no other metal unless iron can be used here
121Automotive battery — 12 V, 40 Ah Lead acid car battery An automotive battery is a type of rechargeable battery that supplies electric energy to an automobile.[1] Usually this refers to an SLI battery (starting, lighting, ignition) to power the starter motor …
122Track (rail transport) — Permanent way redirects here. For other uses, see Permanent way (disambiguation). Twin rail tracks in a wooded area …
123Dwarfs (Discworld) — Dwarfs in Terry Pratchett s Discworld novels are similar to the Dwarves of J. R. R. Tolkien s Middle earth, to which they largely started out as a homage, and dwarves in other fantasy novels. They are short, stocky, bearded metal workers,… …
124Environmental radioactivity — is produced by radioactive materials in the human environment. While some radioisotopes, such as strontium 90 (90Sr) and technetium 99 (99Tc), are only found on Earth as a result of human activity, and some, like potassium 40 (40K), are only… …
125Neon — This article is about the noble gas. For other uses, see Neon (disambiguation). fluorine ← neon → sodium …
126Coeliac disease — Classification and external resources Biopsy of small bowel showing coeliac disease manifested by blunting of villi, crypt hyperplasia, and lymphocyte infiltration of crypts ICD 10 …
127electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …
128geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …
