History from the year 1900
Escalator invented by Charles Seeberger.
Paperclip patented by Norwegian Johann Vaaler.
Loudspeaker invented by Horace Short.
Charlotte Cooper becomes the first woman to win an Olympic gold, for tennis.
Max Karl Ernst Ludwig Planck, in a lecture to the German Physical Society, announces that matter absorbs heat energy and emits light energy discontinuously, giving birth to quantum mechanics.
