Optics
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Optics
Newton Ring Microscope
For Newton Ring Apparatus. Can also be used in various positions, heavy cast iron body, microscope tube mounted on a carriage sliding on top of the base, provided with fine adjustment screw, scale 120 mm long, vernier reading to 0.01 mm fitted with 10x Ramsden eye-piece, glass cross-line graticule and 75 mm focus achromatic objective.
PH30675M -
Optics
Laser Reflection and Refraction Tank
Laser Reflection and Refraction Tank demonstrates the principle of reflection and refraction. The clear circular acrylic tank has a circular scale graduated on the white base of the tank, making it easy to measure angles. Adjust the pivot-arm mounted laser to any angle along its full 360° range and measure the angle of reflection or refraction. Rotate the laser and observe first a reflected ray, then both a reflected and refracted ray, and finally just a refracted ray. Leveling screws on the tank’s base make leveling quick and easy. The laser is attached to the pivot-arm by a magnet and can be removed for use in other experiments. Instructions included.
PH30676 -
Optics
Demonstration Diffraction 3 in One
For demonstrating the principle of diffraction grating and the way in which its properties are dependent upon the number of lines per unit length. Comprises a card mount 90 x 40 mm approximately with three 16 x 9 mm apertures, each containing a diffraction grating replica. The gratings are of 100 lines/mm. 300 lines/mm and 600 lines/mm, respectively and are protected by cover glasses.
PH30677 -
Optics
Malus’ Law
Students can investigate the relationship between the intensity of transmitted light and the angle of rotation of two polarizing filters. A graduated cartridge containing two polarizing filters allows students to observe the change in intensity as they are rotated relative to one another. The analyzer allows quantitative readings to be taken using a voltmeter at five-degree intervals as the polarizing filters are rotated from minimum to maximum transmission. The output from the analyzer changes linearly with light intensity and so the resulting data can be used to verify Malus’ Law. Includes instructions.
PH30686 -
Optics
Newton’s Color Disc
To demonstrate the discovery made by Newton that white light is composed of seven colors. Consisting of a pulley mounted on a metal stand, the seven colored disc is driven by gears connected to a hand driven wheel. When the colored disc rotates, the eye can’t distinguish between individual colors and perceive it as white color.
PH30698 -
Optics
Light Kit
Simple kit that helps explain students the principle of reflection and refraction. Using mirrors, lenses, acrylic prism set and a ray box, light can be reflected and refracted in different ways. The acrylic prism set includes a triangular, half-round, double convex and rectangular prism and two double concave prisms all packed in a wooden storage box. A Newton color disc is also provided with this set. The color disc illustrates an important property of light that white light is composed of seven colors. With instructions.
PH30703 -
Optics
Color Mixing Apparatus
The color mixing apparatus consists of three super bright LED’s Red, Green and Blue to demonstrate the creation of secondary color with a combination of three primary colors. Intensity of these three LED’s are controlled with a microcontroller-based controller. Intensity can be varied from 0-100%. LED’s data can be stored to memory and later restored. The kit consists of two screens (one white Perspex screen and a black aperture screen) and a power supply.
PH30710 -
Optics
Spectroscope
Handheld simplest form of spectroscope. It can be used to get a general idea of the correlation between wavelength and observed color. A diffraction grating is used which spreads the incident light into its component wavelengths. An illuminated reference scale against which the spectrum may be viewed is also provided.
PH30727 -
Optics
Spectrometer, Standard
Reads to 6 minutes of arc (0.1°) 170 mm diameter metal scale graduated 360° x 1°, independently rotatable, with locking screw, vernier attached to the telescope reads to 0.1° (6 minutes of arc). Collimator is mounted on a fixed pillar, with an achromatic objective of 150 mm focal length and 21 mm aperture, and has an adjustable slit 6 mm long. The telescope is on a movable pillar, with a fine adjustment screw, an achromatic objective of 170 mm focal length, 21 mm aperture, Ramsden eye-piece and glass crosswire graticule. Both collimator and telescope have spiral focusing system and have axis adjusting arrangement. The table has 3 leveling screws, with lines marked to assist prism placement. With prism and grating holders, one small screwdriver and one Tommy bar for axis adjustment. Without prism.
PH30738 -
Optics
Spectrometer, Intermediate
Reads to 1 minute of arc. 150mm dia. Scale with protective cover and acrylic windows to read verniers is fixed to the telescope movement. The table is attached to double-ended verniers reading to 1 minute of arc with magnifier provided for the purpose. Both telescope and table rotations have fine adjustments. Collimator is on fixed pillar with 175mm focal length achromatic objective of 25 mm aperture and an adjustable slit. The telescope is on a movable pillar with 175mm achromatic objective x 8 Ramsden eye-piece and glass cross-line graticule. Both telescope and collimator have rack and pinion focussing and their optical axes can also be adjusted. Prism table has lines to assist prism placement hand has three leveling screws. With prism clamp, diffraction grating holder and one Tommy bar for axis adjustment, in case.
PH30745
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