Fowler - University of Virginia
See also our Applets!
This is a collection of Flash animations to make learning
physics easier! They were created by myself and my students Jacquie Hui Wan
Ching and Heather Welch, and Michael Timmins and Aris
Stylianopoulos, in the summer of 2003.
Newton's Mountain: Newton imagined shooting a
cannonball horizontally from a mountaintop above the atmosphere. With sufficient speed, it would circle the Earth..
Pythagoras' Theorem fast by moving triangles around with your mouse.
Eclipse of the Moon: a
short movie of the Moon moving through the Earth's shadow, and how it appears
Ptolemy's Epicycles for Inner Planet Motion: actually a simplified version,
with just the basic epicycle idea illustrated.
Ptolemy's Epicycles for the Outer Planets: again,
just the basic epicycle idea.
Earth-Mars Line of Sight in Two Models. Viewing the motion of Mars against the starry background: How
the Ptolemy model and the Copernicus model predict the same direction, hence the same path. (We slightly simplify--taking both models in the circular orbit approximation,
as portrayed in Copernicus' illustration.
Kepler's Laws: construct
your own planetary orbits and check Kepler's Laws!
The Inner Planets: a
movie of the inner planets in orbit ... and here are the Outer Planets.
Galileo's "Compound Motion": Galileo realized that
the motion of a projectile was a compound of constant speed horizontal motion and constant acceleration vertical motion
-- we give an animation of his diagram.
Trip to Mars!: Try your skill at shooting a probe
from the Earth to a close encounter with the Red planet.
Jupiter Slingshot Find
out for yourself how a gravitational boost from a moving planet can get you to
the far reaches of the Solar System.
The Doppler Effect Animation
shows expanding rings of sound, and a microphone clicks as each ring
hits. Dutch Version Hungarian
Carnot Cycle: the Carnot
engine in action! You can slow it down to see what's going on, and choose
other values of pressure and volume to vary the cycle.
an animation of the beautiful experiment to detect the aether that found
famous clock bouncing light between two mirrors is animated, to show just why
taking the speed of light the same in all inertial frames leads inevitably to
Young's Interference Experiment
An animation that builds up the two-slit interference pattern by adding the
two waves sequentially for a series of points on the screen.
Basic Young's Experiment
Without bells and whistles.
Wave Pulse Transmission
Two strings of different linear densities are joined, a wave pulse is sent towards the join, the reflection/transmission is shown.
Phases of Venus An
animation of Venus in orbit, with the sunlit portion of the surface viewed from
different perspectives. (htm file)