This Gear Will Never Turn

Well, for certain values of “never;” the device in question includes a Googol-to-one gear ratio. It’s a sequence of 100 gears, each with a 10:1 ratio to its neighbor.

In the “similar prior art” department, turns out this guy was inspired by a Arthur Ganson’s sculpture “Machine with Concrete,” which includes a sequence of gears and a drive shaft, with the gearing such that the final step is literally embedded in concrete — which is fine, because that particular part turns 1 time every 2 trillion years.

Both links feature video fo the machines in question.

The Importance of Relative Velocity in Military Aviation

Recently, a Dutch F-16 managed to shoot itself with its own gun during maneuvers.

The rounds have a muzzle velocity of 3,450 feet per second (1050 meters per second). That is speed boosted initially by the aircraft itself, but atmospheric drag slows the shells down eventually. And if a pilot accelerates and maneuvers in the wrong way after firing the cannon, the aircraft could be unexpectedly reunited with its recently departed rounds.

Click through; this is also not the first time something like this has happened. In fact, the first time was in 1956.

Also hilarious: the gun in question, a 20mm Vulcan cannon, can fire 6,000 rounds a minute — but the F-16 only carries 511 rounds, or about 5 seconds of fire.