A Memory of Light

Light Transfer

There are three things that can happen to a light wave. It can be reflected, absorbed, or transmitted. This is determined by the object that the wave hits, and that will give it its color. For an object to be black, it means that all the wavelengths of light hitting that object are absorbed; no light is reflected. Solid objects, for the most part, will reflect light, and transparent objects will transmit light through them.

Color from Light
The color of anything depends on the type of light sent to our eyes; light is necessary if we are to have any perception of color at all. An object is "colored," as stated above, because of the light it reflects—all other colors are absorbed into that specific object. So then, an apple appears red because it reflects red light.(Source)

Holography is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the recording medium as it was when recorded. (Source)

Thoughts:
It's amazing the crucial role light plays in our life. It determines the colors we see, when we can see and yet we cannot see it directly. Holograms are particularly fascinating because they represent a moment of time in light, in which the light reflected from an object is recorded and made eternal. What we see is not the light itself, but a memory of the light, in which we can use to experience times that have past or apply them to experiences of the present through interaction.