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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.
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    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.


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  • 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.


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