KVD Technologies Physics Exhibits

PHYSICS

Bernoulli's Demonstrator

Demonstrates the lift force of air.

Burping Whirl

Demonstrates the principle of how a black hole bends time and space.

Crazy Magnets

Illustrates the principle of magnetism — opposites attract and similar repels.

Bernoulli's Blower

This Exhibit demonstrates Bernoulli’s Equation. A strong steady jet of air, created by the high powered fan and channeled through a tube, will hold a light ball in the air. This is what really happens! The stream of air, moving at a high speed through the tube has a lower pressure than the surrounding stationary air. If the ball starts to fall, due to gravity, the difference in pressure between the top and the bottom of the ball is sufficient to keep

it in position. Even if the angle of the tube is changed the effect is the same.

KVD Technologies Physics Exhibits Colour Generator

Electro Magnet Rotating Field

By rotating the electro magnet the compasses change direction to indicate the direction of the magnetic field.

Floating Magnets

Illustrates the principle of magnetism where devices with similar polarity repels each other resulting in the upper disk “floating”.

Galileo's Pendulum

A pendulum is a weight suspended from a pivot so that it can swing freely. When a pendulum is moved sideways from its equilibrium position, it is subject to a restoring force due to gravity that will accellerate it back towards equilibrium position. When released, the restoring force combined with the pendulum's mass causes it to oscillate about the equilibrium position, swinging back and forth. The time for one complete cycle, a left swing and a right swing, is called the period. A pendulum swings with a specific period which depends (mainly) on its length.

Induction Demonstrator

Three exhibits in one. One transformer is used to heat a nail becoming evident as the nail turns red. The next transformer is used to melt wax. The third transformer is used to levitate aluminium disks by induced eddy currents. The aluminium disks also demonstrates Lenz’s Law.

Colour Generator

Demonstrates the effect of mixing colours.

KVD Technologies Physics Exhibits Induction Demonstrator

Jacobs Ladder

A bolt of electricity travels up two rods and creates a lightning effect.

Magnetic Field with Needles

Needles point in the direction of magnetic field lines as the handle is turned.

Lenz' Law

A piece of steel and a magnet of similar weight are placed inside identical non-magnetic aluminium tubes. When the tubes are flipped upside-down the steel falls to the bottom with minimal resistance while the magnet travels significantly slower due to induced eddy currents. Slots are cut in the tubes in order for the steel and the magnet to be visible.

Pumping Magnets

Illustrates how a rotating magnet can be used to attract and repel other magnets to realize a pump.

Rotating Magnets with Iron Filings

Iron filings are oriented in the magnetic field produced by rotating magnets.

Rotating Electro Magnets with Compasses

By rotating the electro magnet the compasses change direction to indicate the direction of the magnetic field.

Spinning Magnets

Illustrates the principle of magnetism. Opposites attract - similar poles repel. This is also the principle of an electric motor. (Rotor and Stator).

Statics Demonstrator

Illustrates the effect of static electricity on polystyrene balls.

KVD Technologies Physics Exhibits Statics Demonstrator

Steady Hand

This exhibit is to test your steady hand. Press the white button. Try to guide the ring through the obstacle circuit without contact between the ring and the bar. If contact takes place the siren and lights will go on. Don’t give up, try to finish the circuit.

Tesla Coil

A Tesla coil is a type of resonant transformer circuit that is used to produce high voltage, low current, high frequency alternating current electricity. The generated electricity is discharged via a metal dome.

Thermal Insulators and Conductors

Thermo chromic paper is a type of paper that is very sensitive to a change in temperature. When the paper is exposed to a sudden change in temperature, discolouration of the paper occurs. The change of the papers colour depends on the affected area and the temperature of the object that is brought into contact with the thermo chromic paper.

Vortex

A vortex is generated in a container filled with water the suction power of which is illustrated by a ball sucked down to the bottom.

Wind Tunnel with Wing

Demonstrates lift generated by aerofoil.

Take a Seat

This exhibit demonstrates how pressure is distributed by surfaces covered by different objects including nails, balls and pegs.

Archimedes' Screw

Archimedes' Screw consists of a helic (or screw) inside a cylinder with both ends open. This helical surface surrounds a central cylindrical shaft inside a hollow pipe. The lower end of the pipe is placed under the surface of water at a slant. As the handle that is attached to the helix is turned small amounts of water slowly raises in the wells which is formed by the side of the cylinder and the surfaces of the helix. This water will slide up in the spiral tube until it finally pours out at the top of the tube. This screw was used mostly for draining water out of mines or other areas of low lying water.