LECTURE DEMONSTRATION MANUAL | Instructional Research Lab : ucla physics
Absorption of Sodium Light

0.4.4 Absorption of Sodium Light

A sodium lamp is arranged to shine on a rear projection screen. An ordinary flame, say of a match or Bunsen burner introduced between the lamp and the screen will not cast a shadow, but if a wire or stick dipped in salt solution is placed in the flame, a dark shadow of the flame appears.

Back Up Next