Monthly Archives: May 2018

South Pointing Chariot

This chariot was first made by a Chinese king who asked his men to build a chariot which always points in the direction of his kingdom, no matter where the chariot went. And it doesn’t use any compass but differential gears to keep the man in the same direction. It […]

Read More

Spherical Tetrahedron

The interior angles of these triangles do not add to 180 degrees (like planar triangles). The tetrahedron is formed by joining 6 great circles (circles whose radius is equal to the radius of the sphere).

Read More

Triangular Wave car

This car draws triangular wave when it moves! Triangular wave means that the y-component is proportional to the x-component  (which is the distance traveled by the car). The y-component is the half circumference of the middle gear and the x-component is the circumference of the car wheel. In our case, […]

Read More

Sine Wave Car

BASIC TRIGONOMETRY IN A CAR!!! This special car draws a sine wave as it moves! On y-axis, we have the sinθ component of the circle as shown in the upper figure, and on x-axis we have the movement of car which is rθ. Therefore, the graph would be between (sinθ, […]

Read More