DIOGENES n.
conditions of life, and for sharp, caustic sayings. Diogenes' crab (Zoöl.), a species of terrestrial hermit crabs (Cenobita Diogenes), abundant in the West Indies and often destructive to crops. -- Diogenes' tub, the tub which the philosopher Diogenes is said to have carried about with him as his house, in which he l…
EYEPIECE n.
eyond both lenses; -- called also, from the name of the inventor, Ramsden's eyepiece. -- terrestrial, or Erecting eyepiece, an eyepiece used in telescopes for viewing terrestrial objects, consisting of three, or usually four, lenses, so arranged as to present the image of the object viewed in an erect position.…
MAGNETIC; MAGNETICAL a.
ium, manganese, etc., which are capable or becoming magnetic. (b) (Physics) In respect to terrestrial magnetism, the declination, inclination, and intensity. (c) See under Element. -- Magnetic equator, the line around the equatorial parts of the earth at which there is no dip, the dipping needle being horizontal. --…