Supplier: GLASWARENFABRIK KARL HECHT

Five communicating glass tubes with different inner diameters. Used to show capillary forces and how they are affected by the inner diameter of the pipes.

Supplier: GLASWARENFABRIK KARL HECHT

Five glass tubes of different shape and inner dimensions. Down to each other. When filling the liquid in the pipes, it is clear that the height of the stowage in the tubes. pipes are independent of the design of the pipes. Comes with foot.

Supplier: Thermo Fisher Scientific

Replace metal-type troughs with the polypropylene pneumatic trough.

Supplier: DIDALAB

The diameter of the beam is adjustable from 1 to 12 mm.

Supplier: DIDALAB

High quality professional gas laser, Class II

Supplier: DIDALAB

Educational Materials, Optics, Application: Physics, Polariser, calibrated, set in an M49 ring

Supplier: DIDALAB

Economical, recent design of prismatic optical bench

Supplier: DIDALAB

Educational Materials, Optics, Application: Physics, Diode laser, blue, Class II

Supplier: DIDALAB

Triangular, cast aluminium optical bench

Supplier: DIDALAB

Extremely luminous beam, ideal for classroom experiments. Class IIIa (5 mW Power)

Supplier: DIDALAB

Educational Materials, Optics, Application: Physics, Translucent screen 20×20 cm, attached to a rod with Ø 10 mm

Supplier: DIDALAB

These wide diameter lenses are used for easy classroom experiments and for aberrations underscoring.

Supplier: DIDALAB

Optical glass components are manufactured with high accuracy polishing and flatness tolerance.

Supplier: DIDALAB

This comprehensive optical pack allows you to implement and study the basic principles of polarisation of light.

Supplier: DIDALAB

Prism made of standard optical glass with index near to 1,52. Equilateral dispersing prisms are used for wavelength separation applications. Intended for demonstration experiments of light dispersion.

Supplier: Aesculap

Educational Materials, Waves and Oscillations, Application: Physics, Tuning fork, 440 Hz (a¹)

Supplier: KVANT LIFE SCIENCE

Equipment for laser sound transmission experiments. The included microphone, tape recorder or function generator is used as the sound source. The rate consists of.

Supplier: OSRAM

Equipment for demonstrating photoelectric power and determining Planck's constant. A photocell is equipped with filters that only transmit light of a certain wavelength. The photocell is illuminated with light from a Hg lamp. The potassium cathode then emits electrons that pass over to the unlit anode. Over time, a voltage arises that prevents new electrons from reaching the anode. The resulting voltage is measured with a measuring amplifier and a voltmeter. The measurement is repeated with filters for different wavelengths. Photocell and Hg lamp are equipped with magnets at the bottom for stable installation on the mounting plate. List of equipment:

Supplier: KVANT LIFE SCIENCE

New optical models for laser optics (15 parts). Consists of.

Supplier: ELWE LEHRGERAETEBAU KLINGENTHA

Cone-shaped pressure chamber speaker with high power resistance. Used for general acoustic tests, eg together with resonator 765-0080. Connects to a tone generator with amplifier. Melt protection prevents damage during overload. Technical data.

Supplier: KVANT LIFE SCIENCE

The advantages of a diode laser compared to a HeNe laser are mainly small format, low power consumption and long service life, as well as the possibility of electronic modulation. The laser is modular in the range 100 Hz 20 MHz. Dimensions.

Supplier: ELWE LEHRGERAETEBAU KLINGENTHA

Motor with rotor that lacks iron and thereby has a very low moment of inertia, which in turn enables fast start and stop or change of direction of rotation. The time from start to maximum speed (3000 rpm) is only 11 ms. Can be used for experiments with mechanical oscillations. The motor is most conveniently operated with a function generator.

Supplier: ELWE LEHRGERAETEBAU KLINGENTHA

Used e.g. to form homogeneous magnetic fields. Two identical coils placed in parallel by means of three fastening devices. The coils can be connected in series or in parallel. To determine e/m, the wire beam tube is placed between the Helmholtz coils in such a way that the visible beam is perpendicular to the homogeneous magnetic field. The generated magnetic field can be measured with a magnetic field meter with hall elements. Specifications.

Supplier: ELWE LEHRGERAETEBAU KLINGENTHA

The exercise oscilloscope is placed at the Helmholtz coils so that its main axis coincides with the axis of the coils. A sawtooth-shaped voltage is applied to the deflection plates of the oscilloscope so that a smooth horizontal line appears on the screen. Let direct current pass through the coils at a preset anode voltage and adjust the intensity of the current so that the line is focused at one point. The specific charge e/m of the electron can be calculated from the measured values ​​of the anode voltage and the current through the coil.

Supplier: ELWE LEHRGERAETEBAU KLINGENTHA

Franck-Hertz's experiment is one of the best ways to show the quantum properties of atoms. The experiment verifies the excitation energy of the Hg atoms through collisions with free electrons. Franck-Hertz tubes consist of an oxide cathode, gallery anode and a collection electrode. The evacuated tube contains a drop of Hg. Before starting the measurements, the pipe must be heated to 200 °C, partly to increase the pressure of the Hg steam and partly to obtain a sufficient probability of collision. When the temperature in the tube has become constant, the cathode is heated and a direct voltage which can be varied in the range 0 to 50 V is connected between the cathode and the anode. When the counter voltage is set to about -1,5 V and the anode voltage increases slowly from 0 V, the electrons will soon reach speeds in the acceleration range of the tube so that an increasing part of the primary current reaches the collector electrode. As the velocity of the electron flux approaches the lowest excitation level of the Hg atoms (4,9 eV), the electrons of the Hg atoms are capable of leaving the atoms and thus losing some of their velocity. The collector current drops to a minimum value. The Hg atom then emits its 253,7 nm ultraviolet line and then returns to its normal energy level. As the acceleration voltage increases further, the current reaching the collector electrode will increase again. This process is repeated periodically many times.

Supplier: CORNELSEN EXPERIMENTA

Educational Materials, Waves and Oscillations, Application: Physics, Club for the tambourine

Supplier: CORNELSEN EXPERIMENTA

Educational Materials, Waves and Oscillations, Application: Physics, Monochord

Supplier: CORNELSEN EXPERIMENTA

Educational Materials, Waves and Oscillations, Application: Physics, Strings for monochord

Supplier: 3B Scientific

Educational Materials, Electricity/Magnetism, Application: Physics, Analogue oscilloscope, 30 MHz, microprocessor controlled

Supplier: CORNELSEN EXPERIMENTA

Educational Materials, Mechanics, Application: Physics, Lead ball, 25 mm