The existence of the wax motor. It is not a motor with rotating parts but a linear actuator that expands and contract by heating or cooling wax. It is mainly used to control a valve that needs to move slowly without rotating parts. en.wikipedia.org/wiki/Wax…
In the 90s, Conner Peripherals created a dual-actuator drive for a single platter of drives that doubled read/write times. en.wikipedia.org/wiki/Con…
Today I learned of wax motors, a kind of linear actuator that uses the power of expansion (of wax) when heated to push (or pull) something with a great force and without noise. youtube.com/watch?v=sApyr…
There exists an electrothermal linear actuator called a wax motor en.wikipedia.org/wiki/Wax…
There is Porn 2.0 and Porn 3.0 (the usage of 3D stereoscopy, multi-angle DVD, neural impulse actuators, and peripheral controller and devices, similar to game controller vibration). en.m.wikipedia.org/wiki/P…
From 1996-2000, a group of students at MIT made and wrote multiple papers about a robotic flamingo. Dubbed the "Spring Flamingo", it was made to teach them complex robotics and show how feet and actuated ankles helped bipedal walking ai.mit.edu/projects/legla…
The tiny plastic dome mounted near the bottom of the windshield is a sunlight sensor. It can actuate a vehicle’s daytime running lamps, signal the instrument panel to illuminate or even regulate climate control, depending on the vehicle. cars.com/articles/2006/08…
The Great Stalacpipe Organ used Virginia's Luray Caverns to produce music by striking the cave's stalactites with solenoid-actuated rubber mallets to produce sound. The organ can be heard anywhere within its 64-acre (260,000 m^2) confines en.wikipedia.org/wiki/The…
There is a German engineering company named Festo that designs swimming underwater robots that replicate the movements of animals using a "fluidic muscle." They have working models of a penguin, a ray, a gull, and a flying manta ray blimp. youtube.com/watch?v=u8tfE…
Blowing smoke over a running HD will cause the drive to fail pctechguide.com/hard-disk…

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