts of gravitational force.
Gravitation Objectives Describe the historical development of the concepts of gravitational force. Describe and calculate how the magnitude of the gravitational force between two objects depends on their
More informationHubble s Constant and Flat Rotation Curves of Stars: Are Dark Matter and Energy Needed?
Journal of Modern Physics, 7, 8, 4-34 http://www.scirp.org/journal/jmp ISSN Online: 53-X ISSN Print: 53-96 Hubble s Constant and Flat Rotation Curves of Stars: Are ark Matter and Energy Needed? Alexandre
More informationMiami Dade County Public Schools Educational Transformation Office and the Division of Academics: Department of Science
Unit 5 Assessment Comprehensive Science III Directions: Read through the questions carefully and select the best answer choice on your bubble sheet. 1. Space exploration has advanced our knowledge of the
More informationAstronomy 1504 Section 10 Final Exam Version 1 May 6, 1999
Astronomy 1504 Section 10 Final Exam Version 1 May 6, 1999 Reminder: When I write these questions, I believe that there is one one correct answer. The questions consist of all parts a e. Read the entire
More informationAST 301: What you will have to learn and get used to 1. Basic types of objects in the universe
AST 301: What you will have to learn and get used to 1. Basic types of objects in the universe Planets, stars, galaxies, a few things inbetween--look through your textbook soon! You will have to learn:
More information8. The Expanding Universe, Revisited
8. The Expanding Universe, Revisited A1143: History of the Universe, Autumn 2012 Now that we have learned something about Einstein s theory of gravity, we are ready to revisit what we have learned about
More information12/1/2014. Chapter 5 Circular Motion; Gravitation. Contents of Chapter 5. Contents of Chapter Kinematics of Uniform Circular Motion
Lecture PowerPoints Chapter 5 Physics: Principles with Applications, 7 th edition Giancoli Chapter 5 Circular Motion; Gravitation This work is protected by United States copyright laws and is provided
More informationType Ia Supernova Observations. Supernova Results:The Context. Supernova Results. Physics 121 December 4, fainter. brighter
Physics 11 December 4, 009 Today Supernovae revisited Galaxy Rotation Curves Dark Matter & Dark Energy Scaling Factor a(t) Course Evaluations Type Ia Supernova Observations Distant supernovae are than
More informationBlack Holes, or the Monster at the Center of the Galaxy
Black Holes, or the Monster at the Center of the Galaxy Learning Objectives! How do black holes with masses a few times that of our Sun form? How can we observe such black holes?! Where and how might you
More informationChapter 5 Circular Motion; Gravitation
Chapter 5 Circular Motion; Gravitation Units of Chapter 5 Kinematics of Uniform Circular Motion Dynamics of Uniform Circular Motion Highway Curves, Banked and Unbanked Nonuniform Circular Motion Centrifugation
More informationKepler, Newton, and laws of motion
Kepler, Newton, and laws of motion First: A Little History Geocentric vs. heliocentric model for solar system (sec. 2.2-2.4)! The only history in this course is this progression: Aristotle (~350 BC) Ptolemy
More informationAP Physics 1 Chapter 7 Circular Motion and Gravitation
AP Physics 1 Chapter 7 Circular Motion and Gravitation Chapter 7: Circular Motion and Angular Measure Gravitation Angular Speed and Velocity Uniform Circular Motion and Centripetal Acceleration Angular
More informationNewton s Laws and the Nature of Matter
Newton s Laws and the Nature of Matter The Nature of Matter Democritus (c. 470-380 BCE) posited that matter was composed of atoms Atoms: particles that can not be further subdivided 4 kinds of atoms: earth,
More informationD.G. Taylor Home: Cell: Work: Words: 1584 February 14, 2015
A Relativistic Light Speed Maximum of Escape Velocity D.G. Taylor dgtaylor@telusplanet.net Home: 780-4547263 Cell: 780-9996134 Work: 780-4441290 Words: 1584 February 14, 2015 1.0 Introduction/Abstract...
More informationLecture Outlines. Chapter 26. Astronomy Today 8th Edition Chaisson/McMillan Pearson Education, Inc.
