What is Geodesy?

Monday, July 23, 2012

Earth geodesy icon
   Geodesy is the science that is concerned with determining the size and shape of the Earth and with mapping large areas of its surface. The principal methods used in geodesy include surveying by instruments, making astronomical observations, measuring the force of gravity at various points, and calculating the paths of artificial satellites.

What is a depressant?

A depressant is a drug that reduces the activity of various body functions. Some depressants such as anesthetics, sedatives, antiepileptics, narcotics analgesics, and some muscle relaxants, slow nervous and muscular activity by acting on the central nervous system. Tranquilizers are depressants that affect only part of the nervous system. They induce relaxation without causing total depression.

Facts about birthstones

Facts about birthstones
Did you know? The current assignation of stones to months was established in 1912