Rajesh Scientific Works

Untitled Document

Electro Magnet , U- Form
" Sales Code MLG1795"

A Strong U Shaped Magnet , Limb Length 100 Mm ,Wounded With Insulated Copper Wire , 4 To 6 V D.C. Supply .

Magnetising And Demagnetising Solenoid
" Sales Code MLG1796"

Comprises Of A Helical Coil Of Insulated Copper Wire ,Mounted On A Base , Supplied With Iron Rod , One Meter Of Lead Wire And Fuse .For Use On 230 V ,Ac Supply.

Induced Current Apparatus
" Sales Code MLG1797"

Comprises Of A Primary Coil Of Insulated Copper Wire Wound Upon Cylinder Made Of Non-Conducting Material With Terminals , Secondary Coil Wound Upon Another Cylinder Into Which Primary Fits.A Soft Iron Core Fits Into The Cylinder Of The Primary. Complete With Terminals.

Induction Coil
" Sales Code MLG1798"

Used For Producing High Potential Difference And Approximately Unidirectional Current By Electro Magnetic Induction. Spark Length 50 Mm Usable On 8 To 10 V D.C.

Dynamo , Demonstration
" Sales Code MLG1799"

To Demonstrat The Conversion Of Mechanical Energy Into Electrical Energy Or Vice-Versa . 6 To 9 Volts Input Is Required . A Low Voltage Lamp In A Holder With 4 Mm Plugs For Out Put Indication , Mounted On Base With Driving Pulley , Connected To The Small Dynamo Pulley.

Electrical Vibrator
" Sales Code MLG1800"

A Steel Wire With A Hook On One Side Is Made To Pass Through Solenoid And A Horse Shoe Magnet. When 220 Volts A.C. Current Is Passed Through The Solenoid The Steel Wire Reverse With Every Charge Of A.C Current Direction And Vibrates With The Frequency Of A.C. Mains. The Frequency Is Calculated As Is Done In Melde's Apparatus. It Can Also Be Used To Measure The Capacity Of A Condenser By Applying The Formula C=1/Vf , Where C Is The Capacity Of The Condenser ,The Microameter Current . V The Main Voltage And F The Frequency.

Motor , Demonstration
" Sales Code MLG1801"

The Direction Of Rotation In The Motor Can Be Changed By Either Changing The Direction Of Current Or By Changing The Polarity Of The Magnet , Works On 6 To 9 Volts D.C.

Electric Bell Demonstration
" Sales Code MLG1802"

It Works On 3 To 6 Volts D.C. , Mounted On A Base All Parts Are Clearly Visible.

Telegraph Sounder Key
" Sales Code MLG1803"

It Works On 3 To 6 Volts D.C. ,Mounted On Wooden Base .All Parts Are Clearly , Visible.

West Minister Electromagnetic Kit
" Sales Code MLG1804"
Enables Students To Perform A Wide Range Of Experments Relating To Electromagnetism Including The Construction Of Working Motors And Meters. The Kit Is Still The Most Effective And Motivating Learning Aid In Elementary Electro Magnetics.
The Kit Comprises Of : 8 Each Anisotropic Alloy Magnets And Ceramic Ferrite Magnets , 4 Steel Magnets Yokes , 6 Plotting Compasses , Reel Of Cotton Thread , Cellulose Tape , Reels Of Copper Wire , White Sheets Plain Cards , Carbon Resistors 100 Ohm & 10 Ohm , Double C-Cores With Clips , Aluminium Rings , Support Bases , Armatures With Axel Tubes And Aluminium Axel Rods , 8 Split Pins , 16 Rivets , 1 Length Latex Rubber Tubing , 8 Flash Lamp Bulbs , 5 Neon Lamps , 8 Lamp Holders , Pack Of Rubber Bands , Wooden Clamp And Block , With Instruction Manual.

Oersted's Apparatus
" Sales Code MLG1805"

To Demonstrate The Effect Of Current On A Magnet And The Direction Of Deflection Comprises Of A Magnetic Needle Pivoted At The Centre Of A Copper Rod Rectangle With Terminals.

