Play and experiment with the growing collection of materialworlds simulations - and get a feel for the forces at the heart of the physical world.
Live interactive physics simulations - downloadable for use offline - let you explore the Solar System (orbits, seasons, gravity, tides and satellites), play snooker (on a full size table) and experiment with "Laws of Motion" simulations (free worksheets provided for pendulum, Newton's cradle, terminal velocity and Galileo's balls - as dropped from the Leaning Tower of Pisa).         With real-time visualisation of forces and velocities (as arrows on each object as they interact or are pulled around with the mouse) and scrolling graphs recording what happens, materialworlds gives a real feel for how the physical world works.
Solar system
tilt and zoom your view of the planets as they orbit the Sun... change the Earth's tilt and wreck the seasons... nudge a satellite into a new orbit ... track the changes in tidal forces with the phases of the Moon ... switch off gravity and see what happens.
   
play snooker 
and follow the changing forces on each ball through cascades of collisions.

   
laws of motion
Galileo's balls... terminal velocity... bouncing ball... pendulum... Newton's cradle...

This PIRA Webring site is owned by
Jonathan Lawrence.

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