Report Abuse It is, in general, the hottest month of the year. Report Abuse September and October are the best months weather-wise for SF. The fog stays off shore and the sun shines ... You should have pants and a sweater or jacket along, but it rarely rains.
Bone density (or bone mineral density) is a medical term normally referring to the amount of mineral matter per square centimeter of bones. Bone density (or BMD) is used in clinical medicine as an indirect indicator of osteoporosis and fracture risk.
Density is a measure of how much mass is present in a given volume of matter. Relative density is the comparison of the density of one material to the density of a particular standard, such as water, at a given temperature or pressure. Relative density is also known as specific gravity.