Ask Question. Asked 8 years, 9 months ago. Active 5 years, 5 months ago. Viewed 3k times. Improve this question. Dominik Dominik 4 4 silver badges 10 10 bronze badges. It also matter on which object the light is bouncing off. If its non metallic light will be bounced off in all directions. Stroker: Not true. Consider light reflected from a polished plastic surface or a glass window.
Pretty much all materials have diffuse and specular components, and the mixture is a function of wavelength. That's why researchers model materials with a complex BRDF distribution function.
Check out graphics. I think we better just leave this here. Better to not play ping pong with another site. There are certainly valuable answers that relate to photography for this question, and those could be of value to our community.
Emitted light will have dark bands on the absorption frequencies of the material. Reflected light does not affect absorption bands, keeping whatever is there from the emitter. Add a comment. Active Oldest Votes. Improve this answer. Michael Nielsen Michael Nielsen This answer refers more to the differences in area of the sample rather than the nature of the eminent electromagnetic radiation the light.
There are specular emitters and reflectors. There are diffuse emitters and reflectors. Reference to the action of the eminent is also not part of the discussion about the difference but of our manipulation of it into meaningful imaging. Detailed research on the nature of the surface is not discussing the nature of the light itself.
No, light is still light, it doesn't get different just because it is reflected. Guffa Guffa When light reflects off a material denser say glass than the external medium say air , it undergoes a polarity inversion.
True, light is still light, but I think the notion of polarization is key. Otherwise the polarity doesn't make a difference. We call the reflection from a smooth, mirror-like surface specular as shown in Figure 2a. When the surface of water is wind-blown and irregular, the rays of light are reflected in many directions.
The law of reflection is still obeyed, but the incident rays Fig. Consequently, the outgoing rays are reflected at many different angles and the image is disrupted. Reflection from such a rough surface is called diffuse reflection and appears matte. In both cases the angle of incidence equals the angle of reflection at the point that the light ray strikes the surface. Light is also reflected when it is incident on a surface or interface between two different materials such as the surface between air and water, or glass and water.
The laws of reflection are obeyed at all interfaces. The amount of reflected light at the interface depends on the differences in refraction between the two adjoining materials.
Allow cookies. Reflected light consists of photons whose origin is elsewhere but reflected scattered from some object. Light falling upon matter can be absorbed, reflected, or transmitted meaning that the light and matter interact very little - the matter is transparent , or often some combination. Each atom e. Thus we can identify the elements and molecules in some material simply by studying the wavelengths of light that are absorbed or emitted.
If the light passing near the atom or molecule hasn't the right energy to be absorbed, there is a chance that it might just scatter or bounce off one of the bound electrons, sending the photon off in some semi-random direction. Because the cones' sensitivities overlap in wavelength, any colored source of light will appear white if it is intense enough all three cone types will be fully activated. It is also true that the cones are insensitive to low light intensities; the least sensitive blue cones stop reacting first, followed by the red ones, then the green ones, as the intensity of light diminishes.
So very dim sources of broad spectrum light will appear dull white or grey.
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