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Olbers' paradox is a thought experiment that arises in cosmology* which shows that our universe does not fit the "Static Newtonian" model.
Sir Isaac Newton...

To write a good introduction, first re-read the question and underline any key phrases - try to really understand what the question is asking.

In your introduction you need to outline what you...

"Integration by parts" is one of several methods in our arsenal that we can use to integrate a function f(x). It involves expressing f(x) as the product of tw...

On History Paper 1, you'll be asked to analyse a number of sources for their "origin, purpose, values and limitations". When done correctly, these questions can be easy points as long as you...

Elimination: Removal of the extraneous variable (e.g. noise)

Constancy: Keeping the extraneous variable constant between two or more conditions (e.g. equal levels of noise)

Counter-bal...