- Inside the mechanical Bendix Air Data Computer, part 5: motor/tachometers (righto.com)
The Bendix Central Air Data Computer (CADC) is an electromechanical analog computer that uses gears and cams for its mathematics. It was a key part of military planes such as the F-101 and the F-111 fighters, computing airspeed, Mach number, and other “air data”. The rotating gears are powered by six small servomotors, so these motors are in a sense the fundamental component of the CADC. In the photo below, you can see one of the cylindrical motors near the center, about 1/3 of the way down.
- Siege of Jerusalem (587 BC) (Wikipedia)
The siege of Jerusalem (c. 589–587 BC) was the final event of the Judahite revolts against Babylon, in which Nebuchadnezzar II, king of the Neo-Babylonian Empire, besieged Jerusalem, the capital city of the Kingdom of Judah. Jerusalem fell after a 30-month siege, following which the Babylonians systematically destroyed the city and Solomon’s Temple. The Kingdom of Judah was dissolved and many of its inhabitants exiled to Babylon.