metallic arc
121History of the Earth — For the history of modern humans, see History of the world. Geological time put in a diagram called a geological clock, showing the relative lengths of the eons of the Earth s history The history of the Earth describes the most important events… …
122Electric current — Electromagnetism …
123Iceman (comics) — Superherobox caption= comic color= background:#ff8080 character name = Iceman real name= Robert Bobby Louis Drake species= Human Mutant publisher= Marvel Comics debut= Uncanny X Men vol. 1 #1 (September 1963) creators= Stan Lee Jack Kirby… …
124Steel — For other uses, see Steel (disambiguation). The steel cable of a colliery winding tower …
125Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
126Xenon — (PronEng|ˈzɛnɒn [Xenon, entry in the Oxford English Dictionary, prepared by J. A. Simpson and E. S. C. Weiner, vol. 20, second edition, Oxford: Clarendon Press, 1989. ISBN 0 19 861232 X (vol. 20), ISBN 0 19 861186 2 (set.)] or IPAlink en|ˈziːnɒn… …
127Atmospheric reentry — refers to the movement of human made or natural objects as they enter the atmosphere of a planet from outer space, in the case of Earth from an altitude above the edge of space. This article primarily addresses the process of controlled reentry… …
128Paris Métro — Métro Paris region public transport Métro lines Line 1 …
