foe

Acronym of [ten to the power of] fifty-one ergs, due to equalling 10⁵¹ ergs; coined by Gerald Brown of Stony Brook University in his work with Hans Bethe.


joule

Named after English physicist James Prescott Joule (1818–1889). The surname is a variant of Joel.

named-after

International System of Units
International System of Units

In the International System of Units, the derived unit of energy, work and heat; the work required to exert a force of one newton for a distance of one metre. Equivalent to one watt of power for a duration of one second. Symbol: J


erg

From Ancient Greek ἔργον (érgon, “work”). Doublet of ergon and work.

A unit of work or energy, being the amount of work done by a force of one dyne applied through a distance of one centimeter. Equal to 10⁻⁷ joules.


erg

From French erg, from Algerian Arabic, from Arabic عِرْق (ʕirq).

(geomorphology) A large desert region of sand dunes with little or no vegetation, especially in the Sahara.


erg

en-verb

erg (third-person singular simple present ergs, present participle erging, simple past and past participle erged)

ergs (present singular third-person)
erging (participle present)
erged (participle past)
erged (past)

I erg every morning.

She erged a steady state piece.

What I mean to sy is, the exercise is helping. Although I'm not sure how you erg properly at this stage, Pulling into the sternum would be problematic.

2022, Bonnie Garmus, Lessons in Chemistry, page 187:

(rowing, slang, transitive, intransitive) To use an ergometer.


BTU

British thermal unit
British thermal unit#English

(energy) Initialism of British thermal unit.


British thermal unit

en-noun

British thermal unit (plural British thermal units)

British thermal units (plural)
BTU (alternative)
Btu (alternative)

The quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a particular temperature (there are several different precise definitions) and a pressure of one atmosphere.

英熱單位 /英热单位

the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a particular temperature


kilowatt-hour

(electricity) A unit of energy equal to that done by one kilowatt acting for one hour.


electron volt

electron volts (plural)
eV (abbreviation)
electronvolt (alternative)

To get a feel for the size, the energy required to completely liberate an electron from the ground state of a hydrogen atom is 13.6 electron volts.

2011, Brian Cox, Jeff Forshaw, The Quantum Universe, Allen Lane, page 158n:

potential difference
potential difference

(physics) A unit for measuring the energy of subatomic particles; the energy equal to that attained by an electron moving through a potential difference of one volt. Equivalent to 1.6022 × 10⁻¹⁹ joules.

elektron volt

a unit for measuring the energy of subatomic particles


calorie

Borrowed from French calorie, formed from Latin calor. It was originally defined as the large calorie in the early 19th century, with the small calorie being defined some decades later.

Biotics possess extraordinary abilities, but they must live with minor inconveniences. The most obvious issue is getting adequate nutrition. Creating biotic mass effects takes such a toll on metabolism that active biotics develop ravenous appetites. The standard Alliance combat ration for a soldier is 3000 calories per day; biotics are given 4500, as well as a canteen of potent energy drink for quick refreshment after hard combat.

2008, BioWare, Mass Effect (Science Fiction), Redwood City: Electronic Arts, →ISBN, →OCLC, PC, scene: Biotics: Life as a Biotic Codex entry:

Mostly, the microbiome is beneficial. It helps with digestion and enables people to extract a lot more calories from their food than would otherwise be possible. Research over the past few years, however, has implicated it in diseases from atherosclerosis to asthma to autism.

2013 June 29, “A punch in the gut”, in The Economist, volume 407, number 8842, pages 72–3:

(nutrition) Kilogram calorie or large calorie. A unit of energy 1000 times larger than the gram calorie. It is equivalent to the gram kilocalorie, about 4.2 kilojoules.

(physical chemistry, physics, obsolete) The gram calorie or small calorie, a non-SI unit of energy, equivalent to approximately 4.2 joules. This unit was widely used in chemistry and physics, being the amount of energy needed to raise the temperature of 1 gram of water by 1°C.

