Flat Glass Plates Set of 6 for Interference Experiments
$48.00(Ex GST)
- Flat glass plates set of 6 for Newton rings and thin air-film interference practicals.
- Two plates form an air wedge using thin paper spacer at one end, contact at other.
- Produces Newton rings style fringes as light passes glass, thin air layer, and returns through glass.
- Best viewed with monochromatic source, sodium light commonly used, to make band contrast and spacing clear.
- Enables measurement of bright and dark band spacing, supports air-wedge geometry discussions in optics lessons
- Description
Description
These flat glass plates are supplied as a set of 6 for interference practicals, commonly used to demonstrate Newton rings style patterns formed by light travelling from glass through an extremely thin air film and back into glass. The effect is created by forming a controlled air wedge between two flat plates, which produces clear bright and dark interference bands.
To set up the air wedge, two glass strips are separated at one end using a very thin paper spacer and allowed to touch at the other end. This creates a gradually changing air gap between the plates. When viewed under a monochromatic light source, a sodium source is commonly used, the interference pattern is easily seen and the spacing between the light and dark bands can be measured for classroom analysis.
FAQs
Q: What experiment are these plates used for?
A: Interference demonstrations, including Newton rings style patterns from a thin air film between glass plates.
Q: How is the air wedge formed?
A: Two plates are spaced with very thin paper at one end and touch at the other end.
Q: What produces the visible bands?
A: Interference from light passing glass to a very thin air layer and back into glass.
Q: What light source is typically used?
A: Monochromatic light, a sodium source is commonly used.
Q: What can students measure?
A: The spacing between bright and dark bands of the interference pattern.
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