トリックなし！水注ぐと矢印が反対にReverse Arrow Optical Illusion

用意するのは紙、ペン、水、グラス。紙に矢印を書き、グラスの後ろに置く。

そのグラスに水を注ぐ。ただこれだけの作業で不思議な現象が発生。

妙な仕掛けは一切なし、と聞いても何度も見返したくなる不思議映像です。

Very easy illusion to do at home trying it yourself.

When the arrow is moved to a particular distance behind the glass, it looks like it reversed itself. When light passes from one material to another, it can bend or refract. In the experiment that you just completed, light traveled from the air, through the glass, through the water, through the back of the glass, and then back through the air, before hitting the arrow. Anytime that light passes from one medium, or material, into another, it refracts.

Just because light bends when it travels through different materials, doesn’t explain why the arrow reverses itself. To explain this, you must think about the glass of water as if it is a magnifying glass. When light goes through a magnifying glass the light bends toward the center. Where the light all comes together is called the focal point, but beyond the focal point the image appears to reverse because the light rays that were bent pass each other and the light that was on the right side is now on the left and the left on the right, which makes the arrow appear to be reversed.

Music:
Free Production Music by Jason Shaw
Music name: Namaste
Site:
http://www.audionautix.com
http://www.audionautix.com/Saved/CCre…