Lecture Outlines Chapter 26 Astronomy Today 8th Edition Chaisson/McMillan Chapter 26 Cosmology Units of Chapter 26 26.1 The Universe on the Largest Scales 26.2 The Expanding Universe 26.3 The Fate of the
More informationThere are three basic types of galaxies:
Galaxies There are three basic types of galaxies: Spirals Ellipticals Irregulars To make a long story short, elliptical galaxies are galaxies that have used up all their gas forming stars, or they have
More informationAnswers. The Universe. Year 10 Science Chapter 6
Answers The Universe Year 10 Science Chapter 6 p133 1 The universe is considered to be the whole of all matter, energy, planets, solar systems, galaxies, and space. Many definitions of the universe also
More informationA = 6561 times greater. B. 81 times greater. C. equally strong. D. 1/81 as great. E. (1/81) 2 = 1/6561 as great Pearson Education, Inc.
Q13.1 The mass of the Moon is 1/81 of the mass of the Earth. Compared to the gravitational force that the Earth exerts on the Moon, the gravitational force that the Moon exerts on the Earth is A. 81 2
More informationIB Physics - Astronomy
Solar System Our Solar System has eight planets. The picture below shows their relative sizes, but NOT their relative distances. A planet orbits the sun, and has gravitationally cleared its orbital area
More informationGeneral Physics 1 Lab - PHY 2048L Lab 2: Projectile Motion / Solar System Physics Motion PhET Lab Date. Part 1: Projectile Motion
General Physics 1 Lab - PHY 2048L Name Lab 2: Projectile Motion / Solar System Physics Motion PhET Lab Date Author: Harsh Jain / PhET Source: Part 1: Projectile Motion http://phet.colorado.edu/en/simulation/projectile-motion
More informationGRAVITY IS AN ATTRACTIVE FORCE
WHAT IS GRAVITY? Gravity: force of attraction between objects due to their mass Gravity is a noncontact force that acts between two objects at any distance apart GRAVITY IS AN ATTRACTIVE FORCE Earth s
More informationUnit 5 Gravitation. Newton s Law of Universal Gravitation Kepler s Laws of Planetary Motion
Unit 5 Gravitation Newton s Law of Universal Gravitation Kepler s Laws of Planetary Motion Into to Gravity Phet Simulation Today: Make sure to collect all data. Finished lab due tomorrow!! Universal Law
More informationWhat is Earth Science?
What is Earth Science? A.EARTH SCIENCE: the study of Earth and its history B. Earth science is divided into 4 main branches: 1. Geology: study of the lithosphere 2. Oceanography: study of oceans 3. Meteorology:
More informationName and Student ID Section Day/Time:
AY2 - Overview of the Universe - Midterm #1 - Instructor: Maria F. Duran Name and Student ID Section Day/Time: 1) Imagine we ve discovered a planet orbiting another star at 1 AU every 6 months. The planet
More informationSOLAR SYSTEM, STABILITY OF ORBITAL MOTIONS, SATELLITES
SOLAR SYSTEM, STABILITY OF ORBITAL MOTIONS, SATELLITES Q1. The figure below shows what scientists over 1000 years ago thought the solar system was like. Give one way that the historical model of the solar
More informationA Survey of Modified Newtonian Dynamics. The current model of the universe builds on the assumption that the entire
Andy Terrel May 7, 2004 Phys. 4304 Myles A Survey of Modified Newtonian Dynamics The current model of the universe builds on the assumption that the entire universe follows the same physical laws as those
More informationChapter 13: universal gravitation
Chapter 13: universal gravitation Newton s Law of Gravitation Weight Gravitational Potential Energy The Motion of Satellites Kepler s Laws and the Motion of Planets Spherical Mass Distributions Apparent
More informationPHYSICS. Chapter 8 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc.
PHYSICS FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E Chapter 8 Lecture RANDALL D. KNIGHT Chapter 8. Dynamics II: Motion in a Plane IN THIS CHAPTER, you will learn to solve problems about motion
More informationUnit 5: Gravity and Rotational Motion. Brent Royuk Phys-109 Concordia University
Unit 5: Gravity and Rotational Motion Brent Royuk Phys-109 Concordia University Rotational Concepts There s a whole branch of mechanics devoted to rotational motion, with angular equivalents for distance,
More informationo Terms to know o Big Bang Theory o Doppler Effect o Redshift o Universe
Standard 1: Students will understand the scientific evidence that supports theories that explain how the universe and the solar system developed. They will compare Earth to other objects in the solar system.
More informationGR and Spacetime 3/20/14. Joys of Black Holes. Compact Companions in Binary Systems. What do we mean by the event horizon of a black hole?
