| |
Click to Enlarge
|
MAGNETS SET, RING, CERAMIC (FLOATING MAGNETS, WOBBLY MAGNETS)
To show that like magnetic poles repel each other by placing three or more ring magnets on a non-magnetic stand. Comprises five colored ring magnets (o.d. x i.d. x h), 32 x 16 x 6mm magnetised parallel to the axis, equipped with an acrylic rod mounted on a plastic base. The magnets float in the air, one over the others and spring back up when pushed down.
See Enlarge
|
|
|
|
Click to Enlarge
|
MAGNETIC NEEDLE ON STAND (DEMONSTRATION COMPASS)
For studying magnetic phenomena such as operation of a compass, testing of magnetic poles, finding the direction of electric current etc. Consists of a magnetised steel needle about 150mm long with brass bearing pivoted on a non-magnetic metal stand. North pole is marked in red. The needle when not in use is reversed and kept in main rod for safety.
See Enlarge
|
|
|
|
Click to Enlarge
|
MAGNETIC COMPASS
For tracing the magnetic fields of bar magnets. Consists of a magnetic needle encased in cylindrical aluminum case with glass top. Card dial.
See Enlarge
|
|
|
|
Click to Enlarge
|
MAGNETIC COMPASS
For plotting and exploring magnetic field. In a plastic case with a four color graduated dial. Full circle divided into 360? with N, W, S, E, etc. directions indicated. Graduated every 5? and labelled in 15? increments. The red tip indicates north. Diameter 38mm.
See Enlarge
|
|
|
|
Click to Enlarge
|
LIQUID-FILLED MAGNETIC COMPASS
For reading of topographical and tourist maps and determination of azimuthal location of a given place. Suitable for overhead projector. Transparent design. Diameter 50mm with black and red magnetised needle. Mounted on a transparent plastic base with 0-6cm x 1mm scale on bevelled end of the base plate. Full circle divided into 360? with N,S,E and W directions indicated. Graduated every 5? and labelled in 60? increments. The needle housing is liquid filled to damp oscillations in just 5 seconds. The red tip indicates north. Meridian lines help in accurate plotting of angles. Adjustable wrist strap. Made in Russia.
See Enlarge
|
|
|
|
Click to Enlarge
|
IRON FILINGS
For observing magnetic field. Grease free filing in plastic bottles. Pack of 500g.
See Enlarge
|
|
|
|
Click to Enlarge
|
IRON FILINGS, MAGNETIC CHIPS
Magnetic chips in a 50 gm vial
See Enlarge
|
|
|
|
Click to Enlarge
|
IRON FILINGS IN TUBE
For showing the molecular nature of magnetism. Can be temporarily magnetised by stroking with a magnet and demagnetised by shaking when the filings fall out of line. Consists of a (borosilicate) glass tube 10cm long with a bulb at one end filled with iron filings.
See Enlarge
|
|
|
|
Click to Enlarge
|
FRICTION ROD
For creating frictional electricity with materials wool, fur for charging electroscopes etc. Approximate dimensions of solid rods are: (l x 250-300 x 10-13mm. Soda glass, solid.
See Enlarge
|
|
|
|
Click to Enlarge
|
FRICTION PAD (EXCITING PAD)
For producing electrostatic charges on friction rods, electrophorous plates etc.
See Enlarge
|
|
|
|
Click to Enlarge
|
WHIMSHURT MACHINE
For generating static electric charges and causing electric discharges. Relative to Van de Graaf it produces higher current with lower voltage. Consists of two high resistance plastic disks of diameter 25cm approx, with equally spaced metal sectors. The discs are supported in two rigid upright supports, rotating in opposite directions with a hand crank. Provided with a system of induced charge collecting brushes, adjustable ball-ended electrodes and cylindrical Leyden jar capacitors for obtaining higher potential. Produces substantial opposite charges which are deposited in the capacitors and on metal spheres. A rapid sequence of sparks can be generated by lowering the systems capacitance. Mounted on insulated wooden base.
See Enlarge
|
|
|
|
Click to Enlarge
|
ELECTROSCOPE, FLASK TYPE
For experiments in detection of electric charge and determination of polarity. Consists of an Erlenmeyer flask 250mL, and a plated rod with a knob of diameter 16mm ( 2/3in) passing through a rubber stopper. A pair of aluminium leaves are suspended from the rod.
See Enlarge
|
|
|
|
Click to Enlarge
|
ELECTROSCOPE, METAL CASE
More sensitive instrument as leaf deflection is unaffected by air currents or by charges residing on the case. Reacts only to charges which are intentionally brought near or put on them. Comprised of a box made of aluminium with two transparent glass windows to shut out air currents and a plated metal support rod entering from the top through a polyethylene insulator. Two leaves of thin aluminium foil are suspended from the support rod. Supplied with three pairs of aluminium leaves.
See Enlarge
|
|
|
|
Click to Enlarge
|
PROOF PLANE
For transferring electrostatic charges from one body to another such as Leyden jars and electroscopes. Consists of a plated brass disc of diameter 25mm on a 15cm long insulated handle.
See Enlarge
|
|
|
|
Click to Enlarge
|
ELECTROSCOPE PITH BALL TYPE
For demonstrating the attraction and repulsion of electric charges. Consists of a an insulated brass pillar and hook on a base. Supplied with two colored pith balls with strings attached.
See Enlarge
|
|
|
|
