calculand - Thomson cross section
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Impressum/Contact
⅓·8·π·rₑ²
⅙·e⁴/(π·εₒ²·mₑ²·c⁴)
⅓·8·π·(α·ħ/(mₑ·c))²
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>
Annulus
Circle
Circular sector
Circular segment
Cone
Cube
Cuboctahedron
Cuboid
Decagon
Dodecagon
Dodecahedron
Ellipse
Event horizon
Heptagon
Hexagon
Icosagon
Icosahedron
Nonagon
Octagon
Octahedron
Parallelogram
Pentagon
Permeability
Planck area
Polygon
Rectangle
Rhombus
Sphere
Spherical cap
Spheroid
Square
Tetragon
Tetrahedron
Tetrakis hexahedron
Thomson cross section
Torus
Trapezoid
Triangle
Thomson cross section -
σₜ = ⅙ · e⁴ / (π · εₒ² · mₑ² · c⁴)
abC - Abcoulomb
Ah - Ampere hour
Amin - Ampere minute
As - Ampere second
aC - Attocoulomb
Bis - Biot second
B/m² - Buckingham per square metre
B/Ų - Buckingham per square ångstrøm
cAh - Centiampere hour
cC - Centicoulomb
C - Coulomb
D/ft - Debye per foot
D/in - Debye per inch
D/m - Debye per metre
D/Å - Debye per ångstrøm
daC - Decacoulomb
dAh - Deciampere hour
dC - Decicoulomb
qₑ - Electron charge
e - Elementary charge
EC - Exacoulomb
faraday - Faraday
fC - Femtocoulomb
Fr - Franklin
GC - Gigacoulomb
hC - Hectocoulomb
J/V - Joule per volt
kC - Kilocoulomb
kWh/V - Kilowatt hour per volt
Mx/Ω - Maxwell per ohm
MC - Megacoulomb
µC - Microcoulomb
mAh - Milliampere hour
mC - Millicoulomb
nC - Nanocoulomb
Nm/V - Newton metre per volt
PC - Petacoulomb
pC - Picocoulomb
q(P) - Planck charge
statC - Statcoulomb
TC - Teracoulomb
VF - Volt farad
Vs/Ω - Volt second per ohm
Wh/V - Watt hour per volt
Ws/V - Watt second per volt
Wb/Ω - Weber per ohm
yC - Yoctocoulomb
YC - Yottacoulomb
zC - Zeptocoulomb
ZC - Zettacoulomb
Ah/Vm - Ampere hour per volt metre
Amin/Vm - Ampere minute per volt metre
As/Vm - Ampere second per volt metre
A² s⁴/kg m³ - Ampere squared quartic second per kilogram cubic metre
aF/m - Attofarad per metre
cF/m - Centifarad per metre
C/Vm - Coulomb per volt metre
daF/m - Decafarad per metre
dF/m - Decifarad per metre
εₒ - Electric constant (Vacuum permittivity)
e/Vm - Elementary charge per volt metre
EF/m - Exafarad per metre
F/cm - Farad per centimetre
F/dm - Farad per decimetre
F/ft - Farad per foot
F/in - Farad per inch
F/km - Farad per kilometre
F/m - Farad per metre
F/mm - Farad per millimetre
fF/m - Femtofarad per metre
GF/m - Gigafarad per metre
hF/m - Hectofarad per metre
kF/m - Kilofarad per metre
MF/m - Megafarad per metre
Ʊs/m - Mho second per metre
µF/m - Microfarad per metre
mF/m - Millifarad per metre
nF/cm - Nanofarad per centimetre
nF/km - Nanofarad per kilometre
nF/m - Nanofarad per metre
PF/m - Petafarad per metre
pF/cm - Picofarad per centimetre
pF/km - Picofarad per kilometre
pF/m - Picofarad per metre
s/Ωm - Second per ohm metre
Ss/m - Siemens second per metre
TF/m - Terafarad per metre
yF/m - Yoctofarad per metre
YF/m - Yottafarad per metre
zF/m - Zeptofarad per metre
ZF/m - Zettafarad per metre
