Open Physics Sims
Thin-film interference
1
Soap film
2
Oil on water
3
Lens coating
4
Air wedge and rings
How to use it ↓
Pause
dip the loop again
real speed
4× faster
mystery spacer
reveal the spacer
click or drag on the picture to move the probe
Light
daylight
one color
Wavelength (one-color light, and the waves in the diagram)
Oil thickness in the middle
Oil's refractive index (water's is 1.33)
Coating thickness
Coating's refractive index (glass is 1.52)
Setup
air wedge
Newton's rings
Spacer thickness
Lens's radius of curvature
Viewing angle, from straight on
fill the gap with water