ASTR 1040: Stars & Galaxies Prof. Juri Toomre TA: Ryan Orvedahl Lecture 20 Thur 20 Mar 2014 zeus.colorado.edu/astr1040-toomre Tycho Brahe SNR (1572) Joys of Black Holes Black holes, their general properties,
More informationChapter 8. Dynamics II: Motion in a Plane
Chapter 8. Dynamics II: Motion in a Plane Chapter Goal: To learn how to solve problems about motion in a plane. Slide 8-2 Chapter 8 Preview Slide 8-3 Chapter 8 Preview Slide 8-4 Chapter 8 Preview Slide
More informationPHYS 162 Elementary Astronomy
PHYS 162 Elementary Astronomy Instructor: Mary Anne Cummings, macc@niu.edu Book: Discovering the Essential Universe, Neil Comins (5 th edition but can use 4 th Ed.) Recommended: The Cosmic Perspective
More informationChapter 5 Lecture Notes
Formulas: a C = v 2 /r a = a C + a T F = Gm 1 m 2 /r 2 Chapter 5 Lecture Notes Physics 2414 - Strauss Constants: G = 6.67 10-11 N-m 2 /kg 2. Main Ideas: 1. Uniform circular motion 2. Nonuniform circular
More informationAn Introduction to AST 112 Stars, Galaxies, and the Cosmos
An Introduction to AST 112 Stars, Galaxies, and the Cosmos What is Astronomy? 50 years ago, astronomy was the study of everything outside Earth s atmosphere: the planets, the Sun, stars, galaxies, the
More informationThe motions of stars in the Galaxy
The motions of stars in the Galaxy The stars in the Galaxy define various components, that do not only differ in their spatial distribution but also in their kinematics. The dominant motion of stars (and
More informationRadial Acceleration. recall, the direction of the instantaneous velocity vector is tangential to the trajectory
Radial Acceleration recall, the direction of the instantaneous velocity vector is tangential to the trajectory 1 Radial Acceleration recall, the direction of the instantaneous velocity vector is tangential
More informationMS-ESS1-1 Earth's Place in the Universe
MS-ESS1-1 Earth's Place in the Universe Students who demonstrate understanding can: MS-ESS1-1. Develop and use a model of the Earth-sun-moon system to describe the cyclic patterns of lunar phases, eclipses
More informationThe Cosmological Distance Ladder. It's not perfect, but it works!
The Cosmological Distance Ladder It's not perfect, but it works! First, we must know how big the Earth is. Next, we must determine the scale of the solar system. Copernicus (1543) correctly determined
More informationGravitational Lensing. A Brief History, Theory, and Applications
Gravitational Lensing A Brief History, Theory, and Applications A Brief History Einstein (1915): light deflection by point mass M due to bending of space-time = 2x Newtonian light tangentially grazing
More informationGravity and the Orbits of Planets
Gravity and the Orbits of Planets 1. Gravity Galileo Newton Earth s Gravity Mass v. Weight Einstein and General Relativity Round and irregular shaped objects 2. Orbits and Kepler s Laws ESO Galileo, Gravity,
More informationSaint Lucie County Science Scope and Sequence
Course: Honors Physics 1 Course Code: 2003390 UNIT 4 TOPIC of STUDY: Newton s Laws of Motion and the Law of Gravity STANDARDS: 10: Energy, 12: Motion ~Net force produces motion ~There are four fundamental
More informationQuestion 8.1: the following: (a) You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting
More informationλ λ CHAPTER 7 RED-SHIFTS AND ENERGY BALANCE Red-shifts Energy density of radiation Energy density of matter Continuous creation 7.
CHAPTER 7 RED-SHIFTS AND ENERGY BALANCE Red-shifts Energy density of radiation Energy density of matter Continuous creation Religion teaches us that matter in all its forms, including ourselves, is created
More informationChapter 9 Lecture. Pearson Physics. Gravity and Circular Motion. Prepared by Chris Chiaverina Pearson Education, Inc.
