if IR refers to Infrared light then, the most commonly used material in day to day life is the right material... Common salt-Sodium Chloride and few other chloride salts are IR -transparent.
KBr is transparent to IR radiation, most alkali halides are transparent in ir
KBr is used mostly in IR Spectroscopy techniques because it do not absorbs moisture at room temperature as compared to NaCl. More over it do not give its own peak.
nothing Anything that is transparent will have a refractive index. Glass is transparent to visible light and has a refractive index with it. Having these combined properties lets you make a lens for visible light out of glass. Now glass is transparent to IR radiation so any glass lens would focus IR radiation.
It is a spectra that shows how transparent a material can be. in scientific terms, it is incidence of electromagnetic radiation (from the UV, Visible, Infrared wavelength regions) from a source to a material, and there is a detector which records the amount of radiation remaining after the transmission (these radiation that is gone is either reflected of the surface or absorbed by the material). The equipment that measures this is called UV-Vis-NIR spectrometer.
Potassium bromide has transparent crystals in the range 0,25-25 μm; KBr is used in infrared spectroscopy.
KBr is transparent to IR radiation, most alkali halides are transparent in ir
a transparent material
KBr is used mostly in IR Spectroscopy techniques because it do not absorbs moisture at room temperature as compared to NaCl. More over it do not give its own peak.
It is refracted or 'bent' at the surface of the transparent material. (Obviously, to be directed at a transparent material the light must be travelling through a material that is at least partially transparent.) Please see the link.
Transparent
Yes, cling film is a transparent material.
shadow formed on the other side of transparent material
Water
transparent material.
Glass is the best example for transparent material.
glass
nothing Anything that is transparent will have a refractive index. Glass is transparent to visible light and has a refractive index with it. Having these combined properties lets you make a lens for visible light out of glass. Now glass is transparent to IR radiation so any glass lens would focus IR radiation.