Warm bodies emit infrared radiation.
Classical they will emit electromagnetic waves (light and radio waves). Quantum effects might limit this since if the electrons are in the ground state (or all lower states are occupied) they can not emit any photons (quanta of electromagnetic waves).
Objects that emit light are usually referred to as incandescent.
Atoms emit energy as light when electrons move to a lower energy level
light and heat
Warm bodies emit infrared radiation.
heat/IR
Classical they will emit electromagnetic waves (light and radio waves). Quantum effects might limit this since if the electrons are in the ground state (or all lower states are occupied) they can not emit any photons (quanta of electromagnetic waves).
Light bulbs emit light.
Technetium doesn't emit light.
Yes galaxies emit light
bulbs emit light
The Earth does not emit light, it like the moon reflects light
The earth does not emit light, but it does reflect light from the sun.
Objects that emit light are usually referred to as incandescent.
infared radiation
Light waves do not emit radiation, light waves are radiation.