Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
Axiom Test Equipment - RF Cafe

Amplifier Solutions Corporation (ASC) - RF Cafe

Exodus Advanced Communications Best in Class RF Amplifier SSPAs

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Rigol DHO1000 Oscilloscope - RF Cafe

Physical Constants

The list presented below contains physical constants not specifically related to electricity or magnetism.

* : Reduced Planck constant,  - RF Cafe = h/2π

Visit NIST for all constants, units, and uncertainties.

This is their Extensive Listing of constants

Here is a table of physical units.

Name Symbol Value
Alpha Particle Mass mα 6.644 656 5 x 10-27  kg
Alpha Particle Molar Mass Mα 4.001 506 179 149 x10-3  kg/mol
Atomic Mass Unit mu 1.492 417 90 x 10-10  J

1.660 538 86 x 10-27  kg

7.513 006 608 x 1014  1/m

2.252 342 718 x 1023  Hz

1.080 952 7 x 1013  K

Avogadro N0 6.022 0 x 1023  molecules/mol
Bohr Radius a0 0.529 177 2108 x 10-10  m
Boltzmann k 1.380 7 x 10-23  J/K
Deuteron Mass md 3.343 583 35 x 10-27  kg
Deuteron Molar Mass Md 2.013 553 212 70 x 10-3  kg/mol
Electron Rest Mass me 9.109 382 6 x 10-31  kg
Fine Structure α e2/4·π·ε0· - RF Cafe·c

7.297 352 568 x 10-3

Gravitational G 6.672 0 x 10-11  N·m2/kg2

3.449 0 x 10-8  lb·ft2/slug2

Fermi Coupling GF/ - RF Cafe·c 1.166 39 x 10-5  1/GeV2
Mass-Energy Ratio c2 8.987 6 x 1016  J/kg
Muon Magnetic Moment   -4.490 447 99 x 10-26  J/T
Muon Mass mμ 1.883 531 40 x x10-28  kg
Muon Molar Mass Mμ 0.113 428 9264 x 10-3  kg/mol
Planck* h 6.626 2 x 10-34  J·s
Planck Length lP 1.616 24 x 10-35  m
Planck Mass mP 2.176 45x 10-8  kg
Planck Temperature TP 1.416 79 x 1032  K
Planck Time tP 5.391 21 x 10-44  s
Proton Rest Mass mp 1.672 621 71 x 10-27  kg
Rydberg R 10 973 731.568 525  1/m

3.289 841 960 360 x 1015  Hz

2.179 872 09 x 10-15  J

13.605 6923  eV

Speed of Light (in vacuum) c 2.997 9 x 108  m/s
Stefan Boltzmann s 5.670 3 x 10-8  W/(m2·K4)
Tau Mass mτ 3.167 77 x 10-27  kg
Tau Molar Mass Mτ 1.907 68 x 10-3  kg/mol
Thomson Cross Section σe 0.665 245 873 x 10-28  m2
Unified Atomic Mass   1.660 538 86 x 10-27  kg
Universal Gas R 8.314 4  J/(mol·K)
Volume of Ideal Gas (@STP) V 2.241 4 x 10-2  m3/mol
Weak Mixing Angle θW 0.222 15  rad
Wien Displacement Law   2.897 7685 x 10-3  m·K

Rigol DHO1000 Oscilloscope - RF Cafe
Anritsu Test Equipment - RF Cafe

Werbel Microwave (power dividers, couplers)

Windfreak Technologies Frequency Synthesizers - RF Cafe