Holograms in reality

Till now, we have mentioned Hologram several times. It is evident that these are crucial for HoloLens and Holographic apps, but what is a Hologram?

Holograms are the virtual objects which will be made up with light and sound and blend with the real world to give us an immersive MR experience with both real and virtual worlds. In other words, a Hologram is an object like any other real-world object; the only difference is that it is made up of light rather than matter.

The following figure represent two holographic objects placed on the top of a real-size table and gives the experience of placing a real object on a real surface: