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 DIFFRACTION GRATING                

 

Diffraction grating pressed between clear glass plates. Ideal for class room demonstration.
Size 60mm x 40mm. View area: 45mm x 30mm.

Lines per mm/inch

Cat. No.

100/2400

4309-01

300/7500

4309-02

600/15000

4309-03


 DIFFRACTION GRATING, DEMONSTRATION SET                

 

Three diffraction gratings of 100/300/600 lines per mm in one mount.

Cat. No.

4309-00


 OPTICAL DISK, HARTL

 

For demonstrating important principles of optics such as reflection by various shapes of mirrors, refraction through several types of lenses, total internal reflection and dispersion.
The apparatus consists of a satin finished metallic disc about 30cm in diameter, graduated around the circumference in 360. A handle on the back can be used to rotate the disk through 360 in a vertical plane about a horizontal axis perpendicular to the plane and passing through the center of the disk.
The disk is partially shielded by a hood adjustable through 360 degrees. On the hood is a circular plate with slits to allow ray or rays of light to pass and fall on the optical elements. The hood also has a slot for placing red, green and blue filters. The disk face is outlined for various optical elements so that light coming through these slits strikes them at correct angles. The disk is mounted on a heavy tripod base.
A strong source of light for sending parallel rays through the slits and on to the shielding screen is required. Optics and filters are not included.

Cat. No.

3358-01


 ACCESSORIES FOR OPTICAL DISK, HARTL

 

Includes the following glass lenses or prisms. Frosted faces. Thickness 10mm.
Packed in a velvet lined case.
Spherical bi-convex lens, length 85mm
Spherical bi-concave lens, length 85mm
Triangular right angle prism (90-45-45), hypotenuse 75mm
Trapezoidal prism, base 85mm
Semicircular lens, diameter 85mm
Circular lens, diameter 85mm

Cat. No.

3358-05

Note: The optical elements are fixed on the metal disk by means of clamping screws which are provided with the Hartl Optical Disk.


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