Cosmological Ouroboros. Sheldon Lee Glashow (Nobel prize in Physics 1979)
|
|
- Donna Hill
- 5 years ago
- Views:
Transcription
1
2 Cosmological Ouroboros Sheldon Lee Glashow (Nobel prize in Physics 1979)
3 2 Units SI base units
4 SI base units (old definition) mass length time Unite name (symbol) Old definition period kilogram (kg) meter (m) second (s) The mass of a cubic decimeter of water. The length of a pendulum having a half-period of one second. One ten-millionth of the length of the earth's meridian along a quadrant (one fourth the circumference of the earth). The distance between two lines inscribed on a highly stable platinumiridium (Pt 90 Ir 10 wt%) bar. That is to be measured at the melting point of ice. The fraction 1/ of the mean solar day. 18th century 18th century electric current ampere (A) The current that would deposit grams of silver per second from a silver nitrate solution (:International Ampere = A) thermodynamic temperature kelvin (K) The fraction 1/ of the thermodynamic temperature of the freezing point of water. ( freezing point depends on atmospheric pressure) 1967 amount of substance mole (mol) The amount of substance of a system which contains as many elementary entities as there are atoms in kilogram of oxygen. ( isotope problem: 16 O, 17 O, 18 O) - luminous intensity candela (cd) Each country had its own, and rather poorly reproducible, unit of luminous intensity. US, UK and France adopted the International Candle represented by carbon filament lamps. -
5 SI base units SI : Système International d'unités (International System of Units) Unite name (symbol) Definition established mass kilogram (kg) The mass of the International Prototype of the Kilogram (IPK). IPK is a right- circular cylinder of mm made of Pt 90 Ir 10 wt%. based on artifact length meter (m) The length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second time second (s) The duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom electric current ampere (A) The constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2x10-7 newton per meter of length 1948 thermodynamic temperature kelvin (K) The fraction 1/ of the thermodynamic temperature of the triple point of water amount of substance mole (mol) The amount of substance of a system which contains as many elementary entities as there are atoms in kilogram of carbon 12. When the mole is used, the elementary entities must be specified and may be atoms, molecules, ions, electrons, other particles, or specified groups of such particles luminous intensity candela (cd) The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540x10 12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian. 1979
6 SI derived units Derived quantity Unit name Symbol Expression in terms of other SI units Expression in terms of SI base units plane angle radian rad - m m -1 = 1 solid angle steradian sr - m 2 m-2 = 1 frequency hertz Hz - s -1 force newton N - m kg s -2 pressure pascal Pa N/m 2 m-1 kg s-2 energy, work, heat joule J N m m2 kg s-2 power, radian flux watt W J/s m2 kg s-3 electric charge, quantity of electricity coulomb C - s A electric potential difference, electromotive force volt V W/A m2 kg s-3 A-1 capacitance farad F C/V m-2 kg-1 s4 A2 electric resistance ohm Ω V/A m2 kg s-3 A-2 electric conductance siemens S A/V m-2 kg-1 s3 A2 magnetic flux weber Wb V s m2 kg s-2 A-1 magnetic flux density tesla T Wb/m 2 kg s-2 A-1 inductance henry H Wb/A m2 kg s-2 A-2 Celsius temperature degree Celsius C - K luminous flux lumen lm cd sr m 2 m-2 cd = cd illuminance lux lx lm/m 2 m 2 m-4 cd = m -2 cd activity (of a radionuclide) becquerel Bq - s -1 absorbed dose, specific energy (imparted), kerma gray Gy J/kg m2 s-2 dose equivalent sievert Sv J/kg m2 s-2 catalytic activity katal kat s -1 mol
7 SI prefix (Metric prefix) A unit prefix to indicate a decadic multiple or fraction of the basic unit of measure in the International System of Units (SI) 10 n prefix symbol yotta () Y zetta () Z exa ( ) E peta () P tera () T 10 9 giga () G 10 6 mega () M 10 3 kilo () k 10 2 hecto ( ) h 10 1 deca () da 10 n prefix symbol 10-1 deci () d 10-2 centi ( ) c 10-3 milli () m 10-6 micro () µ 10-9 nano () n pico () p femto () f atto () a zepto ( ) z yocto ( ) y
