Late eighteenth century, Department of Natural Philosophy at the University of Aberdeen, The lens at the front and a screen at the rear display the upside-down image as it appears on the retina of a real eye.
1942 World War II Centerville, California -This youngster is awaiting an evacuation bus. Evacuees of Japanese ancestry were housed in War Relocation Authority Centers for the duration of the war. Photographer Dorothea Lange, May 9, 1942.
Helen Richey was Amelia Earhart's copilot on one flight across the Atlantic. She became the first woman hired to be a pilot by a commercial airline in the US. She was the first woman licensed as an aviation instructor. She was the first woman to fly a scheduled mail flight. During WWII she commanded a group of women pilots for the British Air Transport Auxiliary, flying bombs between factories and airbases. She died by suicide at age 38