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A metaphor is the literary technique used to compare one thing with another by saying that it is that thing. For example, Alfred Noyes's poem, 'The Highway Man', begins with three metaphors: 'The wind was a ...

When two atomic nuclei are heated to a very high temperature and high pressure, for example inside a star, their nuclei can join to make a larger nucleus. Energy is released when this fusion takes place and ...

The formula for efficiency is: efficiency = (useful energy / total energy) Therefore, first we must find the total energy which is the sum of all of the branches of the Sankey diagram. So take the energy spe...

Scientists originally thought that atoms were like a 'plum pudding' in that they were a sphere of positive charge with negatively charged electrons scattered about inside it. This was because they observed f...

The imperfect tense is used for an action that was ongoing in the past (Je lisais un roman = I was reading a novel). These verbs are often incomplete, hence, imperfect. An example of this is the sentence:Je ...