Here are gathered some tables of physical constants, frequency bands, ... in short! useful data in Wireless Telegraphy.
Non-SI Unit SI Unit
abampere 10.0* A
abcoulomb 10.0* C
abfarad 1.0* x 109F
abhenry 1.0* x 10-9H
abmho 1.0* x 109S
abohm 1.0* x 10-9Ω
abvolt 10.0* x 10-9V
acre 4.046856 x 103m2
amagat (at stp) 44.614774 mol m-3
ampere hour 3.6* x 103C
ângström 100.0* x 10-12m
apostilb 1.0* 1mm-2
arcminute 290.888 2 x 10-6rad
arcsecond 4.848 137 x 10-6rad
are 100.0* 2m
astronomical unit 149.5979 x 109m
atmosphere (standard) 101.3250* x 103Pa
atomic mass unit 1.660540 x 10-27kg
bar 100.0* x 103Pa
barn 100.0* x 10-30m2
baromil (US) 750.1 x 10-6m
barrel (UK) 163.6592 x 10-3m3
barrel (US dry) 115.6271 x 10-3m3
barrel (US oil) 158.9873 x 10-3m3
barrel (US liquid) 119.2405 x 10-3m3
baud 1.0* s-1
bayre 100.0* x 10-3Pa
biot 10.0 A
bolt (US) 36.576* m
brewster 1.0* x 10-12m2N-1
British thermal unit 1.055056 x 103J
bushel (UK) 36.36 872 x 10-3m3
bushel (US) 35.23907 x 10-3m3
Non-SI Unit SI Unit
butt (UK) 477.3394 x 10-3m3
cable (US) 219.456* m
calorie 4.1868* J
candle power (spherical) 4π lm
metric carat 200.0* x 10-6kg
cental 45.359237 kg
centare 1.0* m2
centimeter of Hg(0°C) 1.333222 x 103Pa
centimeter of H2O (4°C) 98.060616 Pa
chain (engineers') 30.48* m
chain (US) 20.1168* m
Chu 1.899 101 x 103J
clusec 1.333224 x 10-6W
cord 3.624556 m 3
cubit 457.2* x 10-3m
cumec 1.0* m3 s -1
cup (US) 236.5882 x 10-6m3
curie 37.0* x 109Bq
darcy 986.9233 x 10-15m2
day 86.4* x 103s
day (sidereal) 86.16409 x 103s
debye 3.335641 x 10-30C m
degree (angle) 17.45329 x 10-3rad
denier 111.1111 x 10-9kgm-1
digit 19.05* x 10-3m
dioptre 1.0* m-1
Dobson unit 10.0* x 10-6m
dram (avoirdupois) 1.771 845 x 10-3kg
dyne 10.0* x 10-6N
dyne centimetres 100.0* x 10-9J
electron volt 160.2177 x 10-21J
ell 1.143* m
Non-SI Unit SI Unit
em 4.233 333 x 10-3m
emu of capacitance 1.0* x 109F
emu of current 10.0* A
emu of electric potential 10.0* x 10-9V
emu of inductance 1.0* x 10-9H
emu of resistance 1.0* x 10-9Ω
Eötvös unit 1.0* x 10-9ms-2m-1
esu of capacitance 1.112650 x 10-12F
esu of current 333.5641 x 10-12A
esu of electric potential 299.7925 V
esu of inductance 898.7552 x 109H
esu of resistance 898.7552 x 109Ω
erg 100.0* x 10-9J
faraday 96.4853 x 103C
fathom 1.828 804 m
fermi 1.0* x 10-15m
Finsen unit 10.0* x 10-6W m-2
firkin (UK) 40.91481 x 103m3
firkin (US) 34.068 71 x 10-3m3
fluid ounce (UK) 28.41308 x 10-6m3
fluid ounce (US) 29.573 53 x 10-6m3
foot 304.8* x 10-3m
foot (US survey) 304.8006 x 10-3m
foot of water (4°C) 2.988 887 x 103Pa
footcandle 10.76391 lx
footlambert 3.426259 cdm-2
footpoundal 42.14011 x 10-3J
