If the person is injured in a fall of this sort, recovery is usually slow and less complete. Anything that causes dizziness can lead to a fall -- for example, a sudden drop in blood pressure when the person stands up or gets out of bed at night or light-headedness caused by a medication.
A double-double is defined as a performance in which a player accumulates a double-digit number total in two of five statistical categoriesâpoints, rebounds, assists, steals, and blocked shotsâin a game. The most common double-double combination is points and rebounds, followed by points and assists.
A double bond in chemistry is a chemical bond between two chemical elements involving four bonding electrons instead of the usual two. The most common double bond, that is between two carbon atoms, can be found in alkenes. Many types of double bonds exist between two different elements. For example, in a carbonyl group with a carbon atom and an oxygen atom. Other common double bonds are found in azo compounds (N=N), imines (C=N) and sulfoxides (S=O).