The Planck energy is the natural unit of energy, denoted by E_P. In physics, Planck units are physical units of measurement originally proposed by Max Planck. ...

1.956 × 10⁹ J 10¹⁹ GeV 0.5433 MWh To help compare different orders of magnitude we list here energies between 109 joules (a gigajoule, symbol GJ) and 1010 joules. ... The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. ... To help compare different orders of magnitude we list here energies between 109 joules (a gigajoule, symbol GJ) and 1010 joules. ... Wikipedia does not yet have an article with this exact name. ... The megawatt-hour (symbol: MWh) is a unit for measuring energy. ...

where

c is the speed of light in a vacuum Cherenkov effect in a swimming pool nuclear reactor. ...

is Planck's constant Plancks constant, denoted h, is a physical constant that is used to describe the sizes of quanta. ...

G is the gravitational constant According to the law of universal gravitation, the attractive force between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them. ...

The Planck energy is also the amount of energy contained in the Planck mass, which is about the mass of a small flea (not counting the kinetic and potential energies). While the Planck energy equals an already macroscopic amount of energy, it is nevertheless assumed to be an important quantity in particle physics - as soon as gravitation is taken into account. The Planck energy is not only the energy (in principle) necessary to probe the Planck length, but it is probably also the maximum energy that can fit into a region of that scale - which in this case will immediately collapse to a (very hot) Black Hole. The Planck mass is the natural unit of mass, denoted by mP. mP = ≈ 2. ... The Planck length is the natural unit of length, denoted by . ... A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior. ...

See also

• Planck's constant
• Holographic principle