After watching Tarkovsky's film "Andrei Rublev" you will write an essay about a symbol used in it. Here is a paragraph about symbols from the Princeton Encyclopedia of Poetry and Poetics by Preminger, ...

The exact keys that you must press to create the @ (At) symbol vary depending on your operating system (Windows or Mac), the configuration language of your keyboard and whether or not your laptop has ...

The symbol for magnesium is Mg, and sulfuric acid is a compound containing sulfur, oxygen, and hydrogen. Its formula is written: H2SO4. So we write Mg plus H2SO4. An arrow shows the direction of ...