Search results
Results from the WOW.Com Content Network
In chemistry and atomic physics, an electron shell may be thought of as an orbit that electrons follow around an atom 's nucleus. The closest shell to the nucleus is called the "1 shell" (also called the "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on further and further from the nucleus.
The iridescent nacre that lines the inside of the shell varies in color from silvery white, to pink, red and green-red to deep blue, green to purple. The animal has fimbriated head lobes and side lobes that are fimbriated and cirrated. The radula has small median teeth, and the lateral teeth are single and beam-like.
Scaphella capelettii Petuch, 1994. Scaphella junonia, common names the junonia, or Juno's volute, [2] is a species of large sea snail, a marine gastropod mollusk in the family Volutidae, the volutes. This species lives in water from 29 m to 126 m depth in the tropical Western Atlantic. [1] Because of its deepwater habitat, the shell usually ...
Shells of various species of cowrie; all but one have their anterior ends pointing towards the top of this image. Cowrie or cowry (pl. cowries) is the common name for a group of small to large sea snails in the family Cypraeidae. The term porcelain derives from the old Italian term for the cowrie shell (porcellana) due to their similar appearance.
The chambered nautilus (Nautilus pompilius), also called the pearly nautilus, is the best-known species of nautilus. The shell, when cut away, reveals a lining of lustrous nacre and displays a nearly perfect equiangular spiral, although it is not a golden spiral. The shell exhibits countershading, being light on the bottom and dark on top.
The shell is coiled, aragonitic, [22] nacreous and pressure-resistant, imploding at a depth of about 800 m (2,600 ft). The nautilus shell is composed of two layers: a matte white outer layer with dark orange stripes, [23] and a striking white iridescent inner layer. The innermost portion of the shell is a pearlescent blue-gray.
Electron shells are made up of one or more electron subshells, or sublevels, which have two or more orbitals with the same angular momentum quantum number l. Electron shells make up the electron configuration of an atom. It can be shown that the number of electrons that can reside in a shell is equal to . This image combines all the diagrams ...
Nautilus. (photograph) Nautilus is a black-and-white photograph taken by Edward Weston in 1927 of a single nautilus shell standing on its end against a dark background. It has been called "one of the most famous photographs ever made" and "a benchmark of modernism in the history of photography." [1]