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Copyright: 1996 - 2024 Webmaster:
Kirt Blattenberger,
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while typing up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
AirplanesAndRockets.com
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Physical Constants |
The list presented below
contains physical constants not specifically related to electricity or magnetism.
* : Reduced Planck
constant,
= h/2π
Visit NIST for all constants, units, and
uncertainties.
This is their
Extensive Listing of constants
Here is a table of physical units.
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· ·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/ ·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 |
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