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The woman who found out what are the stars made on

American astronomer Cecilia Payne-Gaposchkin died. She was the first who applied the brand-new laws of atomic physics to the study of the stars. She discovered that stars are made approximately from ninety-nine percent of hydrogen and one percent of helium. Hydrogen and helium are two lightest and simplest elements.

Gyrostabilized ship

Italian steamer SS Conte di Savoia anchored in New York. She was the first transatlantic liner fitted with gyro-stabilizers. This device made the ship more stable in the water, so the passengers did not suffer seasickness or suffered it to the lesser degree. The cruise was, however, not as comfortable as intended.

Pioneer child psychologist is born

American psychologist Eleanor Gibson is most famous because of an experiment called “the visual cliff.” Gibson placed a toddler on a table covered with a sheet of plate glass that extended beyond the table's edge. Then she showed the baby his favorite toy to attract him beyond the table's edge. The babies stopped before the glass.

Early plastic

Belgian-American chemist Leo Baekeland patented one of the first plastics, the Bakelite. It was non-conductive and heat-resistant. It was used in radio and telephone casings, toys and various other products. Some designers made even jewelry from it. The Bakelite gave birth to the new plastics industry.

Anniversaries of the (in)famous