Listing all results (397)

Would you take this bet?

This video uses a gambling scenario to consider taking risks. Some elements of probability theory are introduced.

World's longest vertical straw

This video explores how far a liquid can be sucked up a tube. The theoretical maximum if a vacuum is created above the liquid is 10.3m.  How well do they do and does the diameter of the tube affect the results?

What's in a candle flame

This video uses two oppositely charged metal plates to demonstrate that a candle flame contains ions. Positive ions are attracted to the negative plate, while negative ions the positive plate. Even when the candle is extinguished, the smoke is attracted to both plates and so must also contain ions.

...

What is NOT random?

This challenging video takes a philosophical approach to discussing what information is. It begins by equating information to entropy. Entropy is explained as the degree of order or alternatively randomness that exists. Examples of ordered information are the arrangement of molecules in DNA, letters in words and...

The truth about toilet swirl - southern hemisphere

This video demonstrates the Coriolis effect. However, explains that much of what we see in terms of rotating water in either the northern or southern hemispheres is mostly due to other angular momentum sources in the body of the water.

An explanation of the Coriolis effect uses a scientific model (thought...

The original double slit experiment

The video explores people’s understanding of what light is. A wide range of misconceptions and incorrect ideas are given. Newton thought that light consisted of particles, whereas Huygens thought light was a wave. Using a cardboard box to recreate Thomas Young’s double slit experiment the wave properties of light...

The most amazing thing about trees

This video applies physics to explain how trees can move water up their trunks over 10m, which is the natural limit of sucked water. The ideas of transpiration, osmotic pressure and capillary attraction are considered.  The explanation shows how a negative pressure is be obtained from the intermolecular forces and...

Quantum entanglement and spooky action at a distance

This video will challenge students. It shows how particle spins of entangled particles and employing the conservation of angular momentum, can be used to solve a problem that Einstein found rather frustrating. The problem: If we measure the spin of one of the particles we automatically know the other, because it...

Pyro board 2D Rubens' tube

This video explains how a Ruben’s tube can be used to demonstrate standings waves, nodes and antinodes (sound).  The flow of flammable gas is affected by sound waves (vibrations). A 2D model of a Ruben’s tube is used to demonstrate a series of standing waves.

Physics Nobel prize 2011-Brian Schmidt

This video explores the fate of the universe from an historical position. It explains how the rate of expansion of the universe can be measured.

Pages

View all publishers