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There are 3 different outcomes for the fate of our universe:if the average density is smaller than what is known as the critical value, then the universe will carry on expanding fo...
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...
X-Rays are a form of electromagnetic radiation similar to gamma radiation except X-Rays are produced when an electron is slowed down from a high velocity and gamma waves are produced from radioactive m...
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