Infinite Sets. If you continue to study this subject you will find discussions about infinite sets, and the idea of different sizes of infinity. That subject has special names like Aleph-null (how many Natural Numbers), Aleph-one and so on, which are used to measure the sizes of sets.
For decades, glossy paper, the type used in magazines, was made using a white clay called kaolin (named after the Chinese region Kao-Ling where it was mined to produce porcelain).
Inexpensive paper made primarily of mechanically ground wood pulp rather than chemical pulp is known as newsprint. It has a shorter lifespan than other papers but newsprint is cheap to produce in bulk and is the least expensive paper that can withstand normal printing processes. Newsprint has a basic size of 24 x 36. Also Known As: newspaper. Examples: Typically used for newspapers, newsprint may also be used for comic books, some newsletters and trade magazines and buy/sell/trade classified ad weeklies. Its wood pulp origins may also make it more desirable for garden and composting use than other papers.