The Red Rectangle is only one example of an infrared object that is detectable in the infrared because of grain emission.

Hertzian wave

the grand pillar and buttress of the good old cause of nonconformity

From the point of view of many late Ming and Ch'ing scholars, the most syncretic, as well as the most threatening heretic of all was a nominal Confucian, Wang Yang-ming (1472-1528).