In some limited condition, any color can synthesize by red, green and blue color, which we called self-color, that is the tricolor's theory of vision.
Bases on the theory, this instrument can process experiment about color synthesis.
This demonstrator is suitable for experiment operated by students' group.
Light Source: LED
Power Supply: 6V DC power
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This Diffraction Grating Demonstration Slide has three 20mm x 10mm gratings with 100, 300, and 600 lines per mm, mounted between glass plates.
The viewing area of each section is 15mm x 10mm.
Three lenses on one slide can be used to demonstrate diffraction of light or to measure wavelengths of light.
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It is a more useful instrument for research the rule of photoelectric effect:
Electrons inside an object will escape to the surface immediately when light irradiates on it.
Initial kinetic energy of the escaping electrons has nothing to do with intensity of light but increased along with increment of light frequency.
Saturation current is positively rated to intensity of light.
The instrument can also determine the stopping potential and qualitative analysis the Planck's constant (h=6.62619x l034 J.S).
Specification:
Color Filter: 700nm, 635nm, 500nm, 460nm, black plate.
Anode Current of X-rays Tube: 2mA.
Sensitive Component: vacuum phototube.
Light Source: 12V/20W incandescent lamp.
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IEC Photoelectric Cell on Base with Terminals and 90CG Photoelectric Tube.
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Using the geometric principle, the distance (length) can be directly measured remotely.
Can indirectly measure the height of buildings, trees, etc.
Use laser wavelength 650nm.
It can be corrected to zero, and the measurement distance is marked with three segments.
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Used to verify the imaging characters of the mirror.
Mirror forms a virtue image of the object.
The object and the image is symmetric and of the same size.
Object distance is equal to image distance.
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Including one 3-color light source.
Made of metal 14cm x 10cm x 6cm, 1 white board, size 18cm x 24cm, 3 color filters.
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For quick examination of spectral composition of white light.
Consists of a metal tube with draw-out focusing and an adjustable slit, fitted with achromatic objective and prism.
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The 175 mm diameter scale is fixed.
The table and telescope movements are completely independent of each other and read to 30 seconds of arc by means of double ended verniers and magnifiers.
Both rotations have fine adjustment screws. Coarse adjustments can also be made by release of clamping screw.
Collimator is mounted on a fixed pillar and is fitted with 175 mm fl. Achromatic objective with 32 mm clear aperture and a laterally adjustable slit 6 mm long.
Both the telescope and collimator have rack and pinion focusing and can be adjusted for leveling the axes of both units as well as for adjusting to the axis of rotation.
Complete with prism clamp, diffraction grating holder and a Tommy bar for adjusting optical axis.
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Measure light, wavelengths and color from light sources.
Measure wavelengths from 400nm to 700nm.
Accuracy is +/- 5nm.
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For demonstrating the movement of progressive transverse waves.
Consisting of acentric Aluminium discs supporting a series of metal rods.
On revolving the handle, transverse waves are obtained with bent, straight rods.
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Big Wave Form Spring, made from steel, for demonstrating wave motion.
Closed length: 10cm, Diameter 7cm.
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Designed for use in professional laboratories but is an ideal choice for science classrooms and household use.
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