Frederiksen
Commutator/collector contact spring
Commutator/collector contact springContact spring made from phosphor bronze.
Compact spectroscope
Compact spectroscopeHand-held spectroscope in a metal housing, which allows qualitative observation of the spectrum from spectral lamps and other light sources.
This robust spectroscope is of very high optical quality and requires no adjustment. An optical grating with 600 lines per mm and a prismatic optical system ensures sharp spectra without distorted colours.
Compact spectroscope, pocket size
Compact spectroscope, pocket sizeA cheaper alternative to the popular hand-held spectroscope TE313, where the price difference is due to a lower sharpness in the observation of e.g. spectral lines and that it is only 55 mm long.
Compass needle
Compass needleMagnetic steel needle with nickel-plated brass bearing. Requires base no. 341500.
Compass transparent, set of 12
Compass transparent, set of 12Useful in demonstrations of magnetic field strength & lines.
Compressed air
Compressed airUnit: Pcs
Concave/convex acrylic mirrors, small
Concave/convex acrylic mirrors, smallMirror-coated plastic sheet. Mirror coated on both sides and shaped like a hole mirror.
Conductor sphere
Conductor sphereUsed as a target for the sparks from the Van de Graaff generator.
The sphere’s mounting post has a socket that connects to the generator’s earthing socket.
Conical pendulum
Conical pendulumThe uniform circular motion of the conical pendulum allows the following to be investigated: centripetal force vs radius of orbit, centripetal force vs orbital period and determination of g. The disc moves almost without friction on its ball bearing, while the bob’s angle with the vertical is read on the graduated, balanced disc. The pendulum’s length can be varied using four interchangeable wires with hooks.
Control transformer
Control transformerUsed as a power supply for spectral lamps in connection with spectral lamp housing 283050 or 283065, and mercury lamps 286500 and 286000 fitted in holder 287000.
Convection chamber, air
Convection chamber, airThis convection chamber is designed for demonstrating convection processes in air. The simple, illustrative experiments help to clearly explain the principles of convection and facilitate discussion of how high and low pressure and winds arise.
Copper discs for voltaic pile 352200
Copper discs for voltaic pile 352200A model of the first galvanic battery
Copper nickel 23 wire, Ø 0.25 mm
Copper nickel 23 wire, Ø 0.25 mmMetal wire on 100 g roll CuNi23 0.25 mm
Copper wire, insulated, Ø 0.25 mm
Copper wire, insulated, Ø 0.25 mmMetal wire on 100 g roll Copper, insulated>br>Ø 0.25 mm
Copper wire, insulated, Ø 0.30 mm
Copper wire, insulated, Ø 0.30 mmVarious metal wires Copper, insulated 0.30 mm 500 g
Copper wire, insulated, Ø 1.00 mm
Copper wire, insulated, Ø 1.00 mmMetal wire on 100 g roll Copper, insulated 1.00 mm
Copper wire, uninsulated, Ø 1.78 mm
Copper wire, uninsulated, Ø 1.78 mmMetal wire on 100 g roll Copper, uninsulated 2.00 mm
Cork borer 4-10mm
Cork borer 4-10mmCorkscrew with practical handles made of nickel-plated brass. Makes it possible to drill 4-10 mm holes in plugs
Cork borer 4-15mm
Cork borer 4-15mmCorkscrew with practical handles made of nickel-plated brass. Makes it possible to drill 4-15 mm holes in plugs
