Physics Research Instruments

Jamin interferometer .

for determination of change in refractive index in liquid and gases of the order of 10^-6

instrument is provided with compensating plates for working with monochromatic

and white light source.

essential accessories:

a. plane-parallel optical glass cell with mechanical mounts.

b. a pair of gas cell with plane-parallel widows with mechanical mount.

c. telescope to observe the fringes.

d. stethoscope to measure the pressure difference while looking at the shift of

number of fringes with respect to change in pressure of the gas column

optional accessories:

a. sodium vapor lamp(35w) with choke and enclosure.
b. Table lamp.

The Ultrasonic energy is produced by converting electrical energy in to Mechanical Vibrations by using generator and piezo Electric Transducers. Due to Mechanical Vibrations in cleaning liquid this Phenomenon is called cavitation. In a very short time it removes all dirt & foreign bodies from components which are immersed in the cleaning liquid.

• Uniform Cavitations Through Out The Tank
• Separate Oscillator Eliminates Damage To Generator In Case of Failure Of Transducers
• Using 40 Khz Frequency For Effective Cleaning With Low Noise
• Designed For Complete Cleaning Of Small and Large Components Without Dismantling

Babinet Compensator Offering Babinet Compensator., The Instrument consists of two round scales. One with index and the other with vernier. The first scale (Index scale) is for turning the analyzer into the azimuth. The second scale (vernier scale ) is for measuring the degree of orientation of a wedge box. The long wedge is moveable by means of a micrometer drum with the help of which accurate reading of the movement is taken.

Panel mounted, spin free with 4 mm. sockets. Available in Black/Red colours

Different types of Sockets, Plugs are shown in the picture.

Bending of beam apparatus: consisting of two g. Clamp with knife-edge top. Comprising a metal bar of 100 cm length having width 25 mm and thickness 4. 5 mm. Sharp knife edge with hanger is also provided which moves on metal bar. A spherometer fitted on a cast iron stand (specially designed for this apparatus) with electric contacts is also provided, but without weight.

Laboratory spectrometer offered by us are extensively demanded in the market due to its robust structure that includes telescope & collimator that have fine rack & pinion motion and are mounted on a stable heavy C. I. base with three leveling screws. Customers are eased with the availability of the Student Spectrometer in Brass and Stainless Steel Scale in both the sizes of 15.0 cm (6") and 17.5 cm (7") of protected circle. Moreover, we are listed at the apex in the list of the preeminent Scientific Spectrometer Suppliers in India.

Spectrometer

Collimator:-Its purpose is to produce parallel beam of light. It is fitted with special quality of 175mm F.L. achromatic object glass and of wide clear aperture. It is fitted with rack & pinion focusing.

Slit:- It is fixed to the Collimator tube end and is of stainless steel. It has two sharp edges, which are optically true, one edge is fixed while other moves parallel to it.

Telescope:- It is an astronomical telescope fitted with an achromatic objective of highest quality and clear aperture. It is mounted on another are which is fixed rigidly to the circular scale of the spectrometer. The telescope along with the scale can be turned round a vertical axis passing through the centre of the spectrometer.

of concentric circle with the axis of rotation of the prism as its centre, are engraved on the prism table along with two lines at right angles passing through the centre of the prism table.

Base:- The sturdy base with heavy casting along with two level screws gives the instrument stability and horizontal leveling.

Model Available:-

1. 6” Spectrometer with venire constant with 1 minute or 30 second are, 10x Ramsden eye piece finest optics fully achromatic 7” focal length aperture 1”.
2. 7” Spectrometer has protected circle of 7”. As per requirement provided with two venires of 1 minute or 30 seconds. Finest optics fully achromatic 7” focal length, aperture 1”. Scale graduation is 1/2º or 1º range 360 º, and venire constant 30 seconds, 10x Ramsden eye piece cross line graticule (glass) Magnifiers.
3. Advanced Research Spectrometer:-Research Spectrometer 9” circle and 2 venire scale, graduated gunmetal 9” scale divided into 1/3 º divisions, accuracy of calibration ± 0.0001%, two opposite venires to read upto 20 seconds. Finest optics 9” focal length and 1 dia meter 10x Gauss eye piece.

Optional Accessories:-

1. Diffraction Grating
2. Sodium Vapour Lamp, Transformer Sodium Lamp Wooden Box.
3. Magnifiers 4”
4. Prism

Comprising a seasoned wood resonance box 45"x4"x4" with meter scales one meter long sub-divided in millimeters. One each brass and steel wires of S.W.G. 26 and 24 respectively, attached to a fixed bridge and tensioned by fine adjustment pegs; two moveable bridges, pulley and fixed screw to enable a third wire to be fixed for tensioning by weights.

