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TIL Allvar Gullstrand applied the methods of physical mathematics to the study of optical images and refraction of light in the eye and received the Nobel Prize in Medicine in 1911. Due to the math in his works, it is lamented there are few ophthalmologists and physiologists who can understand it

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nW86r TIL about the “Tetris Effect” where after playing a video game for significant amount of time, a person can experience altered thoughts, dreams and experiences in their real life.
Y7ZWG TIL that Alexei Nikolaevich, son of the last Russian tsar and heir to the throne, had a severe case of hemophilia inherited from his mother, which in turn she had acquired through the line of her maternal grandmother Victoria of the United Kingdom.
woOoE TIL that the Portsmouth Naval Ship Yard isn't in Portsmouth. The Norfolk Naval Ship Yard isn't in Norfolk, either; it's in Portsmouth
wLKW8 TIL Scotland has the highest percentage of cocaine usage in the world with around 1 in 40 scots using the drug.
Z8DBR TIL guards of the Tomb of the Unknown Soldier wear specially manufactured Oakley sunglasses to protect from the glare of the marble, and are the only military personnel to wear sunglasses as part of their official uniform.