Dogs Teaching Chemistry

Robert Cornelius

This self portrait is thought to be the first portrait photograph of a human…

Robert Cornelius took it outside of his family’s Philadelphia store in October or November 1839.

Happy 200th birthday, Robert Bunsen

Today (or possibly yesterday) is the bicentennary of German chemist Robert Bunsen‘s birth. Google has commemorated the day with an interactive, animated doodle – the horizontal position of the your cursor controls the air opening, the vertical the gas flow to the laboratory burner for which he is most well known.