The stroboscopic effect is an optical illusion where a camera recording at a specific frame rate (e.g., 24 fps) captures a repeating motion at the same frequency as the motion itself, making it appear frozen in mid-air; when the motion frequency changes slightly (to 23 or 25 Hz), the same motion appears to flow backward or forward respectively, demonstrating how our perception of motion depends on the relationship between the actual motion frequency and the camera's capture rate.
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Gravity is working in reverse? ๐๐ง (Stroboscopic Effect) #scienceAdded:
This looks like gravity is working in reverse, but it's just an optical illusion called the stroboscopic effect.
A speaker vibrates the water hose exactly 24 times per second, forcing the water into a wave. The real [music] secret is the camera. It records at 24 frames per second. Because the camera speed and sound frequency match perfectly, the water appears [music] frozen in midair. When the frequency changes to 25, it flows forward. At 23, it literally flows backward. Subscribe for more mind-blowing science.
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