Zeeman effect is an optomagnetic device in which a source of line spectrum prefavourly monochromatic source is placed between the poles of electromagnet.  On applying the suitable magnetic field, the spectral line splits into sub components which have wavelength different from its main / original wavelength.  The apparatus should have:

·         Constant deviation spectrograph

·         Calibration of drum: 400 nm to 700 nm

·         Least count of calibration: 1 nm

·         Constant deviation prism made of optical glass having refractive
          index – 1.71

·         Electromagnet should have field strength 10 KG at a gap of 10 mm    

          Between its poles

·         Pole pieces dia.: 50 mm; length: 200 mm

·         One end of pole pieces is tapered (tapered dia. 25 mm)

·         Other end is threaded and provided with a mechanism to move pole  
          pieces back & forth to vary the gap between them

·         Digital and stabilized power supply (30 volt; 10 amp) for above    
          electromagnet.

·         Neon discharge tube of suitable capillary thickness

·         Wooden stand for holding the above discharge tube

·         High voltage transformer (Range: 1-4.5 KV) to run the above    
          discharge tube.

·         Digital gauss meter (Range: 2-20 KG)

·         Is required to measure the applied magnetic field

·         A micrometer eyepiece (measuring range: 0-15 mm) should have least
          count 0.01 mm

·         Fabry-Perot etalon (clear aperture 25 mm) should be provided with
          level screws

We are amongst the reputed manufacturers of HL-517 michelson interferometer. These interferometers have lead screw of dia 17 mm, Pitch 1 mm with a threaded length of 200 mm. The lead screw and its nut are optically lapped for maintaining constancy of the pitch. Further, the mirror mounts are of kinematic type that has orthogonal tilt arrangement in x & y plane by using fine threaded screws.

Features:

• Mirror holders (Fitted with mirror mount), which makes them capable of holding mirrors of 25.4 mm dia & 12.5 mm thickness
• Interferometer provided by 3 scales
• Linear scale 0-150 mm graduated in mm is attached with bed of interferometer
• Graduated disc (0-100 Div.) may be peeped through glass window and is provided with head of the Interferometer
• One division of graduated disc H 0.01 mm
• A graduated slow motion drum (Graduation 0-100 Div) fitted on right hand side of Interferometer
• One division of sow drum = 00001 mm. that is least count of Interferometer: 10 'mm

Optical Parts:

• Beam Splitter: (Size: 40 mm x 30 mm x 8 mm), partially coated
• Coating Mat: Al + Sio2: R/T ratio: 50/50 ± 5%
• Optical finish: A/10 both faces
• Parallelism between their faces <5 arc seconds

Note: Beam splitter plate (before coating) & compensating plate are carved from same optically worked glass plate having:

Specifications:

• Thickness: 8 mm
• Surface flatness: A/10
• Parallelism between two faces: <5 arc seconds to maintain their optical identity
• Mirror (Front surface coated) Dia: 25 mm, Thickness: 10 mm
• Surface flatness of coated face: A/10 & other face optically polished
• Mirrors reflectivity * 90%
• Telescope Observation The Fringes: Objective is an achromatic doublet of din 25 mm
• F.L: 125 mm
• Telescope magnification: 10x

The case is made of aluminium, strongly mangetised cobalt steel needle fitted with imported hard axle rolls on knife edges agates and can be clamped when desired by a V clamp, a sensitive spirit level is provided. The tripod stand is provided with three levelling screws.

Research optical bench 
(physilab research optical bench model)
The bed is heavy cast iron with a strong control rib, throughly seasoned and aged before machining and griding of its upper surfaces. Total length 170cm. With a machined full length platform for the scale. The scale is from lifetime stainless steel fitted on its machined platform on the bed,divided in mms to a length of 170cm. Accuracy of calibration 0. 01%
Lythe type 170cm long with accessories, assembly 4 riders slit.

Boy's law apparatus

It has two glass tubes, one closed at the top and other tube open whose lower ends are connected together by 1 meter of rubber tubing.Both tubes are mounted on sliding brackets with a provision to lock at any point.Metallic strip with a meter scale graduated from 0 to 100cm fitted on heavy iron base with leveling screws without mercury provided with pressure rubber tube.