Chapter 9 Lecture Pearson Physics Gravity and Circular Motion Prepared by Chris Chiaverina Chapter Contents Newton's Law of Universal Gravity Applications of Gravity Circular Motion Planetary Motion and
More information1 The Solar System. 1.1 a journey into our galaxy
1 The Solar System Though Pluto, and the far-flung depths of the Solar System, is the focus of this book, it is essential that Pluto is placed in the context of the planetary system that it inhabits our
More informationCosmic Landscape Introduction Study Notes
Cosmic Landscape Introduction Study Notes About how much bigger in radius is the Sun than the Earth? The ratio of the Sun's radius to the Earth's radius is 1,392,000/12756 = 109.1 How big is an astronomical
More informationBlack Holes. Jan Gutowski. King s College London
Black Holes Jan Gutowski King s College London A Very Brief History John Michell and Pierre Simon de Laplace calculated (1784, 1796) that light emitted radially from a sphere of radius R and mass M would
More informationUniform Circular Motion
Circular Motion Uniform Circular Motion Uniform Circular Motion Traveling with a constant speed in a circular path Even though the speed is constant, the acceleration is non-zero The acceleration responsible
More informationAstronomy 182: Origin and Evolution of the Universe
Astronomy 182: Origin and Evolution of the Universe Prof. Josh Frieman Lecture 7 Oct. 30, 2015 Today Relativistic Cosmology Dark Side of the Universe I: Dark Matter Assignments This week: read Hawley and
More informationEarth Space Systems. Semester 1 Exam. Astronomy Vocabulary
Earth Space Systems Semester 1 Exam Astronomy Vocabulary Astronomical Unit- Aurora- Big Bang- Black Hole- 1AU is the average distance between the Earth and the Sun (93 million miles). This unit of measurement
More informationToday. life the university & everything. Reminders: Review Wed & Fri Eyes to the web Final Exam Tues May 3 Check in on accomodations
life the university & everything Phys 2130 Day 41: Questions? The Universe Reminders: Review Wed & Fri Eyes to the web Final Exam Tues May 3 Check in on accomodations Today Today: - how big is the universe?
More informationChapter 3 Cosmology 3.1 The Doppler effect
Chapter 3 Cosmology 3.1 The Doppler effect Learning objectives Explain why the wavelength of waves from a moving source depends on the speed of the source. Define Doppler shift. Measure the velocity of
More informationASTR 200 : Lecture 21. Stellar mass Black Holes
1 ASTR 200 : Lecture 21 Stellar mass Black Holes High-mass core collapse Just as there is an upper limit to the mass of a white dwarf (the Chandrasekhar limit), there is an upper limit to the mass of a
More information- 5 - TEST 2. This test is on the final sections of this session's syllabus and. should be attempted by all students.
- 5 - TEST 2 This test is on the final sections of this session's syllabus and should be attempted by all students. QUESTION 1 [Marks 23] A thin non-conducting rod is bent to form the arc of a circle of
More informationUnit 5: Gravity and Rotational Motion
Rotational Concepts Unit 5: Gravity and Rotational Motion There s a whole branch of mechanics devoted to rotational motion, with angular equivalents for distance, speed, acceleration, mass, force, momentum
More informationAstro 301/ Fall 2006 (50405) Introduction to Astronomy
Astro 301/ Fall 2006 (50405) Introduction to Astronomy http://www.as.utexas.edu/~sj/a301-fa06 Instructor: Professor Shardha Jogee TAs: Biqing For, Candace Gray, Irina Marinova Lecture 6: Tu Sep 19 Recent
More informationAST 301 Introduction to Astronomy
AST 301 Introduction to Astronomy John Lacy RLM 16.332 471-1469 lacy@astro.as.utexas.edu Myoungwon Jeon RLM 16.216 471-0445 myjeon@astro.as.utexas.edu Bohua Li RLM 16.212 471-8443 bohuali@astro.as.utexas.edu
More information7.4 Universal Gravitation
Circular Motion Velocity is a vector quantity, which means that it involves both speed (magnitude) and direction. Therefore an object traveling at a constant speed can still accelerate if the direction
More informationSummary: Mathematical Atomism (Unified Revolution: New Fundamental Physics) compared to Mainframe Physics. By Espen Gaarder Haug
Summary: Mathematical Atomism (Unified Revolution: New Fundamental Physics) compared to Mainframe Physics. By Espen Gaarder Haug Most of the book is about the first table, logic, derivations, and comparison
More informationChapter 5 Circular Motion; Gravitation
Chapter 5 Circular Motion; Gravitation Units of Chapter 5 Kinematics of Uniform Circular Motion Dynamics of Uniform Circular Motion Highway Curves, Banked and Unbanked Newton s Law of Universal Gravitation
More informationProficient. a. The gravitational field caused by a. The student is able to approximate a numerical value of the
Unit 6. Circular Motion and Gravitation Name: I have not failed. I've just found 10,000 ways that won't work.-- Thomas Edison Big Idea 1: Objects and systems have properties such as mass and charge. Systems
More informationName: Earth 110 Exploration of the Solar System Assignment 1: Celestial Motions and Forces Due on Tuesday, Jan. 19, 2016
Name: Earth 110 Exploration of the Solar System Assignment 1: Celestial Motions and Forces Due on Tuesday, Jan. 19, 2016 Why are celestial motions and forces important? They explain the world around us.
More information