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A foe is a unit of energy equal to 10^44 joules (= 9.478x10^40 BTU) that was coined by physicist Gerry Brown of Stony Brook University. To measure the staggeringly immense amount of energy produced by a supernova, specialists occasionally use the "foe", an acronym derived from the phrase [ten to the power of] fifty-one ergs, or 10^51 ergs. This unit of measure is convenient because a supernova typically releases about one foe of observable energy in a very short period of time (which can be measured in seconds).
FoeConversion table | ||
|---|---|---|
| 1 foe | = 1.25E+30 atomic bomb [nuclear weapon] (at bomb) | ⇛ |
| 1 foe | = 2.2937126583579E+61 atomic unit of energy (au) | ⇛ |
| 1 foe | = 1.0E+62 attojoules (aJ) | ⇛ |
| 1 foe | = 2.7777777777778E+58 attowatt hour (aWh) | ⇛ |
| 1 foe | = 1.634521085322E+34 barrel of oil equivalent (BOE) | ⇛ |
| 1 foe | = 9.4781698791344E+40 british thermal unit (BTU) | ⇛ |
| 1 foe | = 9.4369001670331E+40 british thermal unit 39°F 3.9°C (BTU39°F) | ⇛ |
| 1 foe | = 9.4804342797335E+40 british thermal unit 59°F 15°C (BTU59°F) | ⇛ |
| 1 foe | = 9.4815489058293E+40 british thermal unit 60°F 15.6°C (BTU60°F) | ⇛ |
| 1 foe | = 9.4815489058293E+40 british thermal unit 63°F 17.2°C (BTU63°F) | ⇛ |
| 1 foe | = 9.4781698791344E+40 british thermal unit ISO (BTUiso) | ⇛ |
| 1 foe | = 9.4781712031332E+40 british thermal unit IT (BTUit) | ⇛ |
| 1 foe | = 9.4708628903179E+40 british thermal unit Mean (BTUmean) | ⇛ |
| 1 foe | = 9.4845141479728E+40 british thermal unit Thermochemical (BTUth) | ⇛ |
| 1 foe | = 2.3900573613767E+43 calories (cal) | ⇛ |
| 1 foe | = 2.3892008123283E+43 calories 15°C (cal15°C) | ⇛ |
| 1 foe | = 2.391257562352E+43 calories 20°C (cal20°C) | ⇛ |
| 1 foe | = 2.378404090855E+43 calories 3.98°C (cal3.98°C) | ⇛ |
| 1 foe | = 2.388458966275E+43 calories IT (calIT) | ⇛ |
| 1 foe | = 2.3866234528713E+43 calories Mean (calMean) | ⇛ |
| 1 foe | = 2.3900573613767E+43 calories Thermochemical (calTh) | ⇛ |
| 1 foe | = 5.2656506684073E+40 celsius heat unit (CHU) | ⇛ |
| 1 foe | = 1.0E+46 centijoules (cJ) | ⇛ |
| 1 foe | = 2.7777777777778E+42 centiwatt hour (cWh) | ⇛ |
| 1 foe | = 9.8692326671601E+44 cubic centimeter of atmosphere (cc atm) | ⇛ |
| 1 foe | = 3.4852866243759E+40 cubic foot of atmosphere (cu ft atm) | ⇛ |
| 1 foe | = 9.4781712031332E+37 cubic foot of natural gas (cu ft ng) | ⇛ |
| 1 foe | = 1.290846897917E+39 cubic yard of atmosphere (cu yd atm) | ⇛ |
| 1 foe | = 1.0E+43 decajoules (daJ) | ⇛ |
| 1 foe | = 2.7777777777778E+39 decawatt hour (daWh) | ⇛ |
| 1 foe | = 1.0E+45 decijoules (dJ) | ⇛ |
| 1 foe | = 2.7777777777778E+41 deciwatt hour (dWh) | ⇛ |
| 1 foe | = 6.2414959617521E+62 electron volt (eV) | ⇛ |
| 1 foe | = 1.0E+51 ergs (ergs) | ⇛ |
| 1 foe | = 6.2414959617521E+44 exaelectron volt (EeV) | ⇛ |
| 1 foe | = 1.0E+26 exajoules (EJ) | ⇛ |
| 1 foe | = 2.7777777777778E+22 exawatt hour (EWh) | ⇛ |
| 1 foe | = 1.0E+59 femtojoules (fJ) | ⇛ |
| 1 foe | = 2.7777777777778E+55 femtowatt hour (fWh) | ⇛ |
| 1 foe | = 1 foe (foe) | ⇛ |
| 1 foe | = 7.375610331755E+43 foot pound (ftlb) | ⇛ |
| 1 foe | = 7.3756214927727E+43 foot pound force (ft lbf) | ⇛ |
| 1 foe | = 2.3730360404235E+41 foot poundal (ft pdl) | ⇛ |
| 1 foe | = 2.170927691084E+41 gallon atmosphere UK (UK gal atm) | ⇛ |
| 1 foe | = 2.6071754488838E+41 gallon atmosphere US (US gal atm) | ⇛ |
| 1 foe | = 8.2440230832646E+35 gasoline gallon equivalent (gge) | ⇛ |
| 1 foe | = 6.2414959617521E+53 gigaelectron volt (GeV) | ⇛ |
| 1 foe | = 2.3900573613767E+31 gigagrams of TNT (GgTNT) | ⇛ |
