Physics

Linear expansion of solid bodies

Principle

Metal pipes made of different materials are heated by passing steam through them. While each pipe is being tested, one end is securely fixed and the other rests on a rotating shaft, the motion of which is indicated with a pointer. The linear expansion of the ...

Volume expansion of gases at constant pressure

Principle

A U-tube manometer with movable branches can be used to measure the expansion of gases at constant pressure. As the heated volume of air expands, the user slides the right branch until the water in the two branches reaches the same height again (p = const ...

Absorption of thermal radiation with a solar collector

Principle

Clamp-on holder 02164-00 is fixed to the aluminium frame of the demonstration board as a holder for a reflector lamp. The absorber plates of solar collector 02165-00 can be used to study how the colour of the absorber affects its function, for example. Magnetic ...

Utilisation of radiant energy with a solar collector

Water warms up as it flows through the fully assembled solar collector. The temperature increase is a function of the flow rate of the water.

Gay-Lussac's law

The electric field strength of a plate capacitor

The potential field of an electrically charged sphere

Principle

The potential measurement probe and the electric field meter can be used to study the equipotential lines around a charged sphere. When held in the radial clamp fixture, the probe can be conveniently swivelled into position along circles around the centre o ...

Uniformly accelerated linear motion

Principle

A measurement carriage is uniformly accelerated by a falling mass. The experiment shows the relationships between the following:

- Distance travelled and the elapsed time

- Instantaneous velocity attained by the carriage after a certain time.

Horizontal and oblique projectile motion

Principle

No demonstration method shows horizontal and inclined projectile motions better than a continuous water jet. The overflow vessel contains about 1 litre of water and gives those doing the experiment enough time to discuss all of the aspects of proj ...

Energy conversion of a roller coaster

Principle

One of the truly exceptional features of the PHYWE magnetic demonstration board for mechanics is the flexible track with which it can be equipped to create track shapes that were previously totally unconventional. The experiment depicted here shows a "roller coa ...

Buoyancy in water on the magnetic board (Archimedes' prin-ciple)

Principle

Extensive bodies have the property of weighing less when they are in water than when they are in air, which you notice when you swim, for example. For this reason, even heavy container ships can swim, although a small pebble immediately sinks. In this ...

Visualisation of radioactive radiation with a cloud chamberwith Peltier cooling

Waltenhofen Pendulum

Principle

When a massive body made of conductive material moves through a magnetic field, eddy currents are induced. According to Lenz’s law, the body is then subjected to a force which is opposed to the cause of the eddy currents, i.e. the motion of the pendulum. The b ...

Rotary motion by turbulent flow - principle of the alternating current meter

Principle

A metal disc rotates on a bearing-mounted shaft in the presence to two out-of-phase alternating magnetic fields. Eddy currents are induced in the disc and forces are imparted onto this current-carrying conductor. Out-of-phase alternating fields also cause the r ...

The background effect

Principle

This experiment should bring the students to the realization that radioactivity is a natural process. Ever since its origin, life on earth has been continuously exposed to ionizing radiation. Radioactive materials in the earth are a major source of th ...