101. Physics Equipment fundamental constants, email page print page. Fundamental constants. Fundamentalconstants physics Probeware physics Software Teaching Resources http://www.pasco.com/products/cat/50.html

home store fundamental constants email page print page Fundamental Constants Fundamental Constants Physics Probeware Physics Software Teaching Resources ... "Going for the Grants" Fundamental Constants ... Probeware - ScienceWorkshop e/m Millikan Oil Drop Gravitational Constant Coulomb's Law Speed of Light Quantum Mechanics Probeware - ScienceWorkshop e/m Millikan Oil Drop Gravitational Constant ... Quantum Mechanics For more information or to contact a PASCO representative, send e-mail to Customer Support , or call 800-772-8700 (in US) or 916-786-3800. Prices and specifications subject to change without notification. Ordering Information Legal Contacts

102. Physical Constants And Conversion Factors CRC Handbook of Chemistry and physics, 58th edition (197778). PJ Mohr and BNTaylor, Any constants missing that you think should be here? http://newton.ex.ac.uk/research/qsystems/collabs/constants.html

@import '/css/ns4.css'; Skip to main content Home Research Quantum Systems ... Collabs constants.html School of Physics Top-level site links: School Teaching Admissions Research ... Quantum Systems Recommended Values of Physical Constants and Conversion Factors Please read the notes following the table. Quantity Value speed of light in a vacuum ( c 2.99792458E+08 m/s (exact) permeability of a vacuum ( 8.854187817...E-12 F/m elementary charge (of proton) 1.60217733(49)E-19 C gravitational constant 6.67259(85)E-11 Nm kg unified atomic mass constant ( m u = mass C / 12) 1.6605402(10)E-27 kg rest mass of electron ( m e 9.1093897(54)E-31 kg 5.48579903(13)E-04 amu rest mass of proton ( m p 1.6726231(10)E-27 kg 1.007276470(12) amu m e rest mass of neutron ( m n 1.6749286(10)E-27 kg 1.008664904(14) amu energy equivalence of rest mass of electron 0.5109906(15) MeV energy equivalence of rest mass of proton 938.27231(28) MeV energy equivalence of rest mass of neutron 939.56563(28) MeV electron specific charge (- e m e -1.75881962(53)E11 C/kg Planck constant 6.6260755(40)E-34 Js

103. The Fundamental Constants Of Physics, Precision Measurements And SI Base Units The fundamental constants of physics, precision measurements and SI base units.This meeting will discuss precision measurements and their increasing role http://www.lecturelist.org/content/view_lecture/1378?mail=y

104. Are The "Fundamental Constants" Of Physics, Constant? Are the Fundamental constants of physics, Constant? Why ask this question?What the heck is a Fundamental Constant? Has science addressed this question? http://www.don-lindsay-archive.org/creation/constants.html

Are the "Fundamental Constants" of Physics, Constant? Why ask this question? What the heck is a Fundamental Constant? Has science addressed this question? What about the speed of light slowing down? Last modified: 27 December 1998 Up to the physics page. Back to the Creation/Evolution page. Email a comment. Search this web site

105. Fundamental Physical Constants The NIST Reference on constants, Units, and Uncertainty Fundamental constantsC Header File, FORTRAN Data File; Conversion of units Physical constants http://www.chemie.fu-berlin.de/chemistry/general/constants_en.html

Homepage The Institute ChemNet Chemistry Information ... User Pages F UNDAMENTAL P HYSICAL C ONSTANTS Version of this page using math mode (you need a browser such as Arena PostScript Version (without warranty) Planck constant h h / (2 Boltzmann constant k B eV/K ) Elementary charge e C Avogadro number N A particles/mol Speed of light c m/s Permeability of vacuum T /J T /J Permittivity of vacuum c C Fine structure constant Electron rest mass m e kg Proton rest mass m p kg Neutron rest mass m n kg Bohr magneton B B e h / (4 m e J/T Nuclear magneton N N e h / (4 m p J/T Free electron g factor g e Free electron gyromagnetic ratio e e g e B / h e = 28.024944 GHz/T Electron magnetic moment e e g e B J/T Proton gyromagnetic ratio (H O) p p = 42.576375 MHz/T Proton magnetic moment p J/T Proton-electron ratios m p / m e e p e p = 658.2275841 (protons in water) Charge-to-mass ratio for the electron e / m e C/kg Atomic mass unit amu kg Bohr radius a m Electron radius r e m Gas constant R R N A k B 8.31451 m Molar volume V mol 22.41383 m /kmol Faraday constant F F N A e C/mol Proton g factor g H Gravitational constant G m (CODATA) m +- 0.0014 % (Jens Gundlach, Univ. of Washington; from: Der Tagesspiegel 2000-05-08)

106. Naturkonstanten The NIST Reference on constants, Units, and Uncertainty Fundamental constantsC Header File, FORTRAN Data File; Umrechnung von Einheiten http://www.chemie.fu-berlin.de/chemistry/general/constants.html

