/u/DanTheTerrible's posts
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in the FAQ it is stated that one proof of the universe's expansion is that "more distant galaxies are packed closer together". What sort of measurements have been made to show this?
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Why were there no major naval battles in the mediterranean between Actium (21 BC) and the sixteenth century?
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Napoleonic naval discussions often mention "weight of metal", that is to say the total weight of connonballs thrown by a complete broadside, as a measure of firepower. Did the ship designers and naval officers of the day appreciate the role velocity plays in the damage a projectile does?
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