Eye is sensitive to -λ of 400nm(violet)- 700nm(red).

Eye is most sensitive to light in green-yellow region(550nm)

Exceptionally sensitive scientific instrument that measures intensity and wave length of light

Change in length per unit length of a material when its temperature is raised 1˚k. (μm/m˚k)

Certain metals develop a thin ,adherent, highly protective film by reaction with environment

Corrosion resistance is very important consideration dental alloys because release corrosion products affect

An important type of E-C corrosion occurring when combinations of

Disintegration of a metal by corrosion may occur in mouth because of

The process by which a metal surface is dulled or discolored when a reaction with a sulfide ,oxide, chloride, or other chemical causes a thin film to form