Advance Newton Ring Apparatus
Item Code : SK008
Principle and Working:
The Advanced Newton’s Rings setup is a versatile device used to determine the wavelength of light. It consists of a plano-convex lens placed on an optically flat glass plate, creating a thin air film of varying thickness between them.
Light from an extended monochromatic source is converted into a parallel beam using a convex lens with a short focal length. This beam falls on an optically flat glass plate inclined at a 45° angle to the vertical, where it is reflected onto the plano-convex lens. The wavelength of the monochromatic light source is determined by measuring the radii of the interference rings.
- Stand alone setup (built in sodium bulb, microscope, HID blast transformer & optics in a single compact body.
- Reflector mounted at 45° (no special adjustment required).
- High quality glass plates (flatness λ/10)
- Heavy rigid body weight 12.6 kg approx.
- Smooth X & Y movement of reflector assembly
- Modern compact design required less space in Laboratory.
- Modern user friendly design.
- To determine the wavelength of sodium light.
- To determine the refractive index of a liquid by using Newton’s rings apparatus.
- To find the radius of curvature of planoconvex lens using Newton’s rings experiment, given λ=5893A° .
- To find the thickness of a thin sheet of paper (air wedge experiment).
- Linear motion : 10 – 0 -10mm
- Micrometer : Vernier dial 100 div., LC 0.01mm
- Eyepiece : Ramsden 10X
- Objective : 3X
- Spherometer : Types 3 legs, Vertical scale 6 x disk(brass) 6mm(WxT) Micrometer dia. 40mm,Brass lower disc dia. 60mm, Range 10-0-10mm, Least count 0.01mm
- Plano convex : Dia. 61.5mm, Glass, Focal length lens 200mm
- Sodium source : MS housing, 200 x 85mm (LxØ),slit(LxW) 20x16mm
- Sodium bulb : pin Type Socket 35W
- Fuse : 2A
- Body : Al casting
- Weight : 12.6 kg approx
| S.No. | Item Name | SK008 |
|---|---|---|
| 1 | Newton’s ring apparatus | 1 |
| 2 | Plano convex lens with plain lens | 1 |
| 3 | Optically plain Glass plate pair | 1 |
| 4 | Plain glass (75 x 75 x 2 mm) | 1 |
| 5 | Spherometer Double Disc Range 10-0-10 mm | 1 |
| 6 | Plain Glass Plate (108 x 70 x 1.2 mm) | 1 |
| 7 | Sodium Bulb (35W) | 1 |
| 8 | Power Cord (Main Lead) | 1 |