Barlow's Wheel
" Sales Code MLG1806"

To Demonstrate The Motion Of A Conductor Carring Current In A Magnetic Field. ( Primitive Form Of Electric Motor ) A Current Of Approx , 3 Amps , At 3-4 Volts Causes Steady Rotation Of Star Shaped Copper Wheel ,With Electromagnet But Without Mercury.

Galvanoscope
" Sales Code MLG1807"
To Detect The Presence And Direction Of Electric Currents By The Deflection Of A Magnetic Needle .It Consists Of An Insulated Former With Terminals , Circular Scale Marked At 4 Quadrants With 30 Turns Of Enamelled Copper Wire And A Magnetic Needle Provided At The Center.

Force On A Conductor Balance
" Sales Code MLG1808"

To Demonstrate That When A Current Is Passed Through A Conductor In A Magnetic Field ,It Is Subjected Toa Force Of Attraction Or Repulsion Depending Upon The Direction Of Current In It. It Consists Of A Plastic Base On Which Two Contact Pillars Are Mounted .Each Pillar Is Provided With An External Circuit . A Balance Beam Is Supported By The Pillars On Two Bearings Which Form The Fulcrum.Two Screwed Masses Are Provided In The Beam System , One Moving Vertically For The Adjustment Of Sensitivity And The Other Moving Horizontally For The Adjustment Of The Equilibrium Position When No Current Is Flowing .Scale Marked 0 To 75 X 1mm ,Rider Of 1gm Weight . Instruction Manual.

Bicycle Dynamo
" Sales Code MLG1809"

Mounted On A Wooden Base With Two Sets Of Pulley Driven By Crank For Fast Or Slow Motion .When Driven At Fast Speed The Bulb Glows .Two 4 Mm Sockets Provided In Parallel With The Lamp .

De Mountable Transformer
" Sales Code MLG1810"
Comprises Of Laminated U & I Type Cores Of Low Loss Magnetic Material To Form A Closed Core . A Cast Aluminium Alloy Stand Consists Of A Heavy Base With Two Removable Clamping Arms .Size Of Base 190 X 200 X 115 Mm . Five Coils Each Of 300 , 600 , 1200 3600 & 12000 Turns Of 220 V Ac Are Supplied.

Vacuum Tubes ,Various Shapes
" Sales Code MLG1811"

This Consists Of A Set Of Six Vacuum Tubes Of Various Designs ,These Tubes Show Electrical Conduction Through Rarefied Gas Mounted In A Glass Case With Rotary Switch For Selection Of Any Of The Tubes.

Vacuum Tube , Cross And Shadow
" Sales Code MLG1812"
When A Cross Is Placed In The Path Of The Cathode Rays A Sharp Shadow Is Formed.Its Sharpness Is An Indication That The Rays Are Emitted From The Cathode In All Direction ,It Shows That Cathode Rays Travel In Straight Lines.

Vacuum Tube , With Vanes
" Sales Code MLG1813"

To Show The Mechanical Properties Of Cathode Rays ,Radio Meter Vanes Are Painted With Different Flourscent Colours Which Glows Beautifully When Moving At High Speed.

Vacuum Tube , Spectrum Type / Geissler Tubes
" Sales Code MLG1814"
To Demonstrate The Luminous Effects Of An Electrical Discharge Through A Rarefied Gas .These Are Available In Straight Form With Capillary In The Middle.
A) Rarefied Helium Gas
B) Rarefied Neon Gas
C) Rarefied Argon Gas
D) Rarefied Mercury Vapours
E) Rarefied Hydrogen Gas
F) Rarefied Nitrogen Gas
G) Rarefied Oxygen Gas
H) Rarefied Carbon Dioxide Gas
I) Rarefied Sulphur Dioxide Gas
J) Rarefied Water Vapours Gas .

X-Ray Tube
" Sales Code MLG1815"

Comprises Of A Vacuum Tube Containing Electrodes That Accelerate Electrons And Direct Them To A Metal Anode To Produce X-Rays Fall On The Fluroscent Screen .Complete With Box (Wooden ) For X-Ray Tube & Fluroscent Screen.

Physics