To give blood you must: 1  Be in general good health.  Be at least 17 years old. (If you are 16 you can donate with a CBC consent form signed by your parent). There is no upper age limit as long as you have no health restrictions.
Specific radiative intensity. Specific (radiative) intensity is a quantity used in physics that describes electromagnetic radiation. It is a term used in much of the older scientific literature. The present-day SI term is spectral radiance, which can be expressed in base SI units as W mâ2 srâ1 Hzâ1.
Definition of special. 1  1 : one that is used for a special service or occasion caught the commuter special to work. 2  2 : something (as a television program) that is not part of a regular series. 3  3 : a featured dish at a restaurant the specials of the day.