Translucent Objects. A substance is called translucent if it allows partial transmission. The light rays get scattered in the interior of such objects. Consequently, the light rays emerge out at random directions. If any object is seen through a translucent material, the image appears fuzzy or blurred. Translucency can occur due to the following properties,. Non-uniform Density: If a material has a non-uniform distribution of matter, its density is different at different parts. Such density distribution can result in irregular refraction and transmission.
Density fluctuations may cause scattering centers. At the points of fluctuations, the light rays get scattered. Crystallographic Defects: Defects e. Boundaries: Grain boundaries in a polycrystalline structure and cell boundaries in an organism can behave as scattering centers.
Some examples of translucent objects are frosted glass, butter paper, tissue, various plastics, and so on. Opaque Objects. Opaque substances do not allow the transmission of light. Any incident light gets reflected, absorbed, or scattered. Light rays can penetrate the substances to some depth. Floris Floris k 12 12 gold badges silver badges bronze badges. All your 4 questions are related, and I added [0-] to the statement in your premise: Photons in all frequencies hitting an object are absorbed in different ways absorbed, reflected, refracted, scattered, transtormed into thermal energy by the atoms , not only [0-] by the electrons.
I hope I covered all aspects of your doubts. Ignacio Vergara Kausel Ignacio Vergara Kausel 2, 1 1 gold badge 17 17 silver badges 20 20 bronze badges. Community Bot 1. Nikos M. Of course x rays penetrate more than visible light but at every energy there is a probability of interaction between electrons and photons. At lower energies, photo-electric effect dominate below say 80 keV although it depends on the atomic number.
At intermediate energies it is Compton scatter; and above 1 MeV pair production starts to play. So it depends on your definition of "transparent" I suppose. See XCOM database nist. I think we we're just working with a different definition of transparency. Show 3 more comments. Sign up or log in Sign up using Google. Sign up using Facebook.
Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. Featured on Meta. Each boundary tends to diffuse the light that passes through; if the regions are small enough, however, the light waves essentially 'jump' right over them. It has no internal grain boundaries, and hence it looks transparent. Solid silicon dioxide sand , in contrast, has obvious grain boundaries, so it is not transparent. One way to do this is to press a material under force, as is done all the time with potassium bromide, a compound used for infrared spectroscopy in laboratories.
The other way to achieve uniformity is to create lots of nucleation sites the locations where crystals begin to form in a melted material and then allow it to cool.
Because many little crystals begin to form all at once, none of them can grow very large before they run into one another. The transparent Corningware sold today is made in this manner. It has the transparency of glass, but it is really a ceramic material similar to regular Corningware. Newsletter Get smart. What made that happen? Do you ever wonder why some objects let light through while others don't? Translucent Materials Sometimes light can shine through materials that aren't really clear.
These materials are translucent. A translucent material allows light to pass through, but prevents the light from forming images. The object scatters the light when it enters. When the light is scattered, the image looses its sharpness. Top of Page. Opaque Materials Light cannot shine through opaque materials at all. In fact, opaque materials absorb the light that shines on them.
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