Storing Potatoes. 1  1. Sort your potatoes. 2  2. Store healthy potatoes in a dark, dry place. 3  3. Keep the temperature cool.  4. Check your potatoes periodically for signs of 1  spoilage. 5. Cure your potatoes for long-term storage.
A period is a horizontal row in the periodic table. Although groups generally have more significant periodic trends, there are regions where horizontal trends are more significant than vertical group trends, such as the f-block, where the lanthanides and actinides form two substantial horizontal series of elements.
Not all mathematical functions have periods. Some functions, such as f(x) = x, have no recurring values; every value of x gives a different value of f(x). The most well-known periodic functions are the trigonometric functions sine and cosine, both of which have a period of 2pi. The tangent function, tan(x) = sin(x)/cos(x), is also periodic, with a period of pi.