exploratorium.edu

NXQoE TIL that the word 'eclipse' comes from the Greek word meaning 'abandonment'. This stems from their belief that eclipses were a sign that the gods were angry with humans and the Sun would abandon the Earth, bringing untold misery.
epBDk TIL that when floating ice melts, the water level actually stays the same. Apparently the difference in density between water and ice is exactly 1:1 to the percentage of the ice that floats above the water(aka is not displacing water)
WkewN TIL that when two light rays combine with each other crest-to-trough, they can cancel each other out. This cancellation results in darkness and is called ‘destructive interference’.