| 1 foe | = 1.0E+35 gigajoules (GJ) | ⇛ |
| 1 foe | = 2.3900573613767E+25 gigatons of TNT (GtTNT) | ⇛ |
| 1 foe | = 2.7777777777778E+31 gigawatt hour (GWh) | ⇛ |
| 1 foe | = 2.3900573613767E+40 grams of TNT (gTNT) | ⇛ |
| 1 foe | = 2.2937126583579E+61 hartree (Eh, Ha) | ⇛ |
| 1 foe | = 1.0E+42 hectojoules (hJ) | ⇛ |
| 1 foe | = 2.7777777777778E+38 hectowatt hour (hWh) | ⇛ |
| 1 foe | = 1.6666666666667E+30 hiroshima bomb explosion (hbe) | ⇛ |
| 1 foe | = 3.7250613599862E+37 horsepower hour (hph) | ⇛ |
| 1 foe | = 8.8507457913272E+44 inch pound force (in lbf) | ⇛ |
| 1 foe | = 1.0E+44 joules (J) | ⇛ |
| 1 foe | = 2.3900573613767E+40 kilocalories (kcal) | ⇛ |
| 1 foe | = 6.2414959617521E+59 kiloelectron volt (keV) | ⇛ |
| 1 foe | = 2.3900573613767E+37 kilograms of TNT (kgTNT) | ⇛ |
| 1 foe | = 1.0E+41 kilojoules (kJ) | ⇛ |
| 1 foe | = 2.3900573613767E+31 kilotons of TNT (ktTNT) | ⇛ |
| 1 foe | = 2.7777777777778E+37 kilowatt hour (kWh) | ⇛ |
| 1 foe | = 2.3900573613767E+40 large calories (Cal) | ⇛ |
| 1 foe | = 9.8692326671601E+41 liter atmosphere (l atm) | ⇛ |
| 1 foe | = 6.2414959617521E+56 megaelectron volt (MeV) | ⇛ |
| 1 foe | = 2.3900573613767E+34 megagrams of TNT (MgTNT) | ⇛ |
| 1 foe | = 1.0E+38 megajoules (MJ) | ⇛ |
| 1 foe | = 2.3900573613767E+28 megatons of TNT (MtTNT) | ⇛ |
| 1 foe | = 2.7777777777778E+34 megawatt hour (MWh) | ⇛ |
| 1 foe | = 1.0E+50 microjoules (µJ) | ⇛ |
| 1 foe | = 2.3900573613767E+40 microtons of TNT (μtTNT) | ⇛ |
| 1 foe | = 2.7777777777778E+46 microwatt hour (μWh) | ⇛ |
| 1 foe | = 6.2414959617521E+65 millielectron volt (meV) | ⇛ |
| 1 foe | = 1.0E+47 millijoules (mJ) | ⇛ |
| 1 foe | = 2.3900573613767E+37 millitons of TNT (mtTNT) | ⇛ |
| 1 foe | = 2.7777777777778E+43 milliwatt hour (mWh) | ⇛ |
| 1 foe | = 1.0E+53 nanojoules (nJ) | ⇛ |
| 1 foe | = 2.7777777777778E+49 nanowatt hour (nWh) | ⇛ |
| 1 foe | = 1.0E+44 newton meter (Nm) | ⇛ |
| 1 foe | = 6.2414959617521E+47 petaelectron volt (PeV) | ⇛ |
| 1 foe | = 2.3900573613767E+25 petagrams of TNT (PgTNT) | ⇛ |
| 1 foe | = 1.0E+29 petajoules (PJ) | ⇛ |
| 1 foe | = 2.7777777777778E+25 petawatt hour (PWh) | ⇛ |
| 1 foe | = 1.0E+56 picojoules (pJ) | ⇛ |
| 1 foe | = 2.7777777777778E+52 picowatt hour (pWh) | ⇛ |
| 1 foe | = 9.4781712031332E+25 quads (quad) | ⇛ |
| 1 foe | = 4.5874253167158E+61 rydberg (Ry) | ⇛ |
| 1 foe | = 9.8692326671601E+44 standard cubic centimeter (scc) | ⇛ |
| 1 foe | = 3.4852866243759E+40 standard cubic foot (scf) | ⇛ |
| 1 foe | = 1.290846897917E+39 standard cubic yard (scy) | ⇛ |
| 1 foe | = 6.2414959617521E+50 teraelectron volt (TeV) | ⇛ |
| 1 foe | = 2.3900573613767E+28 teragrams of TNT (TgTNT) | ⇛ |
| 1 foe | = 1.0E+32 terajoules (TJ) | ⇛ |
| 1 foe | = 2.3900573613767E+22 teratons of TNT (TtTNT) | ⇛ |
| 1 foe | = 2.7777777777778E+28 terawatt hour (TWh) | ⇛ |
| 1 foe | = 9.4804342797335E+35 therm US (thm) | ⇛ |
| 1 foe | = 2.388458966275E+37 thermie (th) | ⇛ |
| 1 foe | = 3.4143676591095E+33 ton of coal equivalent (TCE) | ⇛ |
| 1 foe | = 2.388458966275E+33 tonne of oil equivalent (toe) | ⇛ |
| 1 foe | = 2.3900573613767E+34 tons of TNT (tTNT) | ⇛ |
| 1 foe | = 2.7777777777778E+40 watt hour (Wh) | ⇛ |
| 1 foe | = 1.0E+68 yoctojoules (yJ) | ⇛ |
| 1 foe | = 2.7777777777778E+64 yoctowatt hour (yWh) | ⇛ |
| 1 foe | = 1.0E+20 yottajoules (YJ) | ⇛ |
| 1 foe | = 2.7777777777778E+16 yottawatt hour (YWh) | ⇛ |
| 1 foe | = 1.0E+65 zeptojoules (zJ) | ⇛ |
| 1 foe | = 2.7777777777778E+61 zeptowatt hour (zWh) | ⇛ |
| 1 foe | = 1.0E+23 zettajoules (ZJ) | ⇛ |
| 1 foe | = 2.7777777777778E+19 zettawatt hour (ZWh) | ⇛ |