mass-energy

Convertible physical quantities

Mass-energy refers to the equivalence between mass and energy expressed in Einstein's famous equation E=mc².

The principle establishes that mass can be converted to energy and vice versa—a small amount of mass yields enormous energy because it's multiplied by the speed of light squared.

This relationship underlies nuclear reactions and particle physics: The mass-energy of the fuel was released in the explosion.

equivalence

E=mc²

Energy-mass conversion relationship

inertia · conservation

cosmology

Big Bang

Universe's explosive origin

inflation · expansion · event horizon · quasar · neutron star · gravitational collapse · supernova · redshift

fission

nuclear reactor

Controlled fission energy source

splitting · neutrons · radioactive decay · atomic bomb · isotopes · gamma rays · nuclear waste · control rods · breeder reactor · half-life

spacetime

curvature

Deviation from flatness

time dilation · frame of reference · geodesic · gravitational lensing · wormhole · gravitational field · causality · twin paradox

fusion

plasma

Electrified matter state

tritium · helium-3 · ignition · confinement · sun · inertial confinement · magnetic confinement

Categories
Opposites
unified vs. separate physical quantities

mass-energyindependent variables

Factors manipulated in experiments

relativistic vs. classical physics

mass-energyNewtonian mechanics

Theory of motion and force

classical physics · classical mechanics

substantial vs. insubstantial

mass-energyvacuum

Absence of matter

void · nothingness · empty space · zero-point

Family

mass, energy, energetic, massive, biomass, kinetic energy, critical mass, potential energy, atomic mass

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