Therefore, an injury to the brain that does not penetrate very far is more likely to injure gray matter than white matter. This arrangement is reversed in the spinal cord; gray matter makes up the center of the spinal cord, while white matter makes up the outer portion.
The National Minimum Wage (NMW) is the minimum pay per hour that most workers are entitled to by law. If you employ a personal assistant, you may have to ensure you pay them NMW.
What does the nm mean on WAVELENGTH 650nm? The KGB Agent answer: The initials nm in 650nm stand for nanometers, it refers to wavelength, and is 1 billionth of a meter long. In the case of 650nm we're talking about a visible section of the electromagnetic spectrum, and in particular it describes light that is red. A red light laser pointer that produces 650nm light costs about $15.