8 3 Fundamental Physical Constants
9 Fundamental Physical Constants The International Council of Scientific Unions (ICSU: established in 1931) Committee on Data for Science and Technology (CODATA: established in 1966) The CODATA Task Group on Fundamental Constants (established in 1969) Quantity Symbol Value speed of light in vacuum Newtonian constant of gravitation c m s -1 defined Relative standard uncertainty (80) m 3 kg 1 s 2 renewed in 2010, 2006, 2002, 1998, 1986, 1973, 1969 E = mc 2 magnetic constant μ 0 4π 10 7 N A 2 (= N A 2 ) defined electric constant ε 0 = 1/μ 0 c F m 1 defined Planck constant h (29) J s elementary charge e (35) C electron mass m e (40) kg proton mass m p (74) kg fine-structure constant α = μ 0 e 2 c/2h (24) 10 3 Rydberg constant R (55) m 1 Avogadro constant N A (27) x mol -1 Boltzmann constant k A (13) J K 1 Faraday constant F = N A e (21) C mol 1 gas constant R (75) J K 1 mol 1 E = hν Why h, m e, m p and N A have the same uncertainty? Why e, F, and R J have the same uncertainty? Josephson constant R J = 2e/h (11) Hz V 1 von Klitzing constant R K = h/e (84) Ω
10 International prototype kilogram (IPK) Established in 1889 at the 1st CGPM meeting (Conférence générale des poids et mesures ) Preserved at the International Bureau of Weights and Measures (BIPM: Bureau international des poids et mesures ) mass drift over time: Δm 1 μg/year G. Girard, Metrologia 31, 317 (1994) mass gain through surface adsorption of atmospheric contamination mass reduction by surface cleanings IPK from HP of BIPM right-circular cylinder (height = diameter) of mm made of Pt 90 Ir 10 (wt%) Change in mass Δm of the six official copies and of prototype No. 25 with respect to the mass of the IPK. mass drift of IPK over the last 125 years: Δm -50 μg or more providing uncertainties of 5x10-8 on SI units
11 Future replacement of IPK (Avogadro constant route) Idea: Relates the kilogram to the mass of an atom by quantifying the kilogram as the mass of a certain number of atoms of a selected element. cf. necessary accuracy (δw/w < ) δw < 100 ng in w = 5 g IPK Problem: It will take seven millennia to tally enough 12 C atoms even if one can tally individual atoms at a rate of 1 THz (10 12 Hz). mass of a certain number of atoms Solution I: 1. Measure the volume occupied by an atom by determining the regular spacing of atoms (a) within a nearly perfect crystal of known weight ( 1 kg). a = (89) x m (X-ray difraction) 2. Determine the dimensions of the crystal to find the total volume and then calculate the mass of an atom in the sample. will fix the value of the Avogadro constant. IPK in future? (perfectly spherical single crystal of 28 Si, from PTB)
12 International Avogadro Coordination (IAC) I. Boninson, Scientific American Dec. 2006, p.102 d = 93.6 mm δd 50 nm deviations from sphericity A consortium of laboratories in Australia, Belgium, Germany, Italy, Japan, the U.K. and the U.S. Avogadro number can be determined by N A = 8m/ρa 3 within in 2011, N A = (18) x mol -1 ρ : density of the sphere made of enriched (4N) 28 Si a : length of a side of the unit cell of Si m : average molar mass of Si
13 Nobel prize in Physics 1985 New Method fro High-Accuracy Determination of the Fine- Structure Constant Based on Quantized Hall Resistance K. v. Klitzing, G. Dorda and M. Pepper, Phys. Rev. Lett. 45, 494 (1980) Klaus von Klitzing M. Paalanen et al., PRB 25, 5566 (1982)
14 Nobel prize in Physics 1973 "for his theoretical predictions of the properties of a supercurrent through a tunnel barrier, in particular those phenomena which are generally known as the Josephson effects" B.D. Josephson, Phys. Lett. 1, 251 (1962) Brian David Josephson S I S ψ 1 ψ 2 P.W. Anderson and J. M. Rowell, Phys. Rev. Lett. 10, 230 (1963) 2 nm V J = nν ( 2e h) K J 2e/h = GHz/V
SI base units. SI : Système International d'unités (International System of Units)
2 Units SI base units SI : Système International d'unités (International System of Units) Unite name (symbol) Definition established mass kilogram (kg) The mass of the International Prototype of the Kilogram
More informationSI units are divided into 2 classes: base units (7) and derived units. Athens Programme Course CTU 1 - Metrology of Electrical Quantities.
