# hyperloop
## English
### Etymology

From hyper- +‎ loop.

### Noun

hyperloop (plural hyperloops)
* A theoretical high-speed transportation system, proposed by Elon Musk, in which pressurized capsules ride on an air cushion driven by linear induction motors and air compressors through reduced-pressure tubes.
** 2012, Scott Griffiths, Eric Elfman, Beyond Genius, →ISBN, page 210:Musk began developing another transportation project in 2012, something he calls the Hyperloop.
** 2014, Gideon Defoe, Elite Dangerous: Docking is Difficult, →ISBN:Whatever – the result is the same: they usually jump in front of the nearest hyperloop shuttle.
** 2015 September 16, Casey Newton, “Hyperloop Technologies has a CEO — and plans to open its test track next year”, in The Verge:There is a small handful of groups working in earnest on making Elon Musk's dream of a hyperloop a reality, but none are so high profile as Hyperloop Technologies.
** 2015, Landry Hunt, Jeremiah Nichols, The System, →ISBN:Then in 2013 we all find out who Elon Musk is, the Tesla, Space X and hyperloop guy.
** 2015, S. Van Themsche, The Advent of Unmanned Electric Vehicles, →ISBN, page 369:Will the fate of the hyperloop concept be different from the maglev and be introduced quickly and successfully on the market?
** 2022 November 30, Christian Wolmar, “The railway endures as driverless cars hit the buffers...”, in RAIL, number 971, page 57:Musk also features in the other piece of bad news for the tech enthusiasts - the effective collapse of the hyperloop, as the technical limitations of the idea have become all too apparent. [...] Firstly, in February, Virgin announced it was abandoning plans to create a passenger-carrying hyperloop system and made the 100 staff working on the project redundant. Then, early in November, it was revealed that Musk's test tube for hyperloop has been dismantled with no explanation, with the site now being used as a car park.
* (computing) A control structure in which a loop repeats until either a stopping condition is met or all possible values of the looping index have been checked.
** 2009, Klaus Ambos-Spies, Benedikt Löwe, Wolfgang Merkle, Mathematical Theory and Computational Practice, →ISBN, page 70:If Hal finds a value of x such that fun(x), Hal sends a signal to Dave (perhaps a light-beam). Dave carries a receiving device with him, which stores a variable, xFound, initialised to a default value of 0; this receiver sets xFound to 1 on (and only on) receipt of a signal from Hal. Once Dave reaches point r, Hal's entire infinite history lies in Dave's past, and any signal that Hal might have sent to Dave will have arrived. So from Dave's perspective, by point r, Hal has completed a hyperloop.
* (quantum mechanics) A quantum mechanical paradox resulting from the observer being a product of the observations that it makes.
** 1984, Alex Comfort, Reality and Empathy, →ISBN:At this point, the hyperloop breaks in. A holographic virtual image is presented to an optical observer. Where is the observer of the image formed from Gij? Presumably, it is the physicist. But the physicist is himself an image projected from the same source. We still have a self-viewing system, and a no-exit loop.
** 1985, Christopher Chapple, Religious experience and scientific paradigms, page 6:Even more jaw-rattling is the problem of what is being called the "hyperloop." The Helmholtzian view of mind — that it is exhaustively explainable in terms of the electrochemical activity of brain — is a solid article of faith for most well-dressed scientists, for all practical purposes, even if they also have religious opinions which include immortal souls, divine sparks, and the like: those are strictly idiosyncratic contraband and belong in a different box. But in modern physics, our definitions of matter-energy and space-time require the insertion of mind as a primitive component: the brain consists of the particulars it observes.
** 1989, Glendon A. Schubert, Evolutionary politics, page 317:His concern in this paper is with the relations of Bohm's implicate to a "hyperloop" (the "observer paradox "), which Comfort variously describes as "matter thinking itself' (1981: 363), as the process "by which the brain generates 4-space by object formation from the plenum.
** 2002, Institute of Physics (Great Britain), Journal of Physics: Mathematical and general, page 7670:When the subgraph is a hyperloop, the associated equation is a relation involving no variables: in the unfrustrated case, it is just a trivial identity; in the frustrated case, it is a configuration-independent characteristic of the instance which could eventually determine a priori unsatisfiability.

### Anagrams

* polyphore