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acejet170 Such a privilege to be involved in this great work and for a brilliant client. 1w

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acejet170 The inauguration site of The O'Neill. 1w

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acejet170 Spent most of the day in a field marking out locations for interpretive panels. It's a great way to earn a living. 1w

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acejet170 Modern physics has also developed the laser, a ruby rod that produces a powerful beam of coherent light (here shown disintergrating a razor blade). 1w

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acejet170 Using atom smashers, reacters, radioactive materials and other new research tools, nuclear physicists have not only explored the core of the atom but have also made important contributions to industry, agriculture , medicine, electric power and ship propulsion. 1w

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acejet170 An oscillating or alternating electromagnetic disturbance projects electromagnetic waves through space at the speed of light. 1w
  •   tomgrahamworkshop Thanks for sharing these. The most beautiful books I ever did see. Good to know I'm not alone in thinking so. 1w

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acejet170 A 19th century conversation by "string telephone". 1w
  •   vicki_brown These are all so wonderful! 1w
  •   vicki_brown (She also looks quite unconvinced by whatever he's saying.) 1w

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acejet170 How to use the quadrant in calculating the trajectory of a cannon ball. 1w

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acejet170 A "scorpian", capable of shooting heavy round shot and darts. 1w

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acejet170 A 16th century siege engine — designed to throw incendiary shells and heavy stones into a beleagured town or fort. 1w

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acejet170 From Weaponry: Tactical formations of the classical Greco-Macedonian phalanx, an illustration from a tenth century Byzantine manuscript. 1w

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acejet170 In polymers, molecules of the same structure are linked together in a chain to yield a single molecule different in weight and function from its component parts. 1w

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acejet170 On the left is the desoxyribonucleic acid (DNA) polymer. 1w

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acejet170 From around 1806, Dalton's symbols of the elements. A Quaker schoolmaster, Dalton developed an atomic theory that triggered a major leap forward — it was to form the basis of modern physics and chemistry. 1w

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acejet170 A 16th century lab for making alloys. Gold and silver and that. 1w

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Aden Richard Weston
acejet170 The celestrial tree, from the work attributed to 15th century monk Basil Valentine, whose very existence is now doubted. The astrological symbols show the mystical nature of alchemy. It wasn't long before inquiring minds would make the leap from mumbo jumbo nonsense to science. 1w

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acejet170 Alchemical symbols from the 15th century "Codec Casselanus". 1w

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acejet170 From Chemisty's magical beginnings. 1w

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Aden Richard Weston
acejet170 ...And Chemistry has a superb piece of foil blocking hidden underneath. 1w

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