![]() Green light is reflected by the grass and detected by our eyes. Consequently, the light energy is not to be seen again, that is why absorption differs from reflection and transmission and since different atoms and molecules have different natural frequencies of vibration and thus energy is generated, they selectively transmits different visible lights of different frequencies.įor example, grass appears green in white light: red, orange, yellow, blue, indigo and violet (such colors are absorbed) by the grass. During this vibration, the electrons of the atoms interact with the neighboring atoms and this vibrational energy convert into the thermal energy. When light interacts with an atom of the same frequency, the electrons of the atom becomes excited and start vibrating. All electrons vibrate at a specific frequency, which is known as the “natural” frequency. The absorption of light depends on the state of an object’s electron. If they are complementary, light is being absorbed. Thus, we can say that the absorption of light is directly proportional to the frequency. Absorption of light depends on the electromagnetic frequency of the light and object’s nature of atoms. Light absorption is the process by which the light is being absorbed and converted into energy. The transmittance of the material depends on its thickness, but it also depends on the type of the light (or electromagnetic waves) that we are using. So, we could say that the glass block has a transmittance of 20%. That leaves the material with 20% that emerges from the opposite side. Another 50% of the light is absorbed by the molecules inside the glass block itself. This leaves it with 70% to continue through the glass block. The first thing that happens is that 30% of that light is reflected off the outer surface of the glass. We start off with 100% of our incident light. The transmittance of a material is the proportion of the incident light that moves all the way through the other side.įor an example, let’s us say that we’re shining a flashlight on a semi-transparent glass block. When the light waves moves through a transparent (or semi-transparent) material, it can be either transmitted, absorbed, or reflected. Transmission of light happens when light waves move all the way through a piece of material without being absorbed. ![]() Diffuse reflection is however when light illuminates a dull object. Specular reflection is when the light reflects off of a shiny surface like a mirror. ![]() Reflection of light happens when light bounces off of a surface. When we shine light on an object, a number of the things can happen. ![]() But, in physics, light can refer to any kind of electromagnetic wave i.e radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, or gamma rays. Without it, we’d be unable to see in darkness. Transmission of light moves as sea waves, bouncing off objects so we can see them. Visible light is the cause we are able to see anything at all. The transmission of Light is defined as the moving of the electromagnetic waves through a material. ![]()
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