Laboratory Work No. 3: Determination of the Refractive Index of Glass
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.
Repeat the measurements for different angles of incidence to ensure accuracy. 3. Data Analysis
Place the glass plate on a sheet of paper and trace its outline.
). 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: