Laboratornaia Rabota 3 - Po Fizike 11 Klass Tikhomirova Iavorskii

A glass plate with parallel edges (or a prism), a piece of cardboard, pins (or a laser pointer), a ruler, a protractor, and a pencil. 1. Theoretical Background The refractive index (

Place the glass plate on a sheet of paper and trace its outline. A glass plate with parallel edges (or a

Mark a point on one edge where the light ray will enter. Draw a perpendicular line to the surface at this point. Draw an incident ray at an angle (e.g., 30∘30 raised to the composed with power 45∘45 raised to the composed with power ) to the perpendicular. Mark a point on one edge where the light ray will enter

Laboratory Work No. 3: Determination of the Refractive Index of Glass Laboratory Work No

In this lab, I determined the refractive index of glass by measuring the angles of light propagation at the boundary of two media. The results confirm that as light enters a more optically dense medium (glass) from a less dense one (air), the ray bends toward the normal. Potential errors in the experiment may arise from the thickness of the pencil lines or slight misalignments of the pins/laser.

). According to the , the ratio of the sine of the angle of incidence ( ) to the sine of the angle of refraction ( ) is constant for two given media:

Connect the entry and exit points to visualize the refracted ray inside the glass. Use a protractor to measure the angle of incidence ( ) and the angle of refraction (