![]() Once the outline of the rectangular glass slab is drawn on the piece of paper and the pins removed, a number of steps are carried out which, in most descriptions of the experiment, require the measurement of angles with a protractor. The line joining these latter pin holes indicates the path of the ray leaving the glass slab and is known as the emergent or exiting ray. The other pair of pins is placed in line with the first pair of pins when viewed through the opposite face of the glass slab. ![]() ![]() This line indicates the path of the ray entering the glass slab and is known as the incident ray. One pair of pins is inserted in the piece of paper so that a straight line drawn through the pin holes makes an angle (not a right angle) to one face of the glass slab. The glass slab is placed on a piece of paper which lies over some material like cork or corrugated cardboard into which pins can be readily inserted and removed. One of the classical and least costly experiments performed by students for estimating the refractive index (RI) of glass using a rectangular glass slab without the use of a light box or laser light uses two pairs of pins.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |