When we write sentences, we always use a capital letter at the start and and a full stop, question mark or exclamation mark when we end a sentence. We also use capital letters for I and for proper ...

Photolithography allows the construction of arrays with extremely high information content. Because the arrays are constructed on a rigid material (glass), they can be inverted and mounted in a ...

A dictionary is a list of words or phrases and their definitions (what they mean). Dictionaries are arranged in alphabetical order. They help you to spell or understand any new words, so are a ...