m α tauri - Aldebaran
m α cen A - Alpha Centauri A
m α cen B - Alpha Centauri B
ag - Attogram
batman (Bu) - Batman (نامط, Bukhara)
batman (Ta) - Batman (نامط, Tabriz)
berkovets - Berkovets (берковец)
m α ori - Betelgeuse
Kt, ct - Carat
cDa - Centidalton
cg - Centigram
m ⚳ - Ceres
Da - Dalton
dan - Dan (市担)
daDa - Decadalton
dag - Decagram
dDa - Decidalton
dg - Decigram
dolia - Dolia (доля)
m ⊕, m ♁ - Earth
mₑ - Electron mass
eV/c² - Electronvolt per speed of light squared
Eg - Exagram
fg - Femtogram
fen - Fen (市分)
fun - Fun (分)
funt - Funt (фунт)
Gg - Gigagram
Gt - Gigatonne
g - Gram
gran - Gran (гран)
G - Grave
hao - Hao (毫)
hDa - Hectodalton
hg - Hectogram
hu - Hu (忽)
cwt. l. - Hundredweight (long, imperial)
ztr, ctr. - Hundredweight (metric)
cwt. sh. - Hundredweight (short, cental)
hyl, p s²/m - Hyl
hyle - Hyle
i - Inerta
jin - Jin (市斤)
J/c² - Joule per speed of light squared
J s²/m² - Joule second squared per square metre
m ♃ - Jupiter
kamme - Kamme (貫目)
kan - Kan (貫)
kDa - Kilodalton
kg - Kilogram
khyl, kp s²/m - Kilohyl
kt - Kilotonne
kin - Kin (斤)
lana - Lana (лана)
li - Li (市厘)
liang - Liang (市两)
tn. l. - Long ton
lot - Lot (лот)
m ♂ - Mars
MDa - Megadalton
Mg - Megagram
Mt - Megatonne
m ☿ - Mercury
µg - Microgram
mDa - Millidalton
mg - Milligram
momme - Momme (匁)
m ☾ - Moon
mug - Mug (Metric slug)
mag - Myriagram
ng - Nanogram
m ♆ - Neptune
m(n) - Neutron mass
Ns²/m - Newton second squared per metre
oz. - Ounce
packen - Packen (паккен)
par - Par
Pg - Petagram
pg - Picogram
m(P) - Planck mass
m ♇ - Pluto
pood - Pood (пуд)
lb(m) - Pound (metric)
lb - Pound
mₚ - Proton mass
qian - Qian (市钱)
ryo - Ryō (両)
m ♄ - Saturn
m(S) - Schrödinger mass
tn. sh. - Short ton
si - Si (絲)
slug, lbf s²/ft - Slug
st - Stone
m(St) - Stoney mass
m ☉ - Sun
tael - Tael
TME, TMU - Technical mass unit
Tg - Teragram
tod - Tod
t - Tonne (metric ton)
oz. tr. - Troy ounce
uncia - Uncia (унция)
u, amu - Unified atomic mass unit
m ⛢ - Uranus
m ♀ - Venus
yg - Yoctogram
Yg - Yottagram
zg - Zeptogram
Zg - Zettagram
zolotnik - Zolotnik (золотник)
AU/d, UA/d - Astronomical unit per day
AU/y, UA/a - Astronomical unit per year
am/s - Attometre per second
B - Bubnoff unit
cm/d - Centimetre per day
cm/h - Centimetre per hour
cm/min - Centimetre per minute
cm/s - Centimetre per second
cm/y, cm/a - Centimetre per year
dam/min - Decametre per minute
dam/s - Decametre per second
dm/d - Decimetre per day
dm/h - Decimetre per hour
dm/min - Decimetre per minute
dm/s - Decimetre per second
dm/y, dm/a - Decimetre per year
Em/s - Exametre per second
fm/s - Femtometre per second
ft/d - Foot per day
ft/h - Foot per hour
ft/min - Foot per minute
ft/s - Foot per second
ft/y, ft/a - Foot per year
Gm/s - Gigametre per second
hm/min - Hectometre per minute
hm/s - Hectometre per second
in/d - Inch per day
in/h - Inch per hour
in/min - Inch per minute
in/s - Inch per second
in/y, in/a - Inch per year
km/d - Kilometre per day
km/h, kph - Kilometre per hour