Athens Programme Course CTU 1 - Metrology of Electrical Quantities The 11th CGPM (1960) adopted the name Système International d'unités (International System of Units, abbreviation SI), for the recommended
More informationSI UNITS AND SOME CONVERSION FACTORS. A. Woldai, B. Makkawi, and D. Al-Gobaisi International Center for Water and Energy Systems, Abu Dhabi, UAE
SI UNITS AND SOME CONVERSION FACTORS A. Woldai, B. Makkawi, and D. Al-Gobaisi International Center for Water and Energy Systems, Abu Dhabi, UAE Keywords : SI units, Dynamic viscosity, Surface tension,
More informationThe SI Metric System LE SYSTÈME INTERNATIONAL D'UNITÉS ( I N T ERNATI ONA L SYST E M O F U N I T S)
The SI Metric System LE SYSTÈME INTERNATIONAL D'UNITÉS (INTERNATIONAL SYSTEM OF UNITS) Metric System Created standard system of measurement Decimal system (base of 10) Uses decimal-based prefixes to denote
More informationStandard physical units
Standard physical units SI base units (SI = Système International d Unités) Basic quantity SI base unit Name Symbol Length metre m Mass kilogram kg Time second s Electric current ampere A Temperature (thermodynamic
More informationS I. A concise summary of the International System of Units, SI
Concise summary of the SI 1 S I A concise summary of the International System of Units, SI Metrology is the science of measurement and its application. Metrology includes all theoretical and practical
More informationGHANA CIVIL AVIATION (AIR NAVIGATION SERVICES) DIRECTIVES PART 22 - UNITS OF MEASUREMENTS TO BE USED IN AIR AND GROUND OPERATIONS
GHANA CIVIL AVIATION (AIR NAVIGATION SERVICES) DIRECTIVES PART 22 - UNITS OF MEASUREMENTS TO BE USED IN AIR AND GROUND OPERATIONS INTENTIONALLY LEFT BLANK 22-2 Introduction Part 22 is about units of measurement
More informationAPPENDIX D UNIT CONVERSION TABLES. Sl SYMBOLS AND PREFIXES
UNIT CONVERSION TABLES Sl SYMBOLS AND PREFIXES BASE UNITS Quantity Unit Symbol Length Meter m Mass Kilogram kg Time Second s Electric current Ampere A Thermodynamic temperature Kelvin K Amount of substance
More informationUNIT & DIMENSIONS AND MEASUREMENT STRAIGHT LINES
UNIT & DIMENSIONS AND MEASUREMENT STRAIGHT LINES PHYSICAL QUANTITIES The quantities which can be measured by an instrument and by means of which we can describe the laws of physics are called physical
More informationREAD ONLY. Adopting Agency BSC SFM. Adopt Entire Chapter X X X X X X X X X Adopt Entire Chapter as amended (amended sections listed below)
CALIFORNIA MECHANICAL CODE MATRIX ADOPTION TABLE APPENDIX D UNIT CONVERSION TABLES (Matrix Adoption Tables are non-regulatory, intended only as an aid to the user. See Chapter 1 for state agency authority
More informationRepresentation of SI Units and Prefixes
CANopen Representation of SI Units and Prefixes CiA Draft Recommendation DRP-303-2 Version 1.1 Date: 19. January 2000 CAN in Automation (CiA) 1 1 Scope This document recommends the representation of the
More information10. The State 11. FIRST SCHEDULE SECOND SCHEDULE THIRD SCHEDULE FOURTH SCHEDULE FIFTH SCHEDULE SIXTH SCHEDULE
INTERNATIONAL SYSTEM OF UNITS (SI) ACT Act 6 of 1984 1 July 1984 ARRANGEMENT OF SECTIONS SECTION 1. Short title 2. Interpretation 3. Units to be used 4. Multiples and sub-multiples 5. Symbols and prefixes
More informationExact and Measured Numbers
EIE 240 Electrical and Electronic Measurement December 8, 2011 Werapon Chiracharit 1 Exact and Measured Numbers Exact numbers e.g. Ih have exactly 10 fingers and 10 toes. Any measurements e.g. a pen s
More informationState Legislation, Regulation or Document Reference CAR Civil Aviation Rule (CAR) Annex 5 is incorporated by reference in this rule.
Annex INTERNATIONAL STANDARDS AND RECOMMENDED PRACTICES CHAPTER 1. DEFINITIONS When the following terms are used in the Standards and Recommended Practices concerning the units of measurement to be used
More informationThe SI (mks) Unit System
267 E The SI (mks) Unit System The magnitude of the physical quantity is expressed in comparison with a certain unit of the size of the standard. The physical quantity appearing in mechanics and dynamics
More informationPHYSICS 1 (LIFE SCIENCES) ELECTRICITY
THE UNIVERSITY OF SYDNEY PHYSICS 1 (LIFE SCIENCES) ELECTRICITY ELEVENTH EDITION SI stands for Système International SI UNITS SI base units Quantity Unit Symbol Mass kilogram kg Distance metre m Time second
More informationIngvar Lindgren Symposium: New Trends in Atomic Physics II 2 3 June 2006 The Quantum SI: A possible new International System of Units
Ingvar Lindgren Symposium: New Trends in Atomic Physics II 2 3 June 2006 The Quantum SI: A possible new International System of Units Peter Mohr National Institute of Standards and Technology Gaithersburg,
More informationGeneral Physics. Prefixes. Aims: The Greek Alphabet Units. Provided Data
General Physics Aims: The Greek Alphabet Units Prefixes Provided Data Name Upper Case Lower Case The Greek Alphabet When writing equations and defining terms, letters from the Greek alphabet are often
More informationThe Kilogram Redefined:
The Kilogram Redefined: SI Units and Fundamental Constants Alan Steele, NRC Canada IPAC 18 Vancouver May 2, 2018 The Metre Convention: May 20, 1875 International Treaty that creates the BIPM and launches
More informationUnits of Measurements to be used in air and ground operations.