Startseite Das Institut ChemNet Fachinformationen ... Benutzerseiten N ATURKONSTANTEN Version mit "math mode" Arena PostScript Version Plancksches Wirkungsquantum h h / (2 Boltzmannsche Konstante k B eV/K ) Elementarladung e C Avogadrosche Zahl N A Teilchen/mol Lichtgeschwindigkeit c m/s T /J T /J c C Feinstrukturkonstante Elektronenruhemasse m e kg Protonenruhemasse m p kg Neutronenruhemasse m n kg Bohrsches Magneton B B e h / (4 m e J/T Kernmagneton N N e h / (4 m p J/T g-Faktor des freien Elektrons g e e e g e B / h e = 28.024944 GHz/T magnetisches Moment des Elektrons e e g e B J/T p p = 42.576375 MHz/T magnetisches Moment des Protons p J/T m p / m e e p e p = 658.2275841 (Protonen in Wasser) e / m e C/kg Einheit der Atommasse amu kg Bohrscher Radius a m Elektronenradius r e m Gaskonstante R R N A k B 8.31451 m Molvolumen V mol 22.41383 m /kmol Faradaysche Konstante F F N A e C/mol g-Faktor des Protons g H Gravitationskonstante G m (CODATA) m +- 0.0014 % (Jens Gundlach, Univ. of Washington; aus: Der Tagesspiegel 2000-05-08) m (Schwarz et al., Science Erdbeschleunigung g 9.80665 m/s c c h / (m e c) m W K ONSTANTEN atomare Energieeinheit Hartree 1 Hartree = e a J/mol (ca. 627.5 kcal/mol)

107. Physics Resources Click for a picture of the Godfather of Twentieth Century physics. FundamentalConstants from Berlin. A nifty Astrophysical Calculator from Wisconsin. http://www-personal.umich.edu/~sanders/physics/

Click for a picture of the Godfather of Twentieth Century physics. Physics Links University of Michigan Physics Department APS Home Page Physical Review Letters LBL Particle Data Group The Internet Pilot to Physics from the Institute of Physics (UK). Properties of the Elements Elements ("WebElements") Fundamental constants from NIST. Fundamental Constants from Berlin. A nifty Astrophysical Calculator from Wisconsin. Fundamental constants C Header File Fundamental constants FORTRAN Data File A small, idiosyncratic, and unsystematic Bibliography of liquid-helium-related papers. Semiclassical Mechanics of Rotons published in Contemporary Physics , 151 (2001) (a PDF file designed for screen viewing). Return to tms Home Page

108. Modern Physics:Constants:Contents - Wikibooks Modern PhysicsconstantsContents constants of Nature Properties of StableParticles Properties of Solar System Objects Miscellaneous Conversions http://en.wikibooks.org/wiki/Modern_Physics:Constants:Contents

Modern Physics:Constants:Contents From Wikibooks A Modern Physics Text Principles Chapter 1 - Waves wp Chapter 2 - Movement wp Chapter 3 - Special Relativity wp Chapter 4 - Quantum Mechanics wp Applications Chapter 5 - Gravity wp Chapter 6 - Electromagnetism wp Chapter 7 - Fluids wp Chapter 8 - Thermodynamics wp Chapter 9 - Nuclear Physics wp Appendix Chapter 10 - Constants wp edit Constants Constants of Nature Properties of Stable Particles Properties of Solar System Objects Miscellaneous Conversions Retrieved from " http://en.wikibooks.org/wiki/Modern_Physics:Constants:Contents Views Module Discussion Edit this page History Personal tools Create an account or log in Navigation Main Page Community Portal Recent changes Random module ... Donations Search Toolbox What links here Related changes Upload file Special pages ... Permanent link This page was last modified 04:22, 1 March 2004. Content is available under GNU Free Documentation License About Wikibooks

109. Physics Today March 2001 The best value of this basic constant of quantum physics is determined by awattbalance experiment that compares a watt of electrical power to a watt of http://www.physicstoday.com/pt/vol-54/iss-3/p29.html

Back to Table of Contents March Articles: Adjusting the Values of the Fundamental Constants Time Measurement at the Millennium Joseph Loschmidt, Physicist and Chemist Adjusting the Values of the Fundamental Constants Peter J. Mohr and Barry N. Taylor The best values of the fundamental constants can rarely be determined by a direct measurement. Instead, they are usually found at the end of a chain of experimental observations and theoretical relationships. In science, comparing theoretical predictions to experimental measurements often requires knowing the value of one or more of the fundamental physical constants or conversion factors, such as the electron mass or the relation between the electron volt and the joule. For these purposes, one looks up and uses the latest values of the necessary constants in a suitable table. The source of the numbers in the table is often not given much thought, however, nor is it critical in most cases. Further investigation into the source of the numbers reveals that they are determined by a broad range of experimental measurements and theoretical calculations involving many fields of physics and metrology. The best value of even a single constant is likely to be determined by an indirect chain of information based on seemingly unrelated phenomena. For example, the value of the mass of the electron in kilograms is based mainly on the combined information from experiments that involve classical mechanical and electromagnetic measurements, the highest precision optical laser spectroscopy, electrons in a trap, and condensed matter quantum phenomena, together with condensed matter theory and extensive calculations in quantum electrodynamics (QED). This particular chain of information will be examined in more detail below.

