That's an archaeologist! :3
I might hypothesize that very colorful objects are easier to remember than blandly colored or black and white objects. Possibly a flash card type test could be used to investigate the hypothesis.
Poltergeist are invisible forces, aka "ghosts", that produce noises and move objects through the air.
It is the light reflected from them that enables us to see objects.
Light emitted or reflected by objects in the surroundings causes reactions in the rod and cone cells in the retina. These reactions send electrical impulses to the brain, which interprets them as an image.
Yes; what we see as the colour of an object is the light that it has reflected or re-emitted. "White" objects reflect all wavelengths of light evenly, while black objects absorb all of it.
I still want barbecue
No, not objects that are opaque.
What we perceive as color is specific wavelengths of light. Objects either emit or reflect light. Again depending on which wavelengths are either emitted or reflected is the color(s) we see. In emitted colors, a given source emits light. If all wavelengths are emitted then what we see is white. The object may emit specific wavelengths of light or it may use some sort of filter that allows only specific wavelengths to pass through and blocks all others. In reflected colors. the object or pigments of or on an object absorb all light wavelengths except certain ones. Those that are not trapped and are reflected or refracted back (as in the case of rainbows) we perceive as color(s).
Light that bounces off objects is said to be reflected by those objects.
To experience lightness constancy, it is necessary to view the light reflected by any object relative to the light reflected by surrounding objects. Lightness constancy is defined as the tendency to perceive little variation in the lightness of objects.
Sonar is the technique of listening to sounds underwater to detrmine what is there. In passive sonar, objects not generating any sound will not be detected. Active sonar means that sound waves are generated and emitted. The device then listens for the sound being reflected back. That detects objects such as obstructions/rocks as well as other boats or underwater objects. The reflected wave is measured and the time delay noted as well as the direction of the reflected sound wave. These give the user a very good idea of the type, size as well as speed of the object.
Objects in space that can only be viewed from earth becouse of reflected light energy are said to be
In order to see, the eye must receive light; and darkness is the absence of light. Most of the objects we see around us are visible by reflected light -- reflected sunlight or reflected artificial light. Since darkness is the absence of light, there is no light in the darkness to be reflected from chairs, tables, or people to our eyes, and therefore we can not see these objects.