re-emission
noun [ C or U ] physics specialized (also reemission) uk/ˌriː.ɪˈmɪʃ.ən/ us/ˌriː.ɪˈmɪʃ.ən/
（气体、热量、光线等）再发射
the act of sending out gas, heat, light, etc. for a second, third, etc. time, or an amount of gas, heat, light, etc. that is sent out for a second, third, etc. time
The blinds are positioned away from the occupants to reduce re-emission of heat and allow diffuse daylight to enter the building.
A resonant photon can escape only after several absorptions and reemissions if the plasma has a finite optical thickness for it. 如果等离子体有一个有限的光学厚度，一个共振光子只要经过几次吸收和再发射后就能逃逸。
- More examples
- In the experiments, we found a carbon reemission that is 5% of the gold reemission.
- Higher re-emission and conversion efficiency of laser light to X-ray can be achieved with such mixtures.
- At the same time, re-emission of absorbed x-rays may also occur.
- The first contribution is due to absorption of photons from the incident field and the second one due to their spontaneous re-emission along any direction.