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"School of Athens" Fresco in Apostol...

School of Athens” Fresco in Apostolic Palace, Rome, Vatican City, by Raphael 1509 – 1510 (Photo credit: Wikipedia)

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  • PHILOSOPHY

    "School of Athens" Fresco in Apostol...

    “School of Athens” Fresco in Apostolic Palace, Rome, Vatican City, by Raphael 1509-1510 (Photo credit:Wikipedia)

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    SCOTLAND

    Glasgow, Scotland, UK

    Frieze depicting famous Scottish scientists

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    about following

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    Although I have tried always to be accurate, errors and ambiguities have arisen in the text and I continue to seek for ways of improving the site and the clarity and accuracy of the information. I urge all readers to conduct further research into any topic of interest.

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    geoff neilsen 2014

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    www.newscientist.com

    http://www.newscientist.com/article/dn22545-dna-imaged-with-electron-microscope-for-the-first-time.html.

    New Scientist logo - link to New Scientist magazine

    GEORG SIMON OHM (1789-1854)

    1827 – Germany

    ‘The electric current in a conductor is proportional to the potential difference’

    In equation form, V = IR, where V is the potential difference, I is the current and R is a constant called resistance.

    greek symbol capital ohm (480 x 480)

    Ohm’s law links voltage (potential difference) with current and resistance and the scientists VOLTA, AMPERE and OHM.

    Ohm is now honoured by having the unit of electrical resistance named after him.
    If we use units of VI and R, Ohm’s law can be written in units as:

    volts = ampere × ohm

    photograph of george simon ohm © + diagram of simple electric circuit

    GEORG OHM


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    LEONHARD EULER (1707- 83)

    1755 – Switzerland

    ‘Analytical calculus – the study of infinite processes and their limits’

    Swiss mathematician. His notation is even more far-reaching than that of LEIBNIZ and much of the mathematical notation that is in use to-day may be credited to Euler.

    The number of theorems, equations and formulae named after him is enormous.
    Euler made important discoveries in the analytic geometry of surfaces and the theory of differential equations.

    Euler popularised the use of the symbol ‘Π‘ (Pi); e  , for the base of the natural logarithm; and i , for the imaginary unit.
    Euler is credited with contributing the useful notations  f (x) , for the general function of x ; and  Σ , to indicate a general sum of terms.

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