footpounds (force) 1.355818 J
fresnel 1.0* x 1012Hz
funal 1.0* x 103N
furlong 201.168* m
g (standard acceleration) 9.80665* m s-2
gal 10.0* x 10-3ms-2
Non-SI Unit SI Unit
gallon (UK) 4.54609* x 10-3m3
gallon (US liquid) 3.785412 x 10-3m3
gamma 1.0* x 10-9T
gauss 100.0* x 10-6T
gilbert 795.7747 x 10-3 Aturn
gill (uk) 142.0654 x 10_6m3
gill (US) 118.2941 x 10_6m3
gon 7t/200* rad
grade 15.70796 x 10-3rad
grain 64.798 91* x 10-6kg
gramme 1.0* x 10-3kg
gram-rad 100.0* Jkg-1
gray 1.0* Jkg-1
hand 101.6* x 10-3m
hartree 4.359748 x 10-18J
hectare 10.0* x 103m2
hefner 902 x 10-3cd
hogshead 238.6697 x 10-3m3
horsepower (boiler) 9.809 50 x 103W
horsepower (cheval-vapeur électrique) 746* W
horsepower (cheval-vapeur metrique) 735.498 8 W
horsepower (UK) 745.6999 W
heure 3.6* x 103s
heure (siderale) 3.590170 x 103s
hundredweight (UK long) 50.80235 kg
hundredweight (US short) 45.35924 kg
inch 25.4* x 10-3m
inch of mercury (0°C) 3.386389 x 103Pa
inch of water (4°C) 249.0740 Pa
jansky 10.0* x 10-27W m2Hz-1
jar 10/9* x 10-9F
kayser 100.0* m-1
kilocalorie 4.1868* x 103J
Non-SI Unit SI Unit
kilogramme-force 9.80665* N
kilowatt hour 3.6* x 106J
knot (international knot) 514.4444 x 10-3ms-1
lambert 10/71* x 103cdm-2
langley 41.84* x 103Jm-2
langmuir 133.3224 x 106 Pas
league (nautical, int.) 5.556* x 103m
league (nautical, UK) 5.559 552 x 103m
league (statute) 4.828032 x 103m
light year 9.46073* x 1015m
ligne 2.256* x 10-3m
line 2.116667 x 10-3m
line (magnetic flux) 10.0* x 10-9Wb
link (engineers') 304.8* x 10-3m
link (US) 201.1680 x 10-3m
litre 1.0* x 10-3m3
lumen (at 555 nm) 1.470588 x 10-3W
maxwell 10.0* x 10-9Wb
mho 1.0* S
micron 1.0* x 10-6m
mil (length) 25.4* x 10-6in
mil (volume) 1.0* x 10-9m3
mile (international) 1.609344* x 103m
mile (nautical, int.) 1.852* x 103m
mile (nautical, UK) 1.853 184* x 103m
mile per hour 447.04* x 10-3ms-1
milliard 1.0* x 109m3
millibar 100.0* Pa
millimètre of Hg(0°C) 133.3224 Pa
minim (UK) 59.19390 x 10-9m3
minim (US) 61,61151 x 10-9m3
minute (angle) 290.8882 x 10-6rad
minute 60.0* s
Non-SI Unit SI Unit
minute (sidereal) 59.83617 s
month (lunar) 2.551444 x 106s
nit 1.0* cdm-2
noggin (UK) 142.0654 x 10-6m3
oersted 1000/(4tc)* A m-1
ounce (avoirdupois) 28.349 52 x 10-3kg
ounce (UK fluid) 28.41307 x 10-6m3
ounce (US fluid) 29.573 53 x 10-6m3
pace 762.0* x 10-3m
parsec 30.85678 x 1015m
peck (UK) 9.09218* x 10-3m3
peck (US) 8.809768 x 10-3m3
pennyweight (troy) 1.555174 x 10-3kg
perch 5.0292* m
phot 10.0* x 103lx
pica(printers') 4.217518 x 10-3m
pint (UK) 568.2612 x 10-6 m3
pint (US dry) 550.6105 x 10-6m3
pint (US liquid) 473.1765 x 10-6 m3
point (printers') 351.459 8* x 10-6m
