Embedded Files
How does the 3D projector work ?
How does the 3D projector work ?
First, what is holography?
First, what is holography?
Everyone has seen a hologram before, for example, on a 5-euro note. There is a line on the right with the value of the note. When you move the banknote, the value changes into a euro sign and vice versa. This also immediately demonstrates what a hologram is: an image that changes when you look at it from a different angle.
Because of this change, a hologram often appears to be three-dimensional.
How does the projector work?
How does the projector work?
Light is reflected (bounced back) by a smooth mirror surface.
The angle at which light is reflected is the same as the angle at which the light hits the surface.
A mirror reflects all the light. A transmissive material, such as sheet paper, reflects part of the light and also allows some of the light to pass through.
This creates a virtual image (a 3D image).
Assignment:
Assignment:
Click here to find the instructions of how to make a 3D projector with sheet paper.
More information can be found at:
http://www.explainthatstuff.com/holograms.html
Nice Telfort movie about personal trainer with 3D projection.
https://www.youtube.com/watch?v=je_HVy64O3s
Report abuse