Q&A for How to Make a Hologram

A hologram captures a representation of the light passing through the imaging plate on its way to the viewer. The hologram captures the light before it is focused, and thus contains information about the light from many points of view. The way this information is captured involves light wave interference patterns using lasers. The light wave interference pattern is recorded by the silver halide crystals.

You can't. D refers to dimension and we live in a 3-dimensional universe so a fourth dimensional hologram is impossible.

Yes, as long as you do everything else right. You should try using something else before, that way you can get the hang of it first.

A hologram would not actually work. The plate would need to be placed near the finger and the finger would have to be perfectly still, as any movement would distort the image. It is not possible for humans to be perfectly still, so the hologram on the finger would not work.

The subject can be made from metal, porcelain, or any other object that light can illuminate. As long as it doesn't move and isn't made of fabric or fur, it can make a clear hologram.

The image size may vary depending on the holographic plate. If you want a large hologram, buy a large holographic plate. Holograms can make an excellent school experiment for science classes as long as you take safety precautions.

The total cost to build a hologram ranges from $100-500 USD. If you want to build a hologram for the lowest cost, contact a professional holographer or holography supply store for advice.