Recent Projects in Math projects!

Scratch2_Attractor

Scratch2_ Attractor ------------------------------------------ A new Strange Attractor ! http://scratch.mit.edu/galleries/view/59341 New creation for Scratch ------------------------------------------- Better with pen1 or pen2 I like : Ex3 Pen1 Vcolors4 Ex9 Pen2 Vcolors8 Ex11 Pen2 Vcolors10 Ex17 Pen1 Vcolors2 Ex21 Pen1 Vcolors6 Post your discoveries. ---------------------------------------------- Automatic zoom + Initial Colors ------------------------------- 0 No music 1 Nino Rota ( Movies Theme short extract)

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....

Scratch1_Attractor

Scratch1 Attractor ------------------------------------------ A new Strange Attractor http://scratch.mit.edu/galleries/view/59341 This 's a new attractor a exclusivity for Scratch (download for the equations) ------------------------------------------- I like : Par8 Pen2 Z9 Par12 Pen3 Z6 Par14 Pen1 Z3 Par17 Pen2 Z7 Par20 Pen1 Z6 Post your discoveries. --------------------------------------------- CREDITS: Audacity NiD and nevit for the link FractMus 2000 (GPL License) FractMus 2000(Fractal Music Composition Software) generate note using algorithme ----------------------------------------------- Music: 0 No music 1 Sci-Fi 2 Celesta 3 Xylo Make with FractMus and Audacity !

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

number recognition

reads numbers using refrence points. the numbers have to be white with a black bacground or visa verca but otherwise it should sucesfully read any font. at the start it won't recognise anything. if ?number? shows on the screen, then click "learn, select the number that it is and it will add it to it's memory.

weight physics

scales can tell the combined weight of all the weights on top of them

file decoder V4.

decodes messages from number strings to letters. the message can be sent via email, memory stick/pen and msn. decodes messages from DC's V4 coder. does not work online because of the lists.

File coder V4

The new V4 file coder from DC uses lists to display type instead of variables, allowing for potentially infinite length messages without the need for unhelpful "ask" blocks or difficult text editing. Backwards compatable with V3 as long as the message is not longer than V3's capacity. Use this project to make coded messages that are decoded by DC's V4 decoder at the other end. does not work online because it contains lists.

JpStringArt_2

Another String Art : 2.112 patterns ************************************ Choose the parameters : n ; d ; Initial(color) ;colors(number of colors) and press the green flag. ************************************ First look at these parameters : n=91 d=1 n=73 d=4 n=51 d=8 n=5 d=5 n=4 d=13 n=61 d=15 n=7 d =23 *********************************** Please send me, your better parameter ! ********************************** For other StringArt : http://scratch.mit.edu/galleries/view/59407 *********************************** Mathematical notes: This is a new creation for Scratch ! A Maurer rose of the rose r = sin(nθ) consists of the 360 lines successively connecting the above 361 points. Thus a Maurer rose is a polygonal curve with vertices on a rose. But, if you explore with Scratch and not choose the rose r= sin(nθ) ... :) mathjp

Hénon_Attractor

Hénon Attractor ------------------------------------------ A new Strange Attractor http://scratch.mit.edu/galleries/view/59341 Stange Attractor of Hénon (french mathematicien). I use his equations(1969) download for more informations in the script. ------------------------------------------- I like : Par9 Pen3 Z12 Par15 Pen3 Z3 Par17 Pen1 Z3 Par33 Pen2 Z5 Post your discoveries. --------------------------------------------- CREDITS: Audacity NiD and nevit for the link FractMus 2000 (GPL License) FractMus 2000(Fractal Music Composition Software) generate note using algorithm. I use Hénon Attractor. ----------------------------------------------- En français. Une référence est le très beau livre d'Ivar Ekeland "Le Calcul, l'Imprevu" Editions du Seuil (1984). Page 57-58 : "Avec les moyens modernes, il est facile et amusant de faire ce travail (étude de la transformation proposée par Hénon). Le lecteur est invité à s'y essayer ... "

Happy Pi Day!

I almost forgot, oh well, I made it in time! I made a worse version of this last year at http://scratch.mit.edu/projects/maki/118125 and this time I used sprite detection, and a circle.