Hologram: Illuminating the Invisible
This hologram shows temperature variations generated from a heat source, in this case a light bulb filament. Only holography can show this effect, normally invisible to the naked eye, by capturing microscopic differences in the density of air. An example of Holographic Interferometry.
Multicolour Reflection Hologram Interferogram, 2 colour black and white with blue fringes
8″ X 10″