A more Detailed Explanation on This Opticall Illusion on
Optical Illusions & Visual Phenomena
in the meantime:
What to do & see
If you have two roughly equivalent eyes you will see a ‘sausage’ floating in front of you in mid air, by following these steps:
- Hold your hands in front of you, at 20–30 cm distance from you, at eye level.
- Point your index fingers against each other, leaving about 2 cm distance between them.
- Now look “through” your fingers, into the distance behind them.
- The sausage should appear now, and you can change its length by varying the distance between the finger tips.
- For most observers, the sausage will look blurred, at least initially.
- If you try to look at the sausage, it will disappear, it is only present if you look at something more distant than your fingers.
- It helps if the background is rather homogenous and has a color very different from your fingers.
