Tag: Pierre Janssen

This day in history we feature Helium. French astronomer Pierre Janssen discovers helium on this day in 1868. Trivia – Helium Helium was discovered in the gaseous atmosphere surrounding the Sun by a bright yellow line in the spectrum of the solar chromosphere; this line was initially assumed to represent the element sodium. The line […]

Max Factor Jr., CEO of Max Factor Cosmetics and son of the founder and inventor Max Factor, was born on this day in 1904. Did you know that: • French Astronomer Pierre Janssen discovered helium in the solar spectrum during an eclipse on this day in 1868• A weather map was televised for the first time […]