Stepper Motor Organ This is an experimental instrument I built that uses back-driven stepper motors to synthesize sound. The operational principle is that when stepper motors are back-driven, they induce a pseudo-sinusoidal alternating current. If this signal is amplified and connected to a speaker, you can listen to it as sound. The pitch of the sound is determined by the frequency of the wave, which depends on how fast the motor is back-driven. Higher speed will be a higher note. I thought this sound was interesting, so I wanted to make an instrument that used this mechanism to make music.
An RC aircraft flying at 744 km / h World record in RC speed flight. Radio controlled Turbine Model Jet flies 744 kmh (462 Mph). The Pilot is Niels Herbrich. The flight is amazing and very very fast. The Model has a weight from 7,5 Kg and flies with kerosene. Turbine is a Behotec 180. The Jet is the world's fastest RC model turbine jet currently. Enjoy watching.
“A Reasonable Speed” with Jimmy Kimmel and Keanu Reeves Keanu Reeves has a new movie called “Knock Knock” that is coming out soon, but after that he has an even bigger movie that we believe is going to give the Fast and Furious franchise a real run for it’s money. Please enjoy this exclusive trailer for his new film.
Karma catches up to motorcyclist weaving through traffic Guy survives with a only a broken wrist but his bike is disintegrated. There were several problems with this situation, the Motorcyclist was going way too fast for traffic conditions and the Red car didn't signal while changing lanes and seems not to notice the Motorcycle coming up behind it at a high rate of speed. Sad, this type of rider gives those of us who ride everyday a bad name and many people in cars don't look or signal before changing lanes.
Furious 7 Official Super Bowl TV Spot (2015) Continuing the global exploits in the unstoppable franchise built on speed, Vin Diesel, Paul Walker and Dwayne Johnson lead the returning cast of Fast & Furious 7. James Wan directs this chapter of the hugely successful series that also welcomes back favorites Michelle Rodriguez, Jordana Brewster, Tyrese Gibson, Chris “Ludacris” Bridges, Elsa Pataky and Lucas Black. They are joined by international action stars new to the franchise including Jason Statham, Djimon Hounsou, Tony Jaa, Ronda Rousey and Kurt Russell. Neal H. Moritz, Vin Diesel and Michael Fottrell return to produce the film written by Chris Morgan.
Fast 2WD Electric Bicycle Fast custom built 2 wheel drive electric bicycle by CORBINFIBER electric cycles. capable of high speeds on level roads with 37 mile range. Charge time is 2 hours.
A good road safety video Good little prevention video which reminds us that driving very fast in a car, to the point of speeding, hardly saves any time.
One of the biggest computational fluid dynamics simulation made on a super computer This is one of the largest CFD simulations ever, on the world's largest GPU server, the GigaIO SuperNODE, equipped with 32x AMD Instinct MI210 64GB GPUs, for a total of 2TB of VRAM. The simulation shows the Concorde (62m long) before landing at a speed of 300km/h and an angle of attack of 10°, for 1 second in flight. The span-based Reynolds number is 146 million.