Gigaelectronvolts to British Thermal Units (GeV to BTU)
1 gigaelectronvolt equals 1.518570443×10⁻¹³ British thermal units (rounded).
How to convert gigaelectronvolts to British thermal units
To convert gigaelectronvolts to British thermal units, multiply the number of gigaelectronvolts by 1.518570443×10⁻¹³. The factor is rounded to 10 significant digits. To go the other way, multiply British thermal units by 6,585,140,678,191 (rounded).
British thermal units = gigaelectronvolts × 1.518570443×10⁻¹³
Example: 10 gigaelectronvolts = 1.518570443×10⁻¹² British thermal units.
The 'calorie' on food labels is really a kilocalorie. The thermochemical calorie (4.184 J) is used here unless marked IT.
About these units
Gigaelectronvolt (GeV)
One billion electronvolts. The scale of particle accelerators; the proton mass is about 0.938 GeV/c².
Accelerators brought this unit into use. Older documents wrote BeV for billion electronvolts, and the Bevatron at Berkeley, which began operating in 1954 and reached a maximum of 13 GeV, took its name from the idea. Creating antiprotons there needed a proton beam of about 6.2 GeV, and the antiproton was found in 1955. The modern symbol GeV equals 1.602176634 x 10^-10 J.
Masses of heavy particles are quoted in GeV/c squared. A proton is about 0.938 GeV/c squared, and the Higgs boson, announced on 4 July 2012 at CERN, has a mass near 125 GeV, about 133 times the proton. At the Large Hadron Collider each proton beam reached 6.5 TeV in 2015, which is 6,500 GeV. The step above is the TeV, a thousand GeV, so the GeV sits in the middle of the energy range of high-energy physics.
1 gigaelectronvolt = 1.602176634×10⁻¹⁰ joules (exactly).
Sources: Wikipedia: Bevatron; Wikipedia: Large Hadron Collider; Wikipedia: Electronvolt; Wikipedia: Proton
British Thermal Unit (BTU)
The International Table BTU, exactly 1,055.05585262 joules. The energy to heat one pound of water by one degree Fahrenheit; used for heating, cooling and gas appliances in the US.
Few energy units come in as many versions as the British thermal unit. It was defined as the heat needed to raise one pound of liquid water by one degree Fahrenheit, but because water's heat capacity shifts slightly with temperature, definitions differ by up to 0.5 percent: about 1,054.35 J for the thermochemical Btu, 1,054.80 J at 59 degrees Fahrenheit (used for American natural gas pricing), 1,054.68 J at 60 degrees (mainly Canadian), and 1,059.67 J at 39 degrees. A 1942 note suggests the term apparently arose in the United States and was later adopted in Britain.
The version on this site is the International Table Btu, about 1,055.06 J, which comes from the international steam table conferences that tied heat units to the joule. Joule's own 1850 experiments gave 772.692 foot-pounds of work per Btu, the number that first linked heat to mechanical effort.
Today the Btu survives in natural gas pricing (MMBtu means a million Btu), US building energy reporting, and equipment ratings in Btu per hour. One ton of air-conditioning is 12,000 Btu/h, or 3.52 kW. A single wooden kitchen match burning releases about one Btu.
1 British thermal unit = 1,055.055853 joules (approximately).
Sources: Wikipedia: British thermal unit; Wikipedia: James Prescott Joule
Related conversions
- British thermal units to gigaelectronvolts (reverse)
- Gigaelectronvolts to joules
- Gigaelectronvolts to kilojoules
- Gigaelectronvolts to watt-hours
- Gigaelectronvolts to kilowatt-hours
- Gigaelectronvolts to calories
- Gigaelectronvolts to kilocalories
- Joules to British thermal units
- Kilojoules to British thermal units
- Watt-hours to British thermal units
- Kilowatt-hours to British thermal units
- Calories to British thermal units
- Kilocalories to British thermal units
- Megajoules to British thermal units
- Gigajoules to British thermal units
- Megawatt-hours to British thermal units
- Foot-pounds to British thermal units
- Millijoules to British thermal units
- Electronvolts to British thermal units
See all energy units.