3 ms·
Right. We can't concentrate light brighter than it is on the surface of the Moon HOWEVER, because the light's effective temperature is much higher than the temp
by Robotbeat 8y ago
Right. We can't concentrate light brighter than it is on the surface of the Moon HOWEVER, because the light's effective temperature is much higher than the temperature of the Moon itself, we CAN use frequency-selective filters to heat up a sample, in principle to the point of combustion. Thermodynamics allows this. Basically, the greenhouse effect.