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.
What intensity means in sports is to have great energy, concentration and vehemence. The word intensity here is not synonymous with strength, amplitude, or level, as it som â¦ etimes is in colloquial speech.   For example, the intensity of pressure is meaningless, since the parameters of those variables do not match.