poise 100.0* x 10-3Pas
pole 5.0292* m
poncelot 980.665* W
pottle 2.273 045 x 10-3m3
pound (avoirdupois) 453.5924 x 10-3 kg
poundal 138.2550 x 10-3N
pound-force 4.448222 N
promaxwell 1.0* Wb
psi 6.894757 x 103Pa
puncheon (UK) 317.974 6 x 10-3m3
quad 1.055 056 x 1018J
quart (UK) 1.136522 x 10-3m3
quart (US dry) 1.101221 x 10-3m3
Non-SI Unit SI Unit
quart (US liquid) 946.3529 x 10-6 m3
quintal (metric) 100.0* kg
rad 10.0* x 10-3Gy
rayleigh 10/(4π) x 109s-1 m-2sr-1
rem 10.0* x 10-3Sv
REN 1/4000* S
reyn 689.5 x 103Pas
rhe 10.0* Pa-1s-1
rod 5.0292* m
rope (UK) 6.096* m
roentgen 258.0 x 10-6Ckg-1
rood (UK) 1.011714 x 103m2
rutherford 1.0* x 106Bq
rydberg 2.179 874 x 10-18J
scruple 1.295 978 x 10-3kg
seam 290.949 8 x 10-3m3
seconde (angle) 4.848 137 x 10-6 rad
second (sidereal) 997.269 6 x 10-3s
shake 100.0* x 10-10s
shed 100.0* x 10-54m2
slug 14.593 90 kg
square degree (π/180)2* sr
statampere 333.5641 x 10-12A
statcoulomb 333.564 1 x 10-12C
statfarad 1.112650 x 10-12F
stathenry 898.7552 x 109H
statmho 1.112650 x 10-12S
statohm 898.7552 x 109Ω
statvolt 299.7925 V
sthene 1.0* x 103N
stère 1.0* m3
stilb 10.0* x 103cdm-2
stokes 100.0* x 10-6m2s-1
Non-SI Unit SI Unit
quart (US liquid) 946.3529 x 10-6 m3
quintal (metric) 100.0* kg
rad 10.0* x 10-3Gy
rayleigh 10/(4π) x 109s-1 m-2sr-1
rem 10.0* x 10-3Sv
REN 1/4000* S
reyn 689.5 x 103Pas
rhe 10.0* Pa-1s-1
rod 5.0292* m
rope (UK) 6.096* m
roentgen 258.0 x 10-6Ckg-1
rood (UK) 1.011714 x 103m2
rutherford 1.0* x 106Bq
rydberg 2.179 874 x 10-18J
scruple 1.295 978 x 10-3kg
seam 290.949 8 x 10-3m3
second (angle) 4.848 137 x 10-6 rad
second (sidereal) 997.269 6 x 10-3s
shake 100.0* x 10-10s
shed 100.0* x 10-54m2
slug 14.593 90 kg
square degree (π/180)2* sr
statampere 333.5641 x 10-12A
statcoulomb 333.564 1 x 10-12C
statfarad 1.112650 x 10-12F
stathenry 898.7552 x 109H
statmho 1.112650 x 10-12S
statohm 898.7552 x 109Ω
statvolt 299.7925 V
sthene 1.0* x 103N
stère 1.0* m3
stilb 10.0* x 103cdm-2
stokes 100.0* x 10-6m2s-1
Non-SI Unit SI Unit
second (angle) 4.848 137 x 10-6 rad
second (sidereal) 997.269 6 x 10-3s
shake 100.0* x 10-10s
shed 100.0* x 10-54m2
slug 14.593 90 kg
square degree (π/180)2* sr
statampere 333.5641 x 10-12A
statcoulomb 333.564 1 x 10-12C
statfarad 1.112650 x 10-12F
stathenry 898.7552 x 109H
statmho 1.112650 x 10-12S
statohm 898.7552 x 109Ω
statvolt 299.7925 V
sthene 1.0* x 103N
stère 1.0* m3
stilb 10.0* x 103cdm-2
stokes 100.0* x 10-6m2s-1

Sources and references

[1] Graham WOAN., The cambridge Handbook of Physics Formulas, Cambride University Press 2000, vol. 43, pp. 11, 16, 1963-2000.



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