Actually, we do, so long as that energy is in the form of photons [1].
[1] http://www.nature.com/news/people-can-sense-single-photons-1...
Of a particular range of frequencies
Actually, we do, so long as that energy is in the form of photons [1].
[1] http://www.nature.com/news/people-can-sense-single-photons-1...