If you are business minded, a nurse that makes house calls may be the business opportunity for you. In fact, this is historically how most nurses practiced until the 1940s. It is an area with huge growth potential.
Smell is chemistry, and the chemistry of old books gives your cherished tomes their scent. As a book ages, the chemical compounds usedâthe glue, the paper, the inkâbegin to break down. And, as they do, they release volatile compoundsâthe source of the smell. A common smell of old books, says the International League for Antiquarian Booksellers, is a hint of vanilla: âLignin, which is present in all wood-based paper, is closely related to vanillin. As it breaks down, the lignin grants old books that faint vanilla scent.â
The small molecules that combine to make up cellulose are sugar molecules; thatâs the key to the absorbency of paper towels. Think how easily sugar dissolves in water. When you get a paper towel wet, the water molecules rush in and cling to the cellulose fibers. Thatâs why paper towels are great at picking up spills.