The Relay Introduction Relays are switches that can be used to turn on and off high power devices likes fans and bulbs.

Objective Perform a series of experiments with the LED and understand how to: Create a basic circuit with an LED, battery and a resistor.

Objective Perform a series of experiments with the LED and understand how to: Create a basic circuit with an LED, battery and a resistor.

States of matter Intuitively, when we look at something, we know if that a “thing” is a solid, liquid or gas.

Most of the galaxies in the Universe have a spiral shape. It’s not clear why that is so, but that is not the point.

Most of the galaxies in the Universe have a spiral shape. It’s not clear why that is so, but that is not the point.

Drawing a flame requires keen observation, and it’s easy to do too - a match is never far away.

Water was one of the fundamental elements, till it was not.

An element is something that cannot be split further into something that is simpler.