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Diegetic sound is a noise which has a source on-screen. They are noises which have not been edited in, for example dialogue between characters or footsteps. Another term for diegetic sound is actual sound. N...

Differentation is a type of calculus that allows us to work out the rate of change. For example, if we have a straight line graph such as y=2x, we know that the gradient of the line is 2. If we take a curve ...

Unsaturated hydrocarbons contain at least one carbon carbon double bond , the simplest is the alkene. They are more reactive than saturated hydrocarbons because they have the ability to undergo addition reac...

The perfect tense is used to for completed actions in the past. For example, le semaine dernier je suis allé en France would translate to last week I went to France. The imperfect is used for incomplete acti...

The perfect tense is used to describe an action or event that occurred in the past. For example, you would use the perfect tense to express the phrase "I played football yesterday" The perfect tens...