ordinary spacing type
11clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… …
12mosaic — mosaically, adv. /moh zay ik/, n., adj., v., mosaicked, mosaicking. n. 1. a picture or decoration made of small, usually colored pieces of inlaid stone, glass, etc. 2. the process of producing such a picture or decoration. 3. something resembling …
13Mosaic — /moh zay ik/, adj. of or pertaining to Moses or the writings, laws, and principles attributed to him: Mosaic ethics. Also, Mosaical. [1655 65; < NL Mosaicus, equiv. to LL Mos(es) MOSES + aicus, on the model of Hebraicus Hebraic] * * * Surface… …
14Gramophone record — A 12 inch (30 cm) 33⅓ rpm record (left), a 7 inch 45 rpm record (right), and a CD (above) A gramophone record, commonly known as a phonograph record (in American English), vinyl record (in reference to vinyl, the material most commonly used after …
15quasicrystal — /kway zuy kris tl, kway suy , kwah see , zee /, n. a form of solid matter whose atoms are arranged like those of a crystal but assume patterns that do not exactly repeat themselves. [1985 90] * * * Introduction also called quasi periodic crystal …
16Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …
17typography — /tuy pog reuh fee/, n. 1. the art or process of printing with type. 2. the work of setting and arranging types and of printing from them. 3. the general character or appearance of printed matter. [1635 45; < NL typographia, equiv. to Gk týpo(s)… …
18Quantum field theory — In quantum field theory (QFT) the forces between particles are mediated by other particles. For instance, the electromagnetic force between two electrons is caused by an exchange of photons. But quantum field theory applies to all fundamental… …
19optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
20Photonic metamaterial — Electromagnetism Electricity · …
