dapontes's Recent Projects

Inclined plane_Galilei

A virtual Lab to compare speed and time at A and B.

Ptolemaic Geocentric Model

A remix of my project about the Geocentric planetary system of Ptolemy (a simplification, thanks Paddle2See). Learn more about this in wikipedia http://en.wikipedia.org/wiki/Deferent_and_epicycle Click on the green flag to start.

Mars- Retrograde motion

Watch Mars' apparent motion across the Earth's sky as the Earth passes in their orbits around the Sun. The retrograde otbits are caused by the overtaking Mars as they orbit the Sun. Thanks forest for the music "Act of Love". Learn more about the retrograde motion in http://en.wikipedia.org/wiki/Apparent_retrograde_motion Press Green Flag to start....

Physics_Gears

A remix of nevit's project about gears. Change the speed (v1) of the first gear (left). Choose the gear (buttons 1, 2 and 3). Learn more about gears: http://en.wikipedia.org/wiki/Gear

Rutherford_experiment_02

Remix of my project....This time I use nine sprites instead of one. A simple model of the Rutherford scattering experiment. Ernest Rutherford was the first to use the idea that matter could be investigated by firing particles at it.

Basic BG (Remix)

A simple remix of nevit's project.

abstract_3D

Thanks mathjp for the fractal music and nevit for background.

Cassini eggs

In mathematics, a Cassini oval is a set (or locus) of points in the plane such that each point p on the oval bears a special relation to two other, fixed points q1 and q2: the product of the distance from p to q1 and the distance from p to q2 is constant. http://en.wikipedia.org/wiki/Cassini_oval (Jean-Dominique Cassini (1625-1712) French astronome). Thanks Paddle2See for the idea/

Cartesian Eggs

René Descartes, a famous French mathematician and philosopher invented the Cartesian coordinates that bear his name, and also discovered an interesting way to produce more egg-shaped curves. A Cartesian Oval is the figure consisting of all those points for which the sum of the distance to one focus plus twice the distance to a second focus is a constant. Thanks to DarthPickley (again) for the idea (diffraction Interference pattern maker v1).

Tesselation_Kangaroos

The idea to make a tesselation and the image of Kangaroo: http://pagesperso-orange.fr/therese.eveilleau/pages/jeux_mat/textes/kangourou.htm

Isochrone Problem

"If from the highest or lowest point in a vertical circle there be drawn any inclined planes meeting the circumference, the times of descent along these chords are each equal to the other" Galileo Galilei in his 1638 masterpiece, Dialogues Concerning Two New Sciences (Proposition VI)

Spiral from Circle_again

Thanks forest for the idea and nevit for the background.

spiral_from_circle

Thanks forest for the music http://scratch.mit.edu/projects/forest/701139

Standing_Longitudinal_Waves

Green flag to start. Green flag and choose demo 1 or 2. Thanks ahaanomegas for the music.

Water waves

Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases. http://paws.kettering.edu/~drussell/Demos/waves/wavemotion.html