Description
The phenomenon of Newton's rings, named after Isaac Newton, when viewed with monochromatic light, it appears as a series of concentric, alternating light and dark rings centered at the point of contact between the two surfaces.
Using this apparatus, students can observe the phenomenon of equal-thickness interference. By measuring interference fringe separation, the radius of curvature of the spherical surface can be calculated.
Specifications
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Description
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Specifications
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| Minimum Division of Reading Drum |
0.01 mm |
| Magnification |
20x, (1x, f = 38 mm for Objective; 20x, f = 16.6 mm for Eyepiece) |
| Working Distance |
76 mm |
| View Field |
10 mm |
| Measurement Range of Reticle |
8 mm |
| Measurement Accuracy |
0.01 mm |
| Sodium Lamp |
15 ± 5 V AC, 20 W |
| Radius of Curvature of Newton's Ring |
868.5 mm |
| Beam Splitter |
5:5 |