… wound in various configurations on laminated iron cores, although in some cases (e.g., radio‑frequency transformers) … for the control of the amount of current that flows through discharge lamps or tubes, small types used in … and containing a mercury cathode and one or more anodes through which the current to be rectified passes. They are …
… (1) Geysers in which the water is heated as it flows through. (2) Storage water heaters (whether or not of the … (4) Electrode hot water boilers , in which an AC passes through the water between two electrodes. (5) Immersion … material which becomes very hot when current is passed through it. The material used varies (special alloys, …
… high‑carbohydrate (high‑calorie) substances such as starch, sugar, cellulose, and fats, which are “burned up” by the … aims. Examples of such substances include cereals, half‑sugar mangolds, tallow, straw. (2) “Body‑building” …
… produced by bees ( Apis mellifera ) or by other insects, centrifuged, or in the comb or containing comb chunks, provided that neither sugar nor any other substance has been added. Such honey may …
… covers matches producing a flame on being rubbed on a rough surface (sometimes specially prepared for that … excludes Bengal matches and other pyrotechnic products, though ignited by friction and having the shape of matches ( …
… lime is usually employed for soil improvement or in the sugar industry. Hydraulic lime is obtained by low … calcination of limestone containing sufficient clay (although usually less than 20 %) to ensure that the product …
… BOUND TOGETHER, WITH OR WITHOUT HANDLES These are rather roughly made articles, with or without handles, used mainly … a single bundle of vegetable material (twigs, straw, etc.) roughly bound together, or of one or more bundles of thick …