GOVERNMENT OF INDIA OFFICE OF DIRECTOR GENERAL OF CIVIL AVIATION TECHNICAL CENTRE, OPP SAFDARJANG AIRPORT, NEW DELHI CIVIL AVIATION REQUIREMENTS SECTION 1- GENERAL SERIES 'B', PART I 19 th SEPTEMBER, 2005
More informationRead Sections 1.10 and Appendix A-1 before viewing this slide show.
Read Sections 1.10 and Appendix A-1 before viewing this slide show. Unit 4 Measurement Basic Units The International System of Units (SI) (1.10) Current definitions of the seven base SI units Review of
More informationThe Metric System. The International System of Units
The Metric System The International System of Units Origin of the Metric System Idea of standardized system of measurement based on the decimal was first proposed as early as ~1670. The first practical
More information16 19 Study Guide. Pocket physics. a handy guide for bright stars
6 9 Study Guide Pocket physics a handy guide for bright stars Miscellaneous Ideal gases Pressure (P) pascal (Pa) : Pa = newton per square metre. P = 3 t c where ρ is the density of the gas and _ c² _ is
More information16 19 Study Guide. Pocket physics. a handy guide for bright stars
6 9 Study Guide Pocket physics a handy guide for bright stars Miscellaneous Ideal gases Pressure (P) pascal (Pa) : Pa = newton per square metre. P = 3 t c where ρ is the density of the gas and _ c² _ is
More informationDimensional Analysis
Ch01 Dimensional Analysis Measurements include both a value and unit of measurement. Dimensional Analysis is the process we ll use to manage units in our calculations. version 1.5 Nick DeMello, PhD. 2007-2014
More informationLecture notes on * Measurement and Error * Least Square Fitting
Lecture notes on * Measurement and Error * Least Square Fitting Department of Optical Engineering University of Gaziantep Oct 2016 Sayfa 1 PART I Measurement and Error Sayfa 2 System of Units Physics is
More informationGoodbye, Mr. kilogram!
Goodbye, Mr. kilogram! Amol Dighe Department of Theoretical Physics Tata Institute of Fundamental Research Chai-and-Why, Prithvi Theatre, Oct 1, 2017 Goodbye, Mr. kilogram! 1 Why? 2 How? 3 Why now? 4 What
More informationPHYSICS. Complete Study Material and 1000 Objective bits Useful for all SSC, RRB & Group Exams METRE
PHYSICS Complete Study Material and 1000 Objective bits Useful for all SSC, RRB & Group Exams PHYSICAL QUANTITIES The quantities like length, mass, time, temperature, area, volume and density, etc. which
More informationThis document is meant purely as a documentation tool and the institutions do not assume any liability for its contents
1980L0181 EN 27.05.2009 004.001 1 This document is meant purely as a documentation tool and the institutions do not assume any liability for its contents B COUNCIL DIRECTIVE of 20 December 1979 on the
More informationThe General Conference on Weights and Measures (CGPM), at its 24th meeting,
On the possible future revision of the International System of Units, the SI Resolution 1 The General Conference on Weights and Measures (CGPM), at its 24th meeting, considering the international consensus
More informationLECTURE 4 - Units Used in Measurements
LECTURE 4 - Units Used in Measurements Note: Slide numbers refer to the PowerPoint presentation which accompanies the lecture. Units, slide 1 here Introduction Geochemical measurements may be expressed
More informationExplicit-unit formulations of proposed redefinitions of SI base units
Explicit-unit formulations of proposed redefinitions of SI base units B. P. Leonard The University of Akron, Akron, Ohio, USA 1849 Brookfield Drive, Akron, OH 44313, USA phone: (330) 867-7152 e-mail: bpleona@uakron.edu
More informationT m / A. Table C2 Submicroscopic Masses [2] Symbol Meaning Best Value Approximate Value
APPENDIX C USEFUL INFORMATION 1247 C USEFUL INFORMATION This appendix is broken into several tables. Table C1, Important Constants Table C2, Submicroscopic Masses Table C3, Solar System Data Table C4,
More information1.1 - Scientific Theory
1.1 - Scientific Theory Babylonians/Egyptians Observation for the practical Religious Agriculture Pseudosciences (science + nonscience) Alchemy Astrology, etc. Greeks Good Theoreticians (knowledge for
More informationChapter 6 Dimensions and Units
Chapter 6 Dimensions and Units Length The standard unit of length in the metric system is the meter. Other units of length and their equivalents in meters are as follows: 1 millimeter = 0.001 meter 1 centimeter
More informationTY Physics Measurement Module 1
TY Physics Measurement Module 1 Introduction Units of measure were among the earliest tools invented by humans, they were needed for many tasks, such as constructing dwellings, fashioning clothes, or bartering
