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109

TIL LCD screens are polarized

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JYvyB TIL that chlamidial cells are strange organisms closely related to blue-green algae that have DNA like bacteria but can only reproduce parasitically in foreign cells like a virus.
Av5a TIL that there is a Scottish tartan designed for Mars exploration
W7erN TIL Trailerizing is the common technique where movie trailers use an old pop song and keep the lyrics, but make it slower and moodier. Viewers, otherwise disengaged, will be pulled in to the new movie trailer by the familiar lyrics
D1lKg TIL that the first "phone book" contained no phone numbers and wasn't a book. It was a sheet with the names of 50 people and businesses in New Haven, CT that owned a telephone
QNXl9 TIL that Andrew Jackson became the first U.S. president to be subjected to both a physical assault and an assassination attempt. In 1833, Robert B. Randolph struck Jackson in the face with his hand, and in 1835, Richard Lawrence pulled two pistols on Jackson, both of which misfired.