110. Online Conversions And Constants Choose a physical property for conversions and physical data/constants. We welcomesuggestions for updates and additions. You can also download the database http://www.calculator.org/properties.html

Online Conversions and Constants Home Order Download User Guide ... Online Calc Convert Suggest Calculators Books PDAs ... Contact Choose a physical property for conversions and physical data/constants. We welcome suggestions for updates and additions You can also download the database as a file for use with our calculator software acceleration acidity activation energy ... Online Calc Convert Calculators About Register Flow Simulation Ltd

111. Is The Speed Of Light Constant? The SI definition makes certain assumptions about the laws of physics. If it wasn t zero, the speed of light would not be constant; but from a http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/speed_of_light.htm

[Physics FAQ] Updated 1997 by Steve Carlip. Original by Philip Gibbs 1996. Is The Speed of Light Constant? There are a number of senses to the meaning of this question and so there are a number of different answers. Firstly . . . Does the speed of light change in air or water? Yes. Light is slowed down in transparent media such as air, water and glass. The ratio by which it is slowed is called the refractive index of the medium and is always greater than one. This was discovered by Jean Foucault in 1850. When people talk about "the speed of light" in a general context, they usually mean the speed of light in a vacuum. This quantity is also referred to as c Is c , the speed of light in vacuum, constant? At the 1983 Conference Generale des Poids et Mesures , the following SI (Systeme International) definition of the metre was adopted: The metre is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second. This defines the speed of light in vacuum to be exactly 299,792,458 m/s. This provides a very short answer to the question "Is

112. Fundamental Constants Fundamental Physical constants 3.6609376 x 1013 ft3/2lb1/2/lb-mol-s.Boltzmann Constant, k, 1.380658 x 10-23 J/K, 1.820195 x 10-22 ft-pdl/ºR http://trueforce.com/encyclopaedia/fundamental_constants.htm

T RUE F ORCE home site navigation news encyclopedia robotica ... ASCII table Fundamental Physical Constants Symbol SI System FPS System Speed of Light in a Vacuum c 2.99792458 x 10 m/s 9.83571056 x 10 ft/s Astronomical Unit A.U. 1.49597870 x 10 m 4.90806660 x 10 ft Light Year ly 9.46053621 x 10 m 3.10385045 x 10 ft Parsec pc 3.08567808 x 10 m 1.01236157 x 10 ft Gravitational Constant G 6.67259 x 10 m /kg/s 1.068846 x 10 ft /lb-s Standard Gravity g 9.80665 m/s 32.17404856 ft/s Planck Constant h 6.6260755 x 10 J/s 1.5723916 x 10 ft-pdl-s Standard Atmosphere atm 101325 Pa 6.808726 x 104 pdl/ft (14.6959 psi) Avogadro's Number N A 6.0221367 x 10 mol 2.7315953 x 10 lb/mol Atomic Mass Unit u 1.6605402 x 10 kg 3.6608649 x 10 lb Electron Volt eV 1.60217733 x 10 J 3.80202455 x 10 ft-pdl Faraday Constant F 9.6485309 x 10 C/mol 3.6609376 x 10 ft -lb /lb-mol-s Boltzmann Constant k 1.380658 x 10 J/K 1.820195 x 10 ft-pdl/ºR Ideal Gas Molar Volume at STP V m 22.41410 L/mol 359.0394 ft /lb-mol Molar Gas Constant R 8.314510 J/mol/K

113. Fundamental Physical Constants fundamental physical constant, definitions and unit of measure. http://www.themeter.net/costanti_e.htm

unit of measure conversions equivalences italiano english Conversion table choose a quantity ACCELERATION ANGLE AREA ELECTRICITY e MAGNET. ENERGY and WORK FORCE HEAT, entropy, etc. LENGTH LIGHT MASS and INERTIA MOMENT of FORCE PERMEABILITY POWER PRESSURE RADIOLOGY TEMPERATURE TIME VELOCITY and SPEED VISCOSITY,dyna., kine. VOLUME, capac. flow Conversion factors in PDF choose A B C D E F G H I J K L M N O P Q R S T V W Y ALL LIST international system of units SI prefixes fundamental physical constants SI base and derived units ... periodic table fundamental physical constant quantity symbol value unit of measure constant of gravitation G newton*m /kg Avogadro constant N A mol Faraday constant F coulomb/mole Boltzmann constant k joule/K molar gas constant R joule/mole*K speed of light in vacuum c m/s elementary charge e coulomb permittivity of vacuum e coulomb /N*m permeability of vacuum m*kg/coulomb electron mass m e kg proton mass m p kg neutron mass m n kg classical electron radius r e m Stefan-Boltzmann constant s joule/m

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

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