frequency optimum traffic
41Permanent 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… …
42Mesh networking — For other meanings of the word mesh, see Mesh (disambiguation). Illustration of a mesh network Mesh networking (topology) is a type of networking where each node must not only capture and disseminate its own data, but also serve as a relay for… …
43Public light bus — A green public minibus awaiting at the station at Tsim Sha Tsui Chinese 公共小型巴士 …
44Recording studio — Further information: Movie studio, Studio, and Television studio Studio control room with a mixing console, monitor speakers, and MIDI workstation. A recording studio is a facility for sound recording and mixing. Ideally both the… …
45Flashline Mars Arctic Research Station — Flashline Mars Arctic Research Station …
46MT63 — is a digital for transmission in high noise situations. How it works By encoding the data to transmit (what you type on the keyboard) in a complex way, using 64 different modulated tones, the MT63 developer Pawel Jalocha SP9VRC has been able to… …
47art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …
48Flight data recorder — An example of a flight data recorder; the underwater locator beacon is the small cylinder on the far right. (English translation of warning message: FLIGHT RECORDER DO NOT OPEN) …
49Wind power — Wind power: worldwide installed capacity [1] …
50building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