More informationMYANMAR CIVIL AVIATION REQUIREMENTS
THE REPUBLIC OF THE UNION OF MYANMAR MINISTRY OF TRANSPORT AND COMMUNICATIONS DEPARTMENT OF CIVIL AVIATION MYANMAR CIVIL AVIATION REQUIREMENTS Part 5 : Air Navigation Services Section 5 Units of Measurement
More informationNAME SYMBOL QUANTITY
CONDENSED GUIDE TO SI UNITS AND ASSOCIATED TYPOGRAPHICAL STANDARDS This condensed guide to SI units and their standard usage is provided for the benefit of those who use units of measure. This document
More informationTable of Information and Equation Tables for AP Physics Exams
Table of Information and Equation Tables for AP Physics Exams The accompanying Table of Information and Equation Tables will be provided to students when they take the AP Physics Exams. Therefore, students
More informationSubpart B Standard Application of Units of Measurement. Subpart- C Presentation Of Date And Time In All-Numeric Form
Section No. Contents Subject Subpart- A General 5.1 Applicability. 5.3 Definitions and terms 5.5-5.9 Reserved Subpart B Standard Application of Units of Measurement 5.11 SI Units 5.13 Non-SI units 5.15
More informationAdvanced Metric Flashcards
Advanced Metric Flashcards Revision 5.2 1. The lower-left corner of each card indicates dual or question/answer : a. Dual sided: both sides pose a question answered by the other side. When using for study,
More informationPHY Tables & Formulas. You may refer to this handout on quizzes & exams. Do not add additional information. m
PHY 132 - Tables & Formulas You may refer to this handout on quizzes & exams. Do not add additional information. m Things you should know from PHY 131 and other prerequisites. (If you don t, learn them
More informationN5 H AH Physical Quantity Symbol Unit Unit Abbrev. 5 absorbed dose D gray Gy
5 absorbed dose D gray Gy 5 absorbed dose rate D gray per second gray per hour gray per year Gys -1 Gyh -1 Gyy -1 5 6 7 acceleration a metre per second per second m s -2 5 6 7 acceleration due to gravity
More informationUS Customary System (USC) Systeme Internationale (SI) Prefixes. Units & Significant Figures
Units & Significant Figures US Customary System (USC) What is the length of this line? Based on things that made sense to people Previously known as English (or British) 1 inch = 3 dry, round, barleycorns
More informationChapter 1: The Science of Physics. Physics 1-2 Mr. Chumbley
Chapter 1: The Science of Physics Physics 1-2 Mr. Chumbley The Topics of Physics The origin of the word physics comes from the ancient Greek word phusika meaning natural things The types of fields of
More informationIl nuovo Sistema Internazionale (SI) Le unità elettromagnetiche
Il nuovo Sistema Internazionale (SI) Le unità elettromagnetiche Luca Callegaro Istituto Nazionale di Ricerca Metrologica Torino, Italy 4 Maggio 2017 Luca Callegaro (INRIM) Nuovo SI 4 Maggio 2017 1 / 27
More informationTute UV1 : MEASUREMENT 1
Tute UV1 : MEASUREMENT 1 We measure physical quantities. To achieve this we firstly define the quantity, then secondly we define units in terms of which that quantity can be measured. Definition of a Quantity:
More informationUNITS AND DEFINITIONS RELATED TO BIOMECHANICAL AND ELECTROMYOGRAPHICAL MEASUREMENTS
APPENDIX B UNITS AND DEFINITIONS RELATED TO BIOMECHANICAL AND ELECTROMYOGRAPHICAL MEASUREMENTS All units used are SI (Système International d Unités). The system is based on seven well-defined base units
More informationWhat is Physics? It is a Science
It is a Science What is Physics? (What is science?) Physics is a physical science (as compared to earth or life science). Physics is the study of motion and energy. Science is a study Science How is science
More informationElectrical and Electronic Measurements
1 Electrical and Electronic Measurements WEEK 1 Introduction WEEK 2-4 Measurements / Analysis / Errors WEEK 5 Indicating instruments WEEK 6-7 Component measurements WEEK 8 Midterm exam WEEK 9-10 Digital
More informationUS Customary System (USC)
What is the length of this line? US Customary System (USC) Based on things that made sense to people Previously known as English (or British) inch = 3 dry, round, barleycorns end-to-end foot = length of
More informationMise en pratique for the definition of the ampere and other electric units in the SI
Mise en pratique for the definition of the ampere and other electric units in the SI Consultative Committee for Electricity and Magnetism 1. Introduction The purpose of this Mise en pratique, prepared
More informationText book. Tenth edition. Walker, Halliday and Resnick. Principles of physics.
