Not exact matches
Instead, researchers want to look
at the effect of magnetism
on certain wavelengths of infrared light emitted by the corona.
(Paint becomes transparent
at certain wavelengths, depending
on what it's made of.)
The crystals reflect light
at a
certain wavelength depending
on their spacing, so the relaxed gel appears green, but squeezing or stretching it turns it blue or red.
The point you raise is any molecule [including gas molecules] can absorb [
at certain wavelengths] and re-radiate energy [
at same or different
wavelengths depending
on molecule] and not heat up a body of gas, liquid, or solid.