Electromagnetics


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Cathode Ray Mechanical Effect

Code: PHEM0001

Cathode Rays exert a pushing effect on objects it falls on, is shown by the rotating vanes by the force extended by cathode rays.

Shadow Effect

Code: PHEM0007

An object star obstructing the path of cathode rays casts its shadow the fluorescent painted wall facing cathode rays.

Radiometer

Code: PHEM0013

Comprising partly evacuated glass bulb approx. 70mm diameter, containing at its center a fine pivot which supports four light weight metal arms. One side of each vane is blackened, the reverse side is bright. Mounted on round base.

Spectrum Tubes

Code: PHEM0019

Straight form, with side electrodes and 50 mm. long fine capillary in the middle. Filled with Oxygen, Neon, Helium, Air, Nitrogen, Argon, Carbon Dioxide, Hydrogen, Iodine Vapour, Sulpher water vapours, Krypton, Zenon.
Size :
  • 20 cm. long
  • 26 cm. long.
Spare slotted weights and Hangers 5gm., 10gm., 20gm., 50gm., and 100 gm. are also available.

Spectrum Tubes Stand

Code: PHEM0025

Specially designed box holds the tube firmly while preventing you from touching the electrodes. A black panel behind the tube eliminates distracting ambient light and protects the tube from breakage. Operates on 220 Volts A.C., 50 Hz and suitable for 20 / 26 cm. Long spectrum tubes.

Induction Coil

Code: PHEM0031

Adjustable vibrating arm, with tungsten contacts and coil with core mounted on rigid wooden base. Baised off switch to prevent continuous running. Input voltage 6V D.C. at 2A via 4 mm. socket terminals. Spark length obtainable in air 5 mm.

Van De Graaff Generated Motor Driven

Code: PHEM0037

Specially designed for electrostatic experiments and where continuous source of high voltage is required. Fitted on base with smooth running A.C. Motor, operates on 220 volts A.C. 50 Hz.
  • Charge collecting Belt
  • Tracking
  • Charge collecting combs
  • Sphere
  • Connections
  • Voltage developed
  • Discharger Silicon rubber having excellent insulation resistance.
  • Belt-tracking easily adjusted.
  • Aluminium mesh, clearly visible.
  • Aluminium 150 mm. dia.
  • 4 mm. sockets in dome and base.
  • Upto 200 kV, depending on ambient conditions, with a spark length of 60 mm.
  • Spherical 100 mm. dia., with insulated handle and 4 mm. sockets.

Van De Graaff Generated

Code: PHEM0043

Hand operated on base. The generator is self exiting and charge separation occurs. A metal sphere surrounds the upper pulley assembly and charge accumulates on the sphere, which is insulated by a plastic column supporting the pulley assembly. The charge builds up untill electrical breakdown of air surrounding the sphere occurs. Supplied with a discharging sphere.

Wim Shurt Machine

Code: PHEM0049

The two plates are supported in two rigid uprights and driven by belt in opposite direction. They are heavy, high resistance plastic with sectors of aluminium sheet. Two leyden jars (condensers) made form corning glass and aluminium foil. The whole is mounted on a wooden base nicely polished.
Size :
  • 200 mm. Dia.
  • 250 mm. Dia.
  • 300 mm. Dia
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