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The centre of gravity (or centre of mass) of an object is the point through which an object's weight will act through. In other words, the object will always balance around this point.

Olbers' Paradox is a famous problem which baffled many scientists in the early 19th century. 

The German astronomer Olbers (and many of his colleagues) made assumptions that the universe ...

Capacitors are an electrical component made up of two plates with an insulator between them.

Electrons flow onto one of these plates as current flows around the circuit. This gives one of...

In Physics, there are two types of numbers: scalars and vectors. Scalars are just a normal number, as we are used to. Vectors also have a direction associated with them. Thus, variables like temperatur...

There are three methods of energy transfer that we need to learn: conduction, convection, and radiation.

1. Conduction:

Heat is thermal energy, and in solid...