hand lens
hand lens A hand-held, steel- or plastic-mounted, optical magnifying system usually consisting of two or more optical elements, which is used in the field to provide an enlarged image of rocks, minerals, and fossils, ranging from 5X to 20X. Hand lenses vary in diameter from 0.5 to 1.5 cm, can be carried conveniently in a pocket, and form an essential tool in a geologist's field kit.
More From encyclopedia.com
Hampton Court (Richmond upon Thames England) , hand / hand/ • n. 1. the end part of a person's arm beyond the wrist, including the palm, fingers, and thumb: she placed the money on the palm of her… Hands , hands The major purpose of the forelimbs in most vertebrates is locomotion; humans are an exception. Bipedality freed the forelimbs and allowed devel… Polynomial , polynomial A formal power series, i.e. a sum of multiples of powers of an independent variable known as the indeterminate (often written as x, s, or… Lysithea , Lysithea (Jupiter X) One of the lesser satellites of Jupiter, with a diameter of 24km. George Boole , Boole, George
Boole, George
(b. Lioncoln, England, 1815; d. Cork, Ireland, 1864)
mathematics.
George Boole was the son of John Boole, a cobbler whose… Diophantus Of Alexandria , Diophantus of Alexandria
Diophantus of Alexandria
(fl. ad. 250)
mathematics.
We know virtually nothing about the life of Diophantus. The dating of hi…
You Might Also Like
NEARBY TERMS
hand lens