Text book Principles of physics. Tenth edition Walker, Halliday and Resnick Chapter 1 Measurement In this chapter we will explore the following concepts: 1. Measurement of a physical parameter 2. Units,
More information8/17/2016. Summary. Summary. Summary. Chapter 1 Quantities and Units. Passive Components. SI Fundamental Units. Some Important Electrical Units
Passive Components Chapter 1 Quantities and Units Welcome to the Principles of Electric Circuits. You will study important ideas that are used in electronics. You may already be familiar with a few of
More informationLe système SI et son évolution; le rôle de la seconde dans le future SI Terry Quinn
Le système SI et son évolution; le rôle de la seconde dans le future SI Terry Quinn Directeur honoraire du Bureau International des Poids et Mesures (BIPM) TJQ and Jean Kovalevsky at the French Archives
More information1 Fundamental Constants, Elements, Units
1 Fundamental Constants, Elements, Units 1.1 Fundamental Physical Constants Table 1.1. Fundamental Physical Constants Electron mass m e = 9.10939 10 28 g Proton mass m p = 1.67262 10 24 g Atomic unit of
More informationA P P E N D I X C Units and Dimensions 795
A P P E N D I X C Units and Dimensions In 1960, the International System of Units was given official status at the Eleventh General Conference on Weights and Measures held in Paris. This system of units
More informationTHE INTERNATIONAL SYSTEM OF UNITS (SI) SI Base Units. Quantity Name of unit Symbol
Appendix THE INTERNATIONAL SYSTEM OF UNITS (SI) Table 1 SI Base Units Qantity Name of nit Symbol Lengt meter m Mass kilogram kg Time second s Electric crrent ampere A Termodynamic temperatre kelvin K Lminos
More information2. Basic Components and Electrical Circuits
1 2. Basic Components and Electrical Circuits 2.1 Units and Scales The International System of Units (SI) defines 6 principal units from which the units of all other physical quantities can be derived
More informationOPAC 101 Introduction to Optics
OPAC 101 Introduction to Optics Topic 3 Introductory Photometry Department of http://www1.gantep.edu.tr/~bingul/opac101 Optical & Acustical Engineering Gaziantep University Sep 017 Sayfa 1 Introduction
More informationLecture 2: Introduction to Measurement and Units
Physical Principles in Biology Biology 3550 Fall 2018 Lecture 2: Introduction to Measurement and Units Wednesday, 22 August 2018 c David P. Goldenberg University of Utah goldenberg@biology.utah.edu Clicker
More informationUnit 1. ET Unit 1. Quantities, Units, and Electrical Safety. Electronics Fundamentals Circuits, Devices and Applications - Floyd
ET 115 - Unit 1 Quantities, Units, and Electrical Safety Scientific and Engineering Notation Very large and very small numbers are represented with scientific and engineering notation. 47,000,000 = 4.7
More informationThe SI System: FRRB Guide to Scientific Units
FRRB SI Units 1 of 8 The SI System: FRRB Guide to Scientific Units Garry R. Buettner, Ph.D. and Freya Q. Schafer, Ph.D Free Radical and Radiation Biology Program EMRB 68 The University of Iowa Iowa City,
More informationPY1007: Physics for Engineers I
PY1007: Physics for Engineers I LECTURES: TUESDAY 12-13 Kane Building G1 THURSDAY 13-14 Lecturers Dr. Richard Green (me!) r.green@ucc.ie 1 st Floor, Kane (Science) Building Dr. Síle Nic Chormaic (Module
More informationDEVIL PHYSICS THE BADDEST CLASS ON CAMPUS IB PHYSICS
DEVIL PHYSICS THE BADDEST CLASS ON CAMPUS IB PHYSICS TSOKOS LESSON 1-1 THE REALM OF PHYSICS Questions from Reading Activity? Answers Essential Idea Since 1948, the Système International d Unités (SI) has
More informationChapter 1. Chapter 1
Chapter 1 Scientific and Engineering Notation Very large and very small numbers are represented with scientific and engineering notation. 47,000,000 = 4.7 x 10 7 (Scientific Notation) = 47 x 10 6 (Engineering
More informationGeneral and Inorganic Chemistry I.
