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A sense of threat, and possibly even death, is evoked in the movement’s harmonic workings through the tritone. The first explicit tritone interval is exploited in bars 23-4, between A natural and Eb, when...

Confidence is key, and confidence comes, more often than not, with practice. Therefore, I would recommend printing out some of the practice questions from the exam board's website (provided their availabl...

The photoelectric effect is the emission of electrons from a metal surface when light is incident on it. When a photon (a light particle) hits the metal surface, it interacts with the metal's electrons. T...

Stationary points are found by considering the points at which the gradient of the function equal zero. For the above, you need to employ the quotient rule, since both numerator and denominator are f(x), ...

Unseen passages can be daunting, but they are designed as an opportunity for you to show your skills to the examiner. Try and think of them as an invitation to really engage in some close analysis of writ...