Year 8 Physics. Investigating the Refractive Index of a Glass Block.

Practical exercise.

Our Method:

We placed a glass block onto a plane piece of paper, and shone a laser light ray through it at 3 different angles.

On each ray we marked two crosses, removed the block after drawing around it, and drew the rays.

Next we measured the angles of the incident rays, i and the refracted rays, r.

Just like here in the photo:

What we found:

If we took the sine of each angle.  sin i divided by sin r, we got 1.43.

This is the Refractive Index (RI) of the block!!!!