6 Optics

Crossed Gratings & Laser

Catalog: 
6D20.50
Location: 
Ga3
A laser beam passes throught two crossed gratings of various types.

Arago's (Poisson's) spot

Laser and Lens.
Catalog: 
6C20.10A
Location: 
Ga3
Shine a diffused laser beam at a small sphere or disk. The projected image shows Argo's spot.

Energy at a focal point - Video

demonstration image
Catalog: 
6A20.60A
Location: 
3_1
Video Encyclopedia :Remove the projection head of an overhead projector and hold a piece of paper at the focal point until it bursts into flame.

Polaroids on an Optical Bench

demonstration image
Catalog: 
6H10.101
Location: 
Gc2
Demonstrates polarization of light using 2 or 3 Polaroid films mounted on an optical bench.

Real image formation - Video

demonstration image
Catalog: 
6A60.30
Location: 
3_1
Video Encyclopedia :With a source and screen at the ends of a long optical bench, show the two positions a lens will produce an image.

Acrylic/lead glass refraction - Video

demonstration image
Catalog: 
6A42.47
Location: 
3_1
Video Encyclopedia :Hold a stick behind stacked lead glass and acrylic blocks. The image of the stick is shifted when viewed off the normal to the surface of the blocks.

Microwave polarization

The receiver's antenna is oreinted parallel to the direction of polarization.
Catalog: 
6H10.20A
Location: 
Dc2
Microwave polarization

Lens magnification - Video

demonstration image
Catalog: 
6A60.35
Location: 
3_1
Video Encyclopedia :Place various lenses between a backlit grid and the class.

Three prism stack - Video

demonstration image
Catalog: 
6A42.51
Location: 
3_1
Video Encyclopedia :A stack of three prisms of different glass, and index of refraction, shows different refraction and dispersion.

Karo Syrup Tank

Many colors can be seen as more syrup is added or the polaroid sheet is turned.
Catalog: 
6H30.40A
Location: 
Gc3, PS H359(ref.)
Fill a glass container with Karo syrup and insert glass objects (lenses). View the collection with crossed Polaroids on the overhead projector.

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