Optics

90 mm diameter, 16 mm thickness.

Set of three crystal-clear acrylic, equilateral prisms. 25mm faces and 25mm, 50mm and 100mm long.

Transparent and highly polished for clarity. Face 5cm.

To demonstrate refraction and provide a better understanding of Snell’s Law. Comprises of acrylic cube and a glass mug. Includes instructions.

A comprehensive set of equipment for performing ray optics and color mixing experiments using magnetic-backed components. The components can be used with a whiteboard (included) or any installed steel / magnetic board. The set includes one lightbox with a power adapter, three slits, one transparent color filter (set of 7), one opaque color filter (set of 7), one rectangular acrylic block, one semicircular acrylic block, one right angle block 90° x 45° x 45°, one right angle block 90° x 60° x 30°, one equilateral prism, four plastic coated ring magnets, one double convex block, one mirror strip, one double concave lens, one rectangular acrylic bar, one acrylic liquid container, two magic alphabet card, and one mirror holder. The size of the whiteboard supplied is approx. 580 x 390 mm.

To provide a simple means of producing single or multiple rays of light for use in elementary optics. Made of die-cast alloy, the ray box has an open front and vertical internal grooves to accommodate a slit plate and a cylindrical lens. Supplied complete with a plastic plate having single and triple slits, a 12V-24W SBC line filament lamp and a lamp holder.

A Robust lightbox in matt black finish with a 12 V 24 W axial filament lamp with flexible leads. One end of the box takes a cylindrical convex lens in an adjustable sliding mount to enable production of convergent, parallel or divergent beams. Complete with accessories which consist of: 5 Plastic blocks, One Rectangular, One semicircular, One equilateral prism 60° x 60° x 60°, One right angle prism 90° x 60° x 30° and One right angle prism 90° x 45° x 45°. 3 Cylindrical acrylic lenses- one double convex, one double concave, both having the same radius of curvature and one thick convex lens. 3 mirrors, one plane glass, one curved parabolic and one curved semi-circular. 2 Slit plates, one with three narrow and one narrow slits, the other with four narrow and one wide slits. 1 Set of eight color filters- Red, Green, Blue, Cyan, Violet, Yellow, Orange and Magenta. 1 Set of colored cards- Red, Green, Blue, Violet, Orange, Cyan, Yellow and Pink. Complete with one spare lamp, in box.

Comprises a white-painted wooden board mounted on nonskid plastic feet, and a removable turntable about 170 mm in diameter. Two orthogonal lines along the turntable’s diameter divide it into four equal quadrants. Just beyond the rim of the turntable, a circular scale graduated 90 – 0 – 90 – 0 – 90 °, with 1° subdivision. Also includes a ray box with a 12V 24W bulb. Supplied complete with a cylindrical convex lens with focal length approx. 75 mm and a plastic plate having single and triple slits. An optical set is available separately, comprising of one each of rectangular, semi-circular, right-angled triangular – 90 ° 45 ° 45° trapezoidal, biconvex and biconcave prisms.

A 12V 100W lamp in ventilated housing. Apertures are provided to enable lamp to be used as a horizontal ‘line’ source or a powerful pointer source. Mounted on a rod for being supported on a laboratory stand.

A simple model to show the working of astronomical telescope, comprising a plano-convex lens diameter 38mm focal length 100mm, mounted in metal tube which slides in an outer tube of 400 x 42 mm, size, with a convex lens objective diameter 50mm focal length 500mm, in case.

On wooden base, with 1.5-meter scale, with six sliding bases. Each sliding base is with an index mark, a moulded pillar and locking screw, with following accessories:

• One lamp house with 12 V lamp.
• One object screen, metal.
• One lens holder for 38mm dia. Lenses.
• One receiving screen, metal, white
• One object needle, mounted in moulded pillar
• One plane mirror in metal frame.
• 38mm convex lens with 10, 15, 20 cm focal lengths.
  Each of these accessories is mounted on a 6 mm MS rod which fits into the pillars and is adjustable for height.

Comprises a waxed paper screen with a wax free central zone mounted on a black metal frame 100 x 75 mm, with a central aperture of 51 mm diameter mounted on rod.

A double slit 10 mm long x1 mm separation in 50 x 50 mm frame. Mounted in channel with a hinged joint and micrometer screw to give fine adjustment. For observation of fringes produced by interference between two beams of light from a common source.

A flat glass plate and a slightly convex lens of 50 mm diameter are placed in a metal frame with three pressure adjusting screws to produce Newton’s Rings.

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.

Transmission type, 30 x 25mm range 600 lines per mm, with protective glass cover.

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.

Handheld, all colors are blended on spinning. The wheel size 22.8cm diameter approx.

In cardboard frames of size 50 x 50 mm. Set of 7 primary and secondary colors.

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.

Vernier reading to 30 seconds of arc. The 175 mm dia. 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 focal length. Achromatic objective with 32 mm clear aperture and a laterally adjustable slit 6 mm long. Telescope is mounted on a movable pillar fitted with 175 mm fl. achromatic objective of 32 mm clear aperture and x 10 Ramsden eye-piece with a glass cross line graticule. 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. Prism table is marked with lines to assist prism placement and has three table leveling screws. It also has an interchangeable clamping unit for the prism and diffraction grating.
Complete with prism clamp, diffraction grating holder and a Tommy bar for adjusting optical axis. In case.

For measurement on two axes, with horizontal and vertical scales, heavy stand with leveling screws, and a carriage fitted with micrometer screw for fine adjustment. Another sliding carrier is provided on vertical bar also with micrometer screw for fine adjustment. Microscope tube is fitted with rack and pinion focusing. Stainless steel scales and verniers, horizontal scale 160 mm with vernier reading to 0.01 mm and vertical scale 140 mm with vernier reading to 0.01 mm. Ramsden eye-piece x 10 with crossline graticule and 50mm focus objectives. Magnifier is provided to read vernier.