Color Illusion

The applet shows a central black dot and a circle of colored dots around. You are to concentrate on central dot. You will start seeing some moving dots of a color which in not there at all. With choice of 8 colors by slider you can enjoy the illusion. (Click on screen and choose color by slider and start animation by click of the button). This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com My explanation for the illusion. When one stares at a color for some time and then look away one sees opposite color. This may be due to fatigue of the eye. Here instead of looking away the dots are moved. The pair of opposite colors are (Black-White, Red-Cyan, Green-Magenta & Blue-Yellow). All pairs may be seen. Dr Vasant Barve, 18 December 2013, Created with GeoGebra

Crank & Slider Mechanism

This mechanism is used to convert rotary motion to translatory motion and visa-verse. The slider moves with crank head and hence piston performs Simple Harmonic Motion(SHM) The applet shows this graph of piston head. Click button to start animation. This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com The applet uses trace of a point which moves in x direction with piston and in y direction with theta the angle of rotation. Dr Vasant Barve, 14 December 2013, Created with GeoGebra

Atomic Stuctures

Atomic Structures Simple models of atoms are shown in this module. Atoms of elements Hydrogen to Calcium are shown in this applet. Click the required element and then click to start the animation of electron movement. This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com This applet is made by GeoGebra. The applet uses radio button with exclusive command. The protons, neutrons and electrons are drawn by sequence command. For queries write to vasantbarve@gmail.com Dr Vasant Barve, 13 December 2013, Created with GeoGebra

Dipotsav

Dipotsav Dipotsav = A polygon is drawn. On each side a lamp is drawn as a semicircle in which two semicircles are drawn. The flame is drawn by two sectors of circle. On click flames are lighted by series of sectoral lines. Click on the screen. This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com This applet uses sequence command to draw various components of the lamps. Dr Vasant Barve, 6 December 2013, Created with GeoGebra

Fish by parabolas & ellipses

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

Bhaskaracharya Magic Square

Bhaskaracharya Magic Square There numerous ways to get equal sum as shown in a table. This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com send your querries to vasantbarve@gmail.com Dr Vasant Barve, 7 April 2013, Created with GeoGebra

Demo of ( A + B )^3 Small blocks are brought together to make a big block.

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

New Year Greeting 2013

Dear friends,
For a peacock feather, choose n = 1 and press the play button.
For a flower, choose n = 4 or more.
Wish you all a Happy New Year 2013.

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

Dr Vasant Barve, 4 January 2013, Created with GeoGebra