sand disk
21Microelectromechanical system oscillator — Microelectromechanical system (MEMS) oscillators are timing devices that generate highly stable reference frequencies. These reference frequencies are used to sequence electronic systems, manage data transfer, define radio frequencies, and… …
22The Ancestral Trail — When he who is the Chosen One Shall tread upon the Ancient Path And battle there to overcome The Forces of Dark Then shall the Seven be restored And evil banished from this world The Ancestral Trail is a now out of print partwork magazine that… …
23gastropod — /gas treuh pod /, n. 1. any mollusk of the class Gastropoda, comprising the snails, whelks, slugs, etc. adj. 2. Also, gastropodous /ga strop euh deuhs/. belonging or pertaining to the gastropods. [1820 30; < NL Gast(e)ropoda a class of mollusks.… …
24Spotted eagle ray — Temporal range: Upper Cretaceous–Recent[1] …
25comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …
26Dune II — This article is about the computer game. For Frank Herbert s sequel to his novel Dune, see Dune Messiah. For the MUSH, see Dune II (MUSH). Dune II Developer(s) Westwoo …
27List of challenges in Takeshi's Castle — A wide range of challenges were used throughout the history of the Japanese game show Takeshi s Castle, some occurring only once or twice, or others in virtually every show, depending upon their popularity and ease of preparation. Many challenges …
28List of albums containing a hidden track — This list contains the names of albums that contain a hidden track and also information on how to find them. Please note that not all printings of an album contain the same track arrangements, so your copy of album X may or may not have the… …
29ostariophysan — ▪ fish Introduction any of about8,000 species of bony fishes (bony fish) belonging to a group that includes the majority of freshwater fishes throughout the world. Familiar representatives of this group are the minnows (minnow), suckers (sucker) …
30sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
