Dr. Tim: So this is the periodic table and each letter on it represents a different element. We call these letters symbols. And an element is a pure substance made from only one type of atom.

Often the expression of joy or affection, illustrated letters represent an irrepressible urge to picture language. They are evidence of the writer’s use of words and images to amplify the form and ...

When we think of writing systems we likely think of an Alphabetic writing system, where each symbol (letter) in the alphabet represents a basic sound unit, such as a consonant or a vowel.