The phenomenon of Newton's rings, named after Isaac Newton, is an interference pattern caused by the reflection of light between two sur- faces - a spherical surface and an adjacent flat surface. When viewed with monochromatic light, it appears as a series of concentric, alter- nating light and dark rings centered at the point of contact between the two surfaces. Using this apparatus, students can observe the phe- nomenon of equal-thickness interference. By measuring interference fringe separation, the radius of curvature of the spherical surface can be calculated.
Specifications Note: above product information is subject to change without notice. Minimum Division of Reading Drum0.01 mm Magnification20x, (1x, f = 38 mm for Objective; 20x, f = 16.6 mm for Eyepiece) Working Distance76 mm View Field10 mm Measurement Range of Reticle8 mm Measurement Accuracy0.01 mm Sodium Lamp15 ± 5 V AC, 20 W Radius of Curvature of Newton's Ring868.5 mm Beam Splitter5:5
Part List Main apparatus with beam splitter1 Power supply for Sodium lamp (LLE-1/2)1 Sodium bulb1 Reading Microscope1 Newton's Ring Assembly (SZ-37B)1 Power cord1 Instructional manual CD1