Physics Instruments

A ventilated lamp house having an open front with extended sides finned externally for heat dissipation and vertical internal grooves to accommodate a slit plate and cylindrical
lens. It has a light source comprising of a 12 volts lamp in a holder with one meter of twin flex having banana plugs. Complete with metal slit plate having single and triple slits and whitened on one side and other side matt black .
SPARES
A Spare Metal Slit Plate
B Spare 12V Bulb
C. Spare Bulb Holder
D. Spare bulb holder complete with 1 meter of flex with two 4mm plugs.

Mounted on a metal stand with driving wheel, belt and handle Export quality.

For demonstrating that white light may be composed from all the spectral colours by rotation of multi-coloured disc. Comprising of a disc 200mm, mounted on metal stand and driven by belt with the help of driving wheel fitted with a handle, can be clamped on table.

Same as Cat. No. 1150 but outer tank is made of Brass sheet instead of G.!. Sheet.

2 volt polystyrene case. This type of battery is recommended for duties involving comparatively small discharges, will be required less frequently than once every two weeks.

Cat. No.	Voltage	Ampere/Hr.
a)	2 volt	20
b)	2 volt	45

Consists of two copper calorimeters 2"x 1" Resting inside a trough which stands in an outer tank. The latter is fitted with a wooden top with two holes for thermometer. Supplied without thermometer, but with stirrer. The outer tank is made from G.!. Sheet.

A standard microscope unit having 30x magnification is provided with a rotatable cross line and the eye piece can be focused as per individual’s requirement. The whole microscope tube unit can be raised or lowered and can be clamped in any desired position. The focussing of the microscope unit is done by rack and pinion arrangement. The longitudinal movement of the microscope saddle for the purpose of the rings is done by rotating the drum. The 26 mm movement can be read by scale and on the divided drum to 0.001 cm. Newton’s ring set consisting of the optical flat glass and one plano convex lens (100 mm radius) arranged inside a metal case resting over the stage of the instrument which cane be adjusted for the alignment of the measuring line. An adjustable reflector plate in the required direction is fitted on to the side of the set. The condenser lens is provided in front of the reflector.

A standard Microscope unit having 30x magnification is provided with a rotable cross line and the eye unit can be focussing and can be raised or loweredand can be clamped in any desired position. The focussing of the microscope unit is done b rack and pinion arrangement. The longitudinal movement of the microscope saddle for the purpose of the rings is done by rotating the durm. The 26 mm movement can be read by scale and on the divided drum to 0.001 cm. Newton’s ring set consisting of the optical flat glass and one Plano- convex Lens(100mm radius) arranged inside a metal case resting over the stage of the instrument which can be adjusted for the alignment of the measuring line. An adjustable reflector plate in the required direction is fitted on to the side of the set. The condenser lens is provided in front of the reflactor.

Interference fringes are clearly seen when the apparatus is viewed in sunlight, fluorescent light or monochromatic light. The glass plate and convex lens are held in a heavy aluminum frame having three adjusting screws. The frmae is 9 cm in dia and aperture is 15 cm.

Inteference fringes are clearly seen when the apparatus is viewed in sunlight, fluorescent light or monochromatic light.The glass plate and convex lens are held in a heavy aluminum frame having thre adjusting screws. The frame is 9cm in deameter amd aperture is 5 cm.

Comprising a small wooden frame of sizes 5” x 3” x 3” with a matt blackened inside and provided with a glass plate 4” x 3 ½”x 3/8 mm mounted at an angle of 450 to reflect the light downwards on to a plano convex lens of 60 mm dia having 100 cm focal length which rests on a plain glass plate 3” x 3” x 3/8 mm on the base of the box.

Comprising a small wooden frame of sizes 5” x 3” x 3” with a matt blackened inside and provided with a glass plate 4” x 3 ½”x 3/8 mm mounted at an angle of 450 to reflect the light downwards on to a plano convex lens of 60 mm diameter having 100 cm focal length which rests on a plain glass plate 3” x 3” x 3/8 mm on the base of the box.

Complete with optical bench of stainless steel rods (b) Nodal Slide Assembly 1154

Complete with optical bench of brass pipes ( inside shafting ) (b) and Nodal Slide Assembly 1154

Complete with optical bench of steel C.P rods and Nodal slide Assembly