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The wagon-wheel effect (alternatively called stagecoach-wheel effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel can appear to rotate more slowly than the true rotation, it can appear stationary, or it can appear to rotate in the opposite direction from the true rotation ...
Depending on how far each spoke travels between the camera snapshots, the movement follows. If the inner wheel has a speed lower than 288 rpm (or 4,8 revolutions/second) it will seem to rotate backwards. The camera captured 24 fps. The first version of this video featured an incorrectly licensed piece of music.
It accounts for the "wagon-wheel effect", so-called because in video, spoked wheels (such as on horse-drawn wagons) sometimes appear to be turning backwards. A strobe fountain, a stream of water droplets falling at regular intervals lit with a strobe light , is an example of the stroboscopic effect being applied to a cyclic motion that is not ...
The qualitative effects of aliasing can be heard in the following audio demonstration. Six sawtooth waves are played in succession, with the first two sawtooths having a fundamental frequency of 440 Hz (A4), the second two having fundamental frequency of 880 Hz (A5), and the final two at 1760 Hz (A6).
Upsweep is an unidentified sound detected on the American NOAA's equatorial autonomous hydrophone arrays. This sound was present when the Pacific Marine Environmental Laboratory began recording its sound surveillance system, SOSUS, in August 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds in duration each.
The new CFPB regulation would require large banks and credit unions to either charge just $5 for overdrafts or, alternatively, pick an amount no higher than the cost of offering overdraft protection.
Metformin is a prescription medication used to treat high blood sugar in those with type 2 diabetes who are resistant to the effects of insulin. It’s in a class of drugs known as biguanides.
"Wagon Wheel" is a song co-written by Bob Dylan, and Ketch Secor of Old Crow Medicine Show. [2] Dylan recorded the chorus in 1973; Secor added verses 25 years later. Old Crow Medicine Show's final version was certified Platinum by the Recording Industry Association of America in April 2013.