Physics Educational Materials

Supplier: MOLLER THERM

Radiometer according to Crookés. Consists of a glass container on foot with low air pressure and needle-bearing spinner with four vertical mica discs. The discs are black on one side and shiny on the other. The discs thus absorb radiation differently. The higher temperature of the dark side means that the air molecules get greater kinetic energy in collision with the dark side of the discs than with their shiny side. The result is that the spinner starts to rotate.

Supplier: 3B Scientific

Evacuated glass flask containing i.a. electron gun with directly heated tungsten wire cathode and a cylindrical anode. The electron gun emits a divergent electron beam, aimed at an Maltese cross of aluminum placed in the middle of the tube. The cross can be connected electrically. At the same time, light from the filament is also directed towards the cross, so that a comparison can be made between the shadows of different types that appear on the luminescent surface at the far end of the tube. Specifications.

Supplier: GR NNA PLASTEMBALLAGE AB

Educational Materials, Mechanics, Application: Physics, Trundle

Supplier: PHYWE

Equipment for quantitative demonstration of the electron's wave nature and particle properties. At high electron energy, interference can be observed and evaluated in the form of Debye-Scherrer rings. The Broglie equation and Bragg's conditions can be proved. At low electron energies, the paticle properties of the electron can be demonstrated in a manner similar to geometric optics.

Supplier: GR NNA PLASTEMBALLAGE AB

Educational Materials, Electricity/Magnetism, Application: Physics, Silk cloth, 150 × 150 mm

Supplier: PHYWE

Supplementary kit for table optics 765-1317. Content:

Supplier: CORNELSEN EXPERIMENTA

For electrostatic experiments. Consists of insulated aluminum holder with pointed bearing, removable capacitor plate, metal ring with rod and 4 mm earthing contact.

Supplier: 3B Scientific

Large tuning fork for demonstration the vibrating legs of the fork.

Supplier: 3B Scientific

Unfinished, walnut sized stone made of magnetic iron ore (magnetite).

Supplier: PHYWE

With a special addition, the analogue instrument can be turned into a digital instrument with simultaneous analogue display. In order to extend the measurement possibilities, there are also measurements for power and voltage amplification. The replaceable measuring areas are slid into a slot on the top of the instrument ('toaster principle').

Supplier: PHYWE

Educational Materials, Electricity/Magnetism, Application: Physics, Measurement insert for pressure For measurement and demonstration of pressure. Scale graded in bar. Comes with measuring probe and cable

Supplier: 3B Scientific

Educational Materials, Electricity/Magnetism, Application: Physics, Adapter, BNC connector to 4 mm Jack plugs with 19 mm spacing.

Supplier: PHYWE

For demonstration of electric fields between electrodes of different shapes. The electrodes have been applied in thin conductive layers on plexiglass plates and the field line images appear in groats placed in a cuvette with 1 to 2 mm castor oil (the cuvette is placed on the plexiglass plate). The cuvette has an annular electrode in the outer jacket and a 4 mm connection sleeve. The cleaning is easy when electrodes resp. plexiglass plate never comes into contact with the oil. Suitable voltage source: High voltage generator 0 to 25 kV or Van de Graff generator.

Supplier: 3B Scientific

Highly evacuated electron tube for determining the wavelength of electrons as a function of the anode voltage from the radii of the diffraction rings and the distance between the lattice planes of graphite (Debye-Scherrer-diffraction) and rendered visible on a fluorescent screen. Also intended for determining the wavelengths of monochromatic radiation at different anode voltages from the radii of the diffraction rings and the lattice plane spacing of graphite, as well as confirming de Broglie’s hypothesis.

Supplier: CORNELSEN EXPERIMENTA

Bare wire in a roll, on a plastic former.

Supplier: PHYWE

Used to detect thermal radiation, visible light and ultraviolet light. The sensitivity is wavelength dependent in the range 150 nm-15 µm. The output voltage is closely proportional to the incident radiant energy. Suitable for measuring small temperature differences. Quick stabilization, 2-3 p. Consists of 16 series-connected thermocouples placed in a conical reflector. The elements are protected by a high-gloss metal cylinder, which is fitted with a removable protective glass at the front. Suitable for use with, for example, microvolt amplifiers 765-1293 in conjunction with demonstration instruments 765-1247 or for connection to Phywe's large analog or digital demonstration multimeters. Comes with protective tube and gap.