Mechanical properties of some materials change dramatically with temperature. These changes have entertaining effects on everyday objects by taking them from room temperature 300K to the temperature of liquid nitrogen 77K.
Place...
One falling domino knocks down two, which in turn knock down three, etc. Use it to model cascade signaling.
Twenty five rows of dominoes are set up in front of the first domino. Each successive row is comprised of one additional...
Dull at room temperature, rings clearly after immersion in liquid nitrogen.
A lead bell, dull sounding at room temperature, rings brightly when cooled to liquid nitrogen temperatures.
A lead bell at room temperature is dull in...
Video of our demo in action https://www.youtube.com/watch?v=wUpOlqbHcjI
The following is a sequence of experiments that can accompany a standard lecture on electromagnetic waves. The entire sequence is quite long and you may not want to do...
Louis de Broglie predicted that matter under certain circumstances would exhibit wave-like properties. A proof of this is the repeat of X-ray diffraction experiments using electrons, whose de Broglie wavelengths at high accelerating...
10 cm microwaves are used for the demonstration of travelling and standing waves, reflection, interference, refraction, diffraction, absorption, polarization, tunneling, and waveguides.
The following is a sequence of experiments that can...
When a magnetic field is applied perpendicular to a conductor carrying current, a potential difference is observed between points on opposite sides of the conductor. This happens because the magnetic field deflects the moving electrons...
This demonstration allows you to compare chalk’s compressive strength with its tensile strength.
We use railroad chalk, which although being softer and harder to work, is nice and big and easy to see. A sample is placed in each...
A metal under stress will not fracture straight away, but will deform plastically due to the dislocation of crystal boundaries; this is called creep.
Here we use lead as the test sample because there is significant creep compared...
