Recent Projects in Science!

Plastic protractor

Tension lines in plastic protractor seen under cross polarized light. When a ray of plane polarised light is passed through a photoelastic material, it gets resolved along the two principal stress directions and each of these components experiences different refractive indices. The difference in the refractive indices leads to a relative phase retardation between the two component waves. The birefringence of the plastic layer shows colored fringes. Also called Photoelasticimetry or photoelasticity.

Magnet

The Home of the Sun and the Moon.

A project by Ahaan Rmx on request. Changes: Self paced Say blocks in Newton Sprite... This is from a Nigerian Myth about the beginning of the Universe using the Sun and the Moon. The story goes on until Isaac Newton asks you a physics question which has to do with the Sun and the Moon. The fairy is a storyteller and the Ocean the Friend of the Sun and Moon. I also have a graphical demonstration of the Force and the Mass relationship. {Also, this my first project that uses lists so I hope you like it}. Please add your valuable comments so that I can improve. This project looks much better in Presentation Mode. To watch it in Presentation Mode, download this project and press the Television on top of the screen and you will be watching the project in a Full Screen View. I have added a color box so that you can chose the color of the line that the pencil draws. Credits: --------- Suggestions of timing: DrSuper and nevit Color Box Inspiration: Project "The Parabolator" by scmb1 Help with list appearance: Paddle2See Music: My Mom, Ivaana, and I. --------------------------------------

Gears

Simple Gears Images of Gears various sizes available as public domain. Here: http://tinyurl.com/yj98zef

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

Balancing Balls

In this fun game your goal is to keep the balls balanced on your board. Score is added up depending on the weight of your balls and how long they are on the board. --Instructions: Click to drop the ball. Hold your mouse down to increase its size. Keep the board balanced! Score will not be added if there are no balls on it, so keep adding them. You can only have 4 balls at a time. --The Physics behind this: This project uses torque and gravitation forces to simulate what would happen in real life. The balls move according to MGcos0. Mass is your weight, with it being in KG. Starting weight is .1 KG. G is Gravity, or 9.8 meters/sec^2. I converted this to .98 units on the grid. 0 is theta, or the degree of the board. The board rotates using torque. Torque is the cross product of force and distance, or FxD. Unfortuantly, this project assumes that the force is always at right angles with the distance, as it takes complicated rotary motion and related rates to fix it. I then added up all of the torques from each ball, and then changed the angle by it. Please love-it! Curators(The-Whiz) Pick 11-19-09 Through 11-20-09 Top Loved 11-20-09 Through 11-23-09

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.

The Isochrone Crash

A remix of dapontes' project. --------------------------------- An isochrone is a line on a map/diagram connecting points from which it takes the same time to travel to a certain (different) point. In other words, a set of points with the property that a given process will take the same time to complete starting from any point in the isochrone. A curved that is formed by a set of points with this property is called an isochronous curve. A mathematician named Christiaan Huygens solved the isochrone problem without calculus, but instead used only Euclidean Geometry! He said: "When a cycloid is put downward, the time when the particle goes and slides and meets the bottom does not depend on the initial position of P from the position P in place of the uniform gravity. But it ignores friction" ------------------------------------------------- Please do not consider this as a remix because I redid the scripting for one of the cars in my own manner and with my own scripts. I even added a lot of features. This is a learning process for me. Thank you, dapontes. Also, extra information can be found on the following link given kindly by mathjp: http://www.mathcurve.com/courbes2d/synchrone/synchrone.shtml

Physix

This is a simple Physics engine that works pretty well it uses only two variables click and drag to draw space to clear pen

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)

Words n' Water

This is an art project which shows water waves and bubbles because of a vibration created by a ball landing on water. I made this project because my Mom kept teasing me about making boring math projects over and over again. When I finished this project, I showed it to her. She told me: "See...you can make interesting projects even without math". I finally told her the truth, telling her that I eventually did use math for the word stamping. CREDITS: ----------- Music -> My Mom, Ivaana. Poem -> S.K. Lindeman COMPLETE POEM: -------------------- Water Sprite, I hear you calling. Deep within the well divine, Drink swiftly for night is falling. Coaxing stars that ever shine, Softer Light that pales the moon, Pale and still, voices are calling, Refract Waves of Celestial Song. By SK Lindeman.

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

standing_wave

A virtual Lab to experiment with standings waves. Try wavelength λ=920, 460, 306, 230...

The Random Walk

We imagine a "game" in which a player - cat starts at the point x=0 and at each move is required to take a step either forward (towards +x) or backward (towards -x). The choice is to be made randomly, determined by the toss of a coin. How far does he get on the average? The step equals 3 (thanks mathjp)