Orders of magnitude (energy)

This is for comparison purposes, a compilation of energy levels of different orders of magnitude. The data can often be understood as a "typical"; the converted values ​​are rounded.

Basic unit of energy in the International System of Units is 1 Joule (including watt-second ) ( unit symbol J or Ws), the symbols often E. The most common units are kilowatt hours 1 kWh = 3.6 MJ and electron volts 1 eV = 1.602 176 462 (63 ) · 10-19 J.

Yoktojoule - yJ

1 Yoktojoule = 10-24 J

• 6.0911 yJ = 38.02 μeV = energy of a hyperfine transition of cesium, which is used to define the second.

Zeptojoule - zJ

1 Zeptojoule = 10-21 J = 1.000 Yoktojoule

• 6 zJ = thermal energy of a free particle at room temperature ( about 40 meV )
• 160.2176462 (63) zJ = 1 = 1 eV = electron volt energy of an electron, after passing through the voltage of one volt.

Attojoule - aJ

1 Attojoule = 10-18 J = 1.000 Zeptojoule

• 0.5 aJ = 3.1 eV = energy of a photon violet light with 400 nm wavelength
• 4.35974381 (34 ) aJ = 27.2 eV = 1 Hartree, twice the value of the binding energy of the electron in the ground state of the hydrogen atom.

Femtojoules - fJ

1 femtojoules = 10-15 J = 1.000 Attojoule

• 81.87 fJ = 511 keV = rest energy of an electron

Picojoule - pJ

1 picojoule = 10-12 J = 1.000 femtojoules

Nanojoules - nJ

1 nanojoules = 10-9 J = 1.000 picojoule

Microjoules - mu.J

1 microjoules = 10-6 J = 1.000 nanojoules

Millijoule - mJ

1 millijoule = 10-3 J = 1.000 micro joules

• 48 mJ = kinetic energy of a small hailstone ( mass 0.5 g), which falls at a speed of 50 km / h
• 205 mJ = rotational energy of a turntable ( 3 kg weight, diameter 30 cm) at 33.3 revolutions per minute.

Joules - J

1 Joule = 103 millijoule

Kilojoules - kJ

1 kilojoule = 103 joules = 1,000 joules

Megajoule - MJ

1 megajoule = 106 J = 1,000 kilojoules

• 2.3 MJ = Physiological fuel value of 100 g chocolate
• 3.6 MJ = 1 kilowatt-hour ( kWh) - billing unit for energy such as power consumption, heat output
• 6-7 MJ = Daily basal metabolic rate of an adult person weighing 70 kg
• 29.3 MJ = Vacant amount of energy during combustion of 1 kg of coal ( coal equivalent - SKE )
• 41.9 MJ = Vacant amount of energy during combustion of 1 kg of crude oil (oil unit - dE )

Gigajoule - GJ

1 gigajoule = 109 J = 1,000 megajoules

Terajoule - TJ

1 Terajoule = 1012 J = 1.000 gigajoules

Petajoules - PJ

1 petajoules = 1015 J = 1000 Terajoule

EJ - EJ

1 EJ = 1018 J = 1.000 petajoules

Zettajoule - ZJ

1 Zettajoule = 1021 J = 1000 EJ

Yottajoule - YJ

1 Yottajoule = 1024 J = 1000 Zettajoule

• 3.9 YJ = From the sun to the earth's surface radiated energy per year (solar energy)
• 5.8 YJ = energy that would be needed to heat all the water of the earth (1.39 · 109 km3 ) by 1 degree
• 386 YJ = energy release of the Sun per second

Orders of magnitude higher