› added 10 years ago

140

TIL An “ultracrepidarian” is somebody who gives opinions on subjects they know nothing about.

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PY6QJ TIL Archduke Ferdinand survived an initial assassination attempt on the day he was killed when a grenade bounced off his convertible. He escaped unharmed, but later wanted to visit the wounded and that is when his car stalled next to one of the assassins, who happened to be nearby.
QJjWe TIL The Speed Of Light Filmed At 10 Trillion Frames Per Second Can Be Measured In Picoseconds In Order To See Light Moving. 1 Picosecond To A Second Is The Same As 1 Second To 31,689 Years.
7kAx TIL the assassin bug wears its victims’ corpses as armor
GEdg TIL 80% of the SR-71 Blackbird’s thrust at Mach 3.2 was generated from its ability to harness energy from the shock waves it created, thanks to special retractable spikes in front of its inlets. Its engines generated the other 20% of thrust.
JYGN1 TIL that metal blade of a Guillotine weighs about 88.2 lbs.