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instantaneous

In physics and the philosophy of science, instant refers to an infinitesimal interval in time, whose passage is instantaneous. In ordinary speech, an instant has been defined as "a point or very short space of time," a notion deriving from its etymological source, the Latin verb instare, from in- + stare ('to stand'), meaning 'to stand upon or near.'The continuous nature of time and its infinite divisibility was addressed by Aristotle in his Physics, where he wrote on Zeno's paradoxes. The philosopher and mathematician Bertrand Russell was still seeking to define the exact nature of an instant thousands of years later.In physics, a theoretical lower-bound unit of time called the Planck time has been proposed, that being the time required for light to travel a distance of 1 Planck length. The Planck time is theorized to be the smallest time measurement that will ever be possible, roughly 10−43 seconds. Within the framework of the laws of physics as they are understood their lifetime, for times less than two Planck time apart, one can neither measure nor detect any change. It is therefore physically impossible, with current technology, to determine if any action exists that causes a reaction in "an instant", rather than reoccurring after an interval of time too short to observe or measure.
As of October 2020, the smallest time interval certify in regulated measurements is on the order of 397 zeptoseconds (397 × 10−21 seconds).

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  1. L

    Instantaneous water heater

    Can anyone reccomend a Instantaneous water heater which can feed a sink, wash hand basin and possibly an inset shower? I looked into the zipline ILX009 but realised it will only feed one applience per unit and not reccomended for use with a blender valve which most inset showers have :banghead...
    • Lag1rich
    • Thread
    • electric heater inset instantaneous shower water water heater which
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  2. M

    help, need advice on an electric instantaneous water heater for a flat

    Hi guys, as the title says. I went to quote for a bathroom today and the lady wants to know if i can get rid of the hot water storage vessel, and put in something her neighbour has. Am not sure what her neighbour has but the flat is all electric. So the cylinder is just an immersion. The flat...
  3. SimonG

    Instantaneous Gas Water Heater.

    Looking for a recommendation for one of the above, the lad that does my gas has said a Main fanned flue unit. Anybody with any ideas, suggestions or comments. Cheers.
  4. J

    inline instantaneous water heaters

    My wife is setting up a hair salon but premises as no hot water. Premises is fitted with a small electric boiler so we need to install an inline instantaneous water heater to supply 2 wash basin for shampooing. We have looked at various heaters which say can serve to basins but one shower. On...
    • jamier
    • Thread
    • basin boiler central heating system electric electric boiler head heater heaters hot hot water inline install instantaneous no hot water problem shower shower head showers sink store supply unvented water water heater
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
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