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Electrical Supply and Population.

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Info. from the Administrative County of London and District Electric Power Company give horse power connected to the supply mains per 1,000 head of population, for power and light and just power only.


Can you provide those two figures for both a, London?

                                                                     b, London Industrial Area.


The year is 1909/1910.


Z.
  • 0
    Do I remember that to get to 1HP being 476W they did the calcs from one experiment then put in a big correction factor that was based on a big assumption before they arrived at the final "conculsion" too.


    Anyone noticed the speed of light has changed too?

    When I was at school I`m sure the speed of light was about 186234 miles per second, now its quite a few miles faster.

    So light has speeded up during my lifetime (or they just measure it a bit cleverer these days?)
  • 0
    B. You get detention for being disruptive. See me afterwards.


    C.P. You get 500 lines for not handing in your homework about the Schneider hat symbol.


    W. You get a merit mark for observation.


    Bod you get a reward. Milk monitor all week.


    Z.


  • 0
    ebee:

    Do I remember that to get to 1HP being 476W they did the calcs from one experiment then put in a big correction factor that was based on a big assumption before they arrived at the final "conculsion" too.


    Anyone noticed the speed of light has changed too?

    When I was at school I`m sure the speed of light was about 186234 miles per second, now its quite a few miles faster.

    So light has speeded up during my lifetime (or they just measure it a bit cleverer these days?)


    No the speed of light has not changed. It is just that due to dumbing down, it has altered speed in the modern vacuum in which it now travels.


    Z.


  • 0
    ebee:

    ...

    Anyone noticed the speed of light has changed too?

    When I was at school I`m sure the speed of light was about 186234 miles per second, now its quite a few miles faster.

    So light has speeded up during my lifetime (or they just measure it a bit cleverer these days?)


      well you could do worse than read the article here about the history of measuring light speed. Basically no change since the early 1970s, and that was within a % or so of the late 1870s so unless your school had some very old books....
    298,299,960 m./s or 300 meters per microsecond is good enough for most day to day work

    Mike.


  • 0
    ebee:

    Anyone noticed the speed of light has changed too?

    When I was at school I`m sure the speed of light was about 186234 miles per second, now its quite a few miles faster.

    So light has speeded up during my lifetime (or they just measure it a bit cleverer these days?)


    When I was at school the speed of light was 186,282.39 miles per second (plus or minus about 0.4 miles per second) so does that make me younger than you? I think the speed of light is constant, but they have always been saying that with advances in technology distances are shrinking, so perhaps the miles are shorter.


  • Former Community Member
    0 Former Community Member
    Alasdair Anderson:
    ebee:

    Anyone noticed the speed of light has changed too?

    When I was at school I`m sure the speed of light was about 186234 miles per second, now its quite a few miles faster.

    So light has speeded up during my lifetime (or they just measure it a bit cleverer these days?)


    When I was at school the speed of light was 186,282.39 miles per second (plus or minus about 0.4 miles per second) so does that make me younger than you? I think the speed of light is constant, but they have always been saying that with advances in technology distances are shrinking, so perhaps the miles are shorter.




    186,282.397 miles/sec. I remember that being given in a science programme on TV late 70s early 80s (BBC Horizon?). Apparently they got it by comparing two laser beams.


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