/sci/ - Science & Math

>>8462236
The sci-fi conception of holograms, that is images floating in mid air is impossible without
A) modifying the properties of air, ie with smoke/vapor
B) ionizing air with lasers to make it glow

A) suffers from bad image quality, as air currents disrupt the modified air.

B) requires a big dangerous laser that can blind you, requiring that one wear goggles. In addition, ionizing air creates air pollution in the form of ozone and NOx. Plus the only colors you can do are blue.

You can make a simple 2d version of A) in your garage using some fans, straws, a projector and ultrasonic foggers