Any material will emit blackbody radiation at any temperature. Lithium 6 will never emit ionizing radiation.
ANY material will emit radiation at ANY temperature.
cool down to the temperature of its surroundings slowly
All objects and living things emit infrared radiation unless the object is not a black hole as well unless its temperature is not at the Absolute Zero ( I would call it an "infrared black hole") - such an object can only absorb infrared radiation.
Warm bodies emit infrared radiation.
Nuclear weapons emit nuclear radiation, with gamma radiation being the most common and dangerous.
It isn't clear what sort of radiation you are talking about. If you mean infrared radiation, if the temperature is the same, darker objects do tend to emit more radiation.
Release its heat energy until the object (system) and the surroundings are the same temperature.
Increase
anything hotter than absolute zero temperature
They do not! Most gases do not emit radiation.
Light waves do not emit radiation, light waves are radiation.
Then it will not emit any more radiation - except that it will eventually re-emit any radiation it receives, especially the cosmic background radiation.Then it will not emit any more radiation - except that it will eventually re-emit any radiation it receives, especially the cosmic background radiation.Then it will not emit any more radiation - except that it will eventually re-emit any radiation it receives, especially the cosmic background radiation.Then it will not emit any more radiation - except that it will eventually re-emit any radiation it receives, especially the cosmic background radiation.
cool down to the temperature of its surroundings slowly
Anything that has a temperature emits IR radiation. Hotter things emit more at a higher frequency. Then they become Red.
All objects and living things emit infrared radiation unless the object is not a black hole as well unless its temperature is not at the Absolute Zero ( I would call it an "infrared black hole") - such an object can only absorb infrared radiation.
Warm bodies emit infrared radiation.
They emit infrared radiation
Nuclear weapons emit nuclear radiation, with gamma radiation being the most common and dangerous.