OPTICS - REFLECTION, REFRACTION AND DISPERSION

O.1 (1) Ray Optics Laser System

0.1 (2) Optical Disk

0.1 (3) Refraction Tank

0.1 (4) Total Internal Reflection

0.1 (5) Lenses

0.1 (6) Prism

O.1 (7) Disappearing Beaker


O.1(1) - RAY OPTICS LASER SYSTEM

This demonstration uses a Laser Ray Box (Wavelength - 635 nm) that project 5 parallel laser beams onto various flat surfaces. It contains a five 1 mW diode lasers. The optic set includes six magnetically-backed templates.


Accessories include concave and convex lenses, prisms, mirrors and geometrical figures. They average 5 cm thick and 20 cm high, being highly visible for the whole class. All accessories are attached to the board using magnetic handles. This apparatus can be used to demonstrate index of refraction variations, total internal reflection, parallel deviation, prism behavior, etc.










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O.1(2) - OPTICAL DISK

It demonstrates fundamental properties of light, similar to 0.1 (1). The metal disk is about 30 cm in diameter, and a semi-circular acrylic plate of about 20 cm in diameter is attached to it, with coincident centers. Many demonstrations can be performed by rotating the metal hood to let the light ray strike the disk from any desired position. The ray projector is magnetically attached to a radial bar. An accessory set with glass plates of various shapes is also available (they are 8.5 cm in length).

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O.1(3) - REFRACTION TANK

It is designed to show refraction in water. The tank is placed in the center of a metal dish with a circular scale marked off in degrees on its edge. The tank itself is a semi-cylindrical acrylic strip, fitted on the front and back by semi-circular acrylic plates. The tank is filled with tinted water and a ray of light is incident from a light source set in a radial bar. Is shows total internal reflection very well.






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O.1(4) - TOTAL INTERNAL REFLECTION

There are many demonstrations for this phenomenon. The three previously mentioned demonstrations can be used: the Geometrical Optics Blackboard, the Optical Disk, and the Refraction Tank, where a ray of light is reflected internally at the surface between colored water and air. Other demonstrations are


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O.1(5) - LENSES

Lenses of different sizes, focal lengths and types are available along with lens supports. optical benches and its accessories. These lenses can be arranged to show varied effects and phenomena. As an example, a convergent lens forms a real image of a candle's flame on a screen wall. The image in inverted.


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O.1(6) - PRISM

A prism demonstrates the dispersion of white light into a spectrum. The demonstration is done on the optical board




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O.1(7) - DISAPPEARING BEAKER

This beaker, with no markings, bends light the same as Wesson Vegetable Oil. the Glass and the oil have the same index of refraction. When the beaker is immersed into a container of this oil, the beaker becomes invisible.

Click here to download the video clip of this demo




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