6 Optics

Resolving power - Video

demonstration image
Catalog: 
6J10.81
Location: 
3_1
Video Encyclopedia :The camera zooms in on a vertical series of back illuminated double slits, each separated by half the distance of the preceding pair.

Microwave reflection - Video

Catalog: 
6A10.18
Location: 
3_1
Video Encyclopedia :Reflect a microwave beam off a metal plate into a receiver.

Chromatic aberration - Video

demonstration image
Catalog: 
6A65.21
Location: 
3_1
Video Encyclopedia :Project spots of light on a screen from several points on a lens. Note chromatic aberration and then add a second correction lens.

Spherical aberration in a mirror - Video

Catalog: 
6A20.20
Location: 
3_1
Video Encyclopedia :Shine parallel rays at spherical and parabolic mirror elements, noting the difference in aberration.

Large concave mirror - Video

Catalog: 
6A20.31
Location: 
3_1
Video Encyclopedia :Hold a candle and other objects at the center of curvature of a large concave mirror.

Impossible triangles - Video

demonstration image
Catalog: 
6J11.50
Location: 
3_1
Video Encyclopedia :An optical illusion that depends on viewing angle.

Diffuse/specular reflection - Video

Catalog: 
6A10.20
Location: 
3_1
Video Encyclopedia :Show a beam of light reflecting off a mirror on an optics board. Replace the mirror with a sheet of paper.

Periscope

demonstration image
Catalog: 
6A70.193
Location: 
Fc5
A tubular optical instrument that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight.

Disappearing eye dropper - Video

demonstration image
Catalog: 
6A40.30
Location: 
3_1
Video Encyclopedia :Place an eyedropper in a liquid with an index of refraction matched to the glass.

Polaroid's on the overhead - Video

demonstration image
Catalog: 
6H10.10 C
Location: 
3_1
Video Encyclopedia :Two polaroid sheets are partially overlapped while aligned and at 90 degrees.

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