General and Inorganic Chemistry I. Lecture 1 István Szalai Eötvös University István Szalai (Eötvös University) Lecture 1 1 / 21 Outline 1 Introduction 2 3 Foundations of Chemistry István Szalai (Eötvös
More informationModule 1: Units and Significant Figures
1.1 The Speed of Light Module 1: Units and Significant Figures When we observe and measure phenomena in the world, we try to assign numbers to the physical quantities with as much accuracy as we can possibly
More informationRevising the International System (SI) of Units of Measurement. Dr Barry IngIis President, International Committee for Weights and Measures
Revising the International System (SI) of Units of Measurement Dr Barry IngIis President, International Committee for Weights and Measures Symposium on International Trend of Metrology Metrology for Industrial
More informationDimensions and Units. 1.1 The International System of Units
Dimensions and Units 1 The laws of physics are expressed in terms of basic quantities that require a clear definition for the purpose of measurements. Among these measured quantities are length, time,
More informationINDUSTRIAL ELECTRICITY
INDUSTRIAL ELECTRICITY TODAY S TOPICS: Introduction (cont) Scientific Notation DUE Mon 1/13 11:00am HOMEWORK 1 Reading quizzes 1 & 2 Worksheet 1 QUESTIONS?? Scantron Use for reading quizzes only Don t
More informationECET 211 Electric Machines & Controls
ECET 211 Electric Machines & Controls Spring 2013 Lecture 2 January 17, 2013 Paul I. Lin, Professor of Electrical and Computer Engineering Technology Indiana University Purdue University Fort Wayne Introduction
More informationMatter and Laws of Chemical Combinations
1 Matter and Laws of Chemical Combinations General Introduction: Importance and Scope of Chemistry Chemistry is the branch of science which deals with the study of composition, properties and interaction
More informationInspec numerical data indexing on EBSCOhost
Inspec numerical data indexing on EBSCOhost Inspec Numerical Data Indexing on Ebsco Inspec Numerical Data Indexing on Ebsco...1 Numerical Data Indexing Thesaurus...1 1.0 Thesaurus Entries...2 1.1 Preferred
More informationLesson 1.1 MEASUREMENT, UNITS, SCIENTIFIC NOTATION, AND PRECISION
Lesson 1.1 MEASUREMENT, UNITS, SCIENTIFIC NOTATION, AND PRECISION I. Measurements Measurements can be either Qualitative or Quantitative Qualitiative Quality, like a color or smell, are simple observations
More informationWho am I? CHEM 110 General Chemistry King Abdul Aziz University Jeddah KSA. How to reach me?
CHEM 110 General Chemistry King Abdul Aziz University Jeddah KSA Who am I? Dr. Mohamed Abdel Salam Assistant Professor of Physical Chemistry PhD in Nano Chemistry, Canada (006) M Sc in Electrochemistry,
More informationDEVIL PHYSICS THE BADDEST CLASS ON CAMPUS IB PHYSICS
DEVIL PHYSICS THE BADDEST CLASS ON CAMPUS IB PHYSICS TSOKOS LESSON 1-1 MEASUREMENTS IN PHYSICS Questions from Reading Activity? Essential Idea Since 1948, the Système International d Unités (SI) has been
More informationPhys 2401: Lecture 1 Chapt. 1: Measurement
Phys 2401: Lecture 1 Chapt. 1: Measurement Martha Casquete Physics and Geology Department Agenda Units Conversion of Units Dimensional analysis Question/Observation of the Week Quizz Introduction Brief
More informationWorksheet 2 Units, Signifiant Figures, Dimensional Analysis, & Density
Name: Name: Name: Name: Worksheet 2 Units, Signifiant Figures, Dimensional Analysis, & Density Objeitives To recognize and use both S.I. and English units correctly. To be able to record a measurement
More informationDefining Physical Science
Defining Physical Science Defining Physical Science: Physical Science: The study of matter and energy A merging of two major braches of Science: 1. Chemistry: Study of the composition and changes of matter
More informationMeasurement and Units. An Introduction to Chemistry By Mark Bishop
Measurement and Units An Introduction to Chemistry By Mark Bishop Values from Measurements A value is a quantitative description that includes both a unit and a number. For 100 meters, the meter is a unit
More informationMATHEMATICAL PRELIMINARIES
CHAPTER 1 MATHEMATICAL PRELIMINARIES Treatment of electrokinetic transport phenomena requires understanding of fluid mechanics, colloidal phenomena, and the interaction of charged particles, surfaces,
More informationPrecision, Accuracy Measurements, Units, Scientific Notation
Precision, Accuracy Measurements, Units, Scientific Notation DIMENSIONAL ANALYSIS It is a technique used in chemistry to give precise and accurate values. I. Accuracy and Precision Accuracy how close a
More informationUnits of Measurement. Key Terms quantity derived unit conversion factor SI volume dimensional analysis
Units of Measurement Key Terms quantity derived unit conversion factor SI volume dimensional analysis weight density Measurements are quantitative information. A measurement is more than just a number,
More informationINC 331 Industrial Process Measurement. Instrument Characteristics
INC 331 Industrial Process Measurement Instrument Characteristics Introduction Measurement is the experimental process of acquiring any quantitative information. When doing a measurement, we compare the
More informationCh. 2 Notes: ANALYZING DATA MEASUREMENT NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics.
