These Arrows Actually Point the Same Way, But Neat Trick Reverses One [VIDEO]
Mar 19, 2014 23:35
This simple experiment shows how you can make it seem as though the arrows on a piece of paper move in the wrong direction. This is the result of refraction - as light passes through the glass, its speed changes and it refracts, slightly changing directions.
The light eventually meets at a focal point outside the glass and changes directions, resulting in a flipped image.
