Naugra scientific Physics - "Electro-Magnetism"

Electro Magnet , U- Form
" Sales Code PM1001"

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 PM1002"

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 PM1003"

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 PM1004"

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 PM1005"

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 PM1006"

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 PM1007"

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 PM1008"

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

Telegraph Sounder Key
" Sales Code PM1009"

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

West Minister Electromagnetic Kit
" Sales Code PM1001"
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 PM1010"

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 PM1011"

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 PM1012"
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 PM1013"

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 PM1014"

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 PM1015"
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 PM1016"

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 PM1017"
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 PM1018"

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 PM1019"
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 PM1020"

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.