Ch. 2 Notes: ANALYZING DATA MEASUREMENT NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics. I. Units and Measurement - Metrics A. The International System of Units
More informationObjective -> Students will: 1. identify SI units that we will use for various measurements. 2. perform calculations involving SI prefixes.
Objective -> Students will:. identify SI units that we will use for various measurements. 2. perform calculations involving SI prefixes. Warm-up: Use the english system of units (the same ones we use in
More information288 MODERN SEWER DESIGN. Versatility of steel in sewer construction is typified by application of large diameter structural plate pipe.
288 MODERN SEWER DESIGN Versatility of steel in sewer construction is typified by application of large diameter structural plate pipe. CONVERSION TABLES 289 Conversion Tables INTRODUCTION - SYSTÈME INTERNATIONAL
More informationThe origins and history of the International System of Units, SI. Terry Quinn
The origins and history of the International System of Units, SI Terry Quinn The 24 th CGPM, Considering The 24 th General Conference on Weights and Measures (CGPM) * Resolution 1 On the possible future
More informationUnit WorkBook 1 Level 4 ENG U3 Engineering Science 2018 Unicourse Ltd. All Rights Reserved. Sample
Pearson BTEC Levels 4 and 5 Higher Nationals in Engineering (RQF) Unit 3: Engineering Science (core) Unit Workbook 1 in a series of 4 for this unit Learning Outcome 1 Scientific Data Page 1 of 10 1.1 International
More informationGCE Physics Transition Work
GCE Physics Transition Work Mr Spafford: Mathematics and Waves Name: NB: Thanks go to the other physics teachers over the years, from whose work this booklet has been compiled. Unfortunately, the source
More informationRELEVANT DEFINITIONS
Chapter 1 The Basic Parameters and Laws of Physics & Chemistry The basic parameters or measurements of the physical sciences [including all of the most common and widely used units that apply to each]
More informationJames Chickos Room B435. Introductory Chemistry 1111
James Chickos Room B435 Introductory Chemistry 1111 What is Chemistry? Chemistry is the study of substances in terms of Composition of Matter What a material it made of Structure of Matter How the elementary
More informationWorksheet 1 Units, Signifiant Figures, Dimensional Analysis, & Density
Name: Name: Name: Name: Worksheet 1 Units, Signifiant Figures, Dimensional Analysis, & Density Objeitives To recognize and use both S.I. and English units correctly. To be able to record a measurement
More informationA new definition of the SI for the new century
A new definition of the SI for the new century to celebrate the PTB s first 3 42 1 years = 1111101 years Presentation from Ian Mills, President of the CCU We have known for more than 50 years that the
More informationMeasurement and Sig Figs Review
Name: Class: Date: Measurement and Sig Figs Review Matching Match each item with the correct statement below. a. absolute zero e. mass b. Kelvin temperature scale f. significant figure c. Celsius temperature
More informationAdditional Formula Sheet for Final Exam
Additional Formula Sheet for Final Exam eading and thoroughly familiarizing yourself with this formula sheet is an important part of, but it is not a substitute for, proper exam preparation. The latter
More informationScientific Measurement
A measurement is a quantity that has both a number and a unit Some numbers encountered in science can be either very large or very small We use scientific notation to make those numbers easier to work
More informationFacts themselves are meaningless. It's only the interpretation we give those facts which counts. - Earl Stanley Gardner
Chapter 1 General data Facts themselves are meaningless. It's only the interpretation we give those facts which counts. - Earl Stanley Gardner International system of units (SI) 2 Fundamental physical
More information1.2.3 Atomic constants
1 of 5 18/12/2011 23:36 Home About Table of Contents Advanced Search Copyright Feedback Privacy You are here: Chapter: 1 Units and fundamental constants Section: 1.2 Fundamental physical constants SubSection:
More information