These are the some of the more popular and fun applets in
Physics 2000, including previews of some that are not yet integrated
contextually into the site.
See how evaporative cooling works, both in your coffee cup and
in Bose-Einstein Condensation.
Another piece from the Bose-Einstein Condensation pages.
See how lasers can be used to "cool" matter by slowing down
atoms. In three parts.
A demonstration of how multiple laser beams can be used to actually
cool and confine atoms.
This applet demonstrates how a microwave field makes a
water molecule oscillate back and forth, leading to heating in food.
Try "nuking" some marshmallows in a microwave oven and see how they
cook at different rates in different parts of the oven.
See conceptually how the electromagnetic field of one charge will
move a dipole molecule (water) around like a compass needle.
The Two-Slit Experiment
Play with the classic "two slit" experiment using lasers to
show interference patterns.
In this one, shoot a stream of electrons through the two slits
and see how the interference patterns still appear. How bizarre,
Stretch and shift two waves and see how they add together to
interfere both constructively and destructively.
X-rays and CAT Scans
Amaze your friends! A fun demonstration of what it looks like to
"see" in the x-ray portion of the spectrum.
See how tungsten atoms are used to produce x-rays using both
"Bremsstrahlung" and "K-Shell Knockout".
A side-by-side comparison of the Schrödinger and Bohr models
of the hydrogen atom and how it absorbs and emits photons.
Electromagnetic Waves and Particles
Place negatively charged particles around a positively charged
nucleus and see how the particles "fall" into stable orbits. Also
demonstrates gravitational orbits.
"Particle on a Spring" shows how an oscillating charge propagates
a wave through a single "line" of a field.
Put down "test charges" in an electromagnetic field to see
how the pattern of the field appears.
In this version you can add, modify, and drag the charges that
create the field to see how the test charges are affected.
Television & Laptops