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  2. Bed frame - Wikipedia

    en.wikipedia.org/wiki/Bed_frame

    A bed frame includes head, foot, and side rails. [1] The majority of double (full) beds and all queen- and king-sized beds necessitate a central support rail, often accompanied by additional feet that extend towards the floor for stability. The concept of a "bed frame" was initially introduced and referred to between 1805 and 1815. [1]

  3. Frame and panel - Wikipedia

    en.wikipedia.org/wiki/Frame_and_panel

    Frame and panel construction at its most basic consists of five members: the panel and the four members which make up the frame. The vertical members of the frame are called stiles while the horizontal members are known as rails. A basic frame and panel item consists of a top rail, a bottom rail, two stiles, and a panel.

  4. Railroad switch - Wikipedia

    en.wikipedia.org/wiki/Railroad_switch

    A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.

  5. Amtrak's 25 Hz traction power system - Wikipedia

    en.wikipedia.org/wiki/Amtrak's_25_Hz_traction...

    Amtrak Avelia Liberty trainset operating under the 25 Hz traction power system near Claymont, Delaware. Amtrak's 25 Hz traction power system is a traction power network for the southern portion of the Northeast Corridor (NEC), the Keystone Corridor, and several branch lines between New York City and Washington D.C.

  6. DC-to-DC converter - Wikipedia

    en.wikipedia.org/wiki/DC-to-DC_converter

    DC-to-DC converters are used in portable electronic devices such as cellular phones and laptop computers, which are supplied with power from batteries primarily. Such electronic devices often contain several sub-circuits, each with its own voltage level requirement different from that supplied by the battery or an external supply (sometimes higher or lower than the supply voltage).

  7. Crossrail - Wikipedia

    en.wikipedia.org/wiki/Crossrail

    Crossrail is a completed railway project centred on London. It provides a high-frequency hybrid commuter rail and rapid transit system, known as the Elizabeth line, that crosses the capital from suburbs on the west to east and connects two major railway lines terminating in London: the Great Western Main Line and the Great Eastern Main Line.

  8. List of inventors - Wikipedia

    en.wikipedia.org/wiki/List_of_inventors

    Ida Rosenthal (1886–1973), Belarus/Russia/U.S. – Bra , the standard of cup sizes, nursing bra, full-figured bra, the first seamed uplift bra (all with her husband William) Sidney Rosenthal (1907–1979), U.S. – Magic Marker; Eugene Roshal (born 1972), Russia – FAR file manager, RAR file format, WinRAR file archiver

  9. Jubilee line - Wikipedia

    en.wikipedia.org/wiki/Jubilee_line

    The depot would have been at Beckton, roughly on the site of the current Docklands Light Railway depot, and a shuttle service between there and Custom House was considered. Parliamentary approval for the route as far as Woolwich Arsenal including the Beckton branch was granted on 1 August 1980.