km/min - Kilometre per minute
km/s - Kilometre per second
km/y, km/a - Kilometre per year
kine - Kine
kn - Knot
Ma (-50 °C) - Mach (-50 °C)
Ma (0 °C) - Mach (0 °C)
Ma (100 °C) - Mach (100 °C)
Ma (20 °C) - Mach (20 °C)
Ma (25 °C) - Mach (25 °C)
Ma (250 °C) - Mach (250 °C)
Mm/s - Megametre per second
m/d - Metre per day
m/h - Metre per hour
m/min - Metre per minute
m/s - Metre per second
m/y, m/a - Metre per year
µm/d - Micrometre per day
µm/h - Micrometre per hour
µm/min - Micrometre per minute
µm/s - Micrometre per second
mi/d - Mile per day
mph, mi/h - Mile per hour
mi/min - Mile per minute
mi/s - Mile per second
mi/y, mi/a - Mile per year
mm/d - Millimetre per day
mm/h - Millimetre per hour
mm/min - Millimetre per minute
mm/s - Millimetre per second
mm/y, mm/a - Millimetre per year
nm/d - Nanometre per day
nm/h - Nanometre per hour
nm/s - Nanometre per second
Pm/s - Petametre per second
pm/h - Picometre per hour
pm/s - Picometre per second
l(P)/min - Planck length per minute
l(P)/s - Planck length per second
c - Speed of light
Tm/s - Terametre per second
yd/d - Yard per day
yd/h - Yard per hour
yd/min - Yard per minute
yd/s - Yard per second
yd/y, yd/a - Yard per year
ym/s - Yoctometre per second
Ym/s - Yottametre per second
zm/s - Zeptometre per second
Zm/s - Zettametre per second
Å/s - Ångstrøm per second
ac - Acre
a - Are
b - Barn
barony - Barony
cho - Chō (町)
circ. in. - Circular inch
circ. mil. - Circular mil (Circular thou)
Dez. - Dezimal (bavarian)
fb - Femtobarn
fen - Fen (市分)
go - Gō (合)
ha - Hectare
jo - Jō (畳)
kb - Kilobarn
li - Li (市厘)
µb - Microbarn
mb - Millibarn
Mg - Morgen (metric)
mu - Mu (市亩 / 畝)
nb - Nanobarn
outhouse - Outhouse
pb - Picobarn
A(P), l²(P) - Planck area
qing - Qing (市顷)
vha - Quarter hectare (Viertelhektar)
se - Se (畝)
shaku - Shaku (勺)
shed - Shed
shi - Shí (市石)
am² - Square attometre
cm² - Square centimetre
dam² - Square decametre
dm² - Square decimetre
Em² - Square exametre
fm² - Square femtometre
ft², sq. ft. - Square foot
Gm² - Square gigametre
Gpc² - Square gigaparsec
hm² - Square hectometre
in², sq. in. - Square inch
km² - Square kilometre
kpc² - Square kiloparsec
Ld² - Square lightday
Lh² - Square lighthour
Lm² - Square lightminute
Ls² - Square lightsecond
ly² - Square lightyear
Mm² - Square megametre
Mpc² - Square megaparsec
m² - Square metre
µm² - Square micrometre
mi², sq. mi. - Square mile
mil², thou² - Square milli-inch (Square mil, Square thou)
mm² - Square millimetre
mam² - Square myriametre
nm² - Square nanometre
pc² - Square parsec
Pm² - Square petametre
pm² - Square picometre
Tm² - Square terametre
Tpc² - Square teraparsec
yd², sq. yd. - Square yard
ym² - Square yoctometre
Ym² - Square yottametre
zm² - Square zeptometre
Zm² - Square zettametre
Ų - Square ångstrøm
tan - Tan (段 / 反)
σₜ - Thomson cross section
tsubo - Tsubo (坪 / 歩)
TIE - Two inch equivalent
⅙ ·
⁴
/ (π ·
²
·
²
·
⁴
) =
© 2010 - 2025 Norbert Schneider