سُعْر

amount of heat to raise 1 gram of water by 1 °C


kilocalorie

A non-SI unit of energy equal to 1,000 calories, used (now rare) in chemistry or physics; equal to 1 calorie as used in nutrition. Symbol kcal.


kiloton

kilotons (plural)
kilotonne (alternative)

That's a 300-kiloton nuclear warhead.

Halifax in Canada was devastated by a ship exploding in 1917. SS Mont Blanc, a French vessel loaded with 2.9 kilotons of explosives, collided with the Imo.

2022 August 24, Bruce Healey, “Wartime tunnel crash: a miraculous escape”, in RAIL, number 964, page 53:

A measure of the strength of an explosion or a bomb based on how many thousand tons of TNT would be needed to produce the same energy.


megaton

megatons (plural)
megatonne (alternative)

The sins of all our fathers, being dumped on us — the sons
The only choice we're given is: How many megatons?
And I eschew you!
And I say: Screw you!
And I hope you're blue, too.

1986, Kirk Thatcher, 44:05 from the start, in Star Trek IV: The Voyage Home, Paramount Pictures, →OCLC:

Integrating data from all continents and major biomes, we conservatively estimate 20 × 1015 (20 quadrillion) ants on Earth, with a total biomass of 12 megatons of dry carbon.

2022 September 19, Schultheiss et al., “The abundance, biomass, and distribution of ants on Earth”, in Proceedings of the National Academy of Sciences of the United States of America, page 1, column 2:

A measure of the strength of an explosion or a bomb based on how many million tons of TNT would be needed to produce the same energy.


megaelectron volt

megaelectron volt (plural megaelectron volts)

One million electron volts, abbreviated as MeV.

mégaélectronvolt

one million electron volts, abbreviated as MeV


foot-pound

foot-pounds (plural)
as: ft-lb (abbreviation)

(physics) Deprecated abbreviation for foot⋅pound-force, a unit of work or energy.


foot-poundal

He […] made abstruse calculations as to the flight of balls off sloped club-faces, as to the foot-poundals of energy exercised by one muscle or the other, and as to theories of spin.

1924, Ford Madox Ford, Some Do Not... (Parade's End), Penguin, published 2012, page 65:

(dated) A unit of work done when by a force of one poundal moves through a distance of one foot


watt-hour

A unit of electrical energy equal to the power of one watt in use for one hour; often used as a unit of electricity consumption. Equal to 3600 joule.


gigaton

gigatons (plural)
gigatonne (alternative)

A measure of the strength of an explosion or a bomb based on how many billion tons of TNT would be needed to produce the same energy.


teraton

A measure of the strength of an explosion or a bomb based on how many trillion tons of TNT would be needed to produce the same energy.


kiloelectronvolt

(physics) A unit of energy equal to a thousand electron volts


Planck energy

(physics) A natural unit of energy, equivalent to the mass energy of a Planck particle (E_P=c^(2m_P)≈1.95608×10⁹J) or the energy per quantum at a temperature of one Planck temperature (kT_P).


megawatt-hour

megawatt-hours (plural)
megawatt hour (alternative)

A unit of energy, especially of electrical energy, equal to that done by one megawatt acting for one hour (abbreviation: MWh).


TNT equivalent

The amount of energy released by an explosion expressed in terms of the amount of TNT needed to generate a similar explosion. Used especially to describe nuclear bombs.


hartree

Named after the British physicist Douglas Hartree (1897–1958).

The atomic unit of energy, defined as 2R_∞hc, where R_∞ is the Rydberg constant, h is the Planck constant and c is the speed of light.


bethe

Decapitalization of Bethe. Coined by astrophysicist Gerald E. Brown. Named after astrophysicist Hans Bethe, his collaborator on papers where this value frequently occurs.

A unit of energy equivalent to 10⁵¹ ergs, or 10⁴⁴ joules.

foe

fifty-one ergs; magnitude of the fifty-first order of ergs


terawatt-year

(electricity) A unit of electrical energy equal to that done by one terawatt acting for one year.