Demo Number 263
Location Shelf 40
Description Use these glass plates to view the “wedge fringes” of interference. Works well viewing the reflection of a diffuser that’s back lit by the sodium lamp.
 Related Demos 269
  • Allow sodium lamp to warm up for at least 5 minutes. Fit diffuser over sodium lamp and clean glass plates with lens wipes. To view fringes, the plates may actually have to be squeezed together slightly to make a narrow enough gap to view wedge interference fringes.
  • Sodium lamp (with diffuser) Demo 269 shelf 46.

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This Demo is Part of the following Categories: 6A40 Refractive Index