Product Description:
The phenomenon of Newton's rings, named after Isaac Newton, is an interference pattern caused by the reflection of light between two surfaces - a spherical surface and an adjacent flat surface. 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.
Experiments:
● Observe the Newton's ring interference phenomenon, and get familiar with the experimental equipment
● List the measurement data and learn how to reduce the systematic errors
● Understand the principles of the Newton's ring experiment and master the concept of its interference
● The basic principle of determining the radius of curvature of a convex lens by using a Newton's ring
Specifications:
| 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 |
