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The Clever Device That Dispensed Water in Exchange for Coins

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Hero of Alexandria described a remarkable coin-operated dispensing mechanism. One invention used a coin-operated mechanism to dispense a measured quantity of water. The weight of the coin temporarily activated a lever https://pocketcasts.com/podcast/huy-hoang-podcast/1eef9730-8383-013f-f21c-0affd341b2cf/e39life/014841df-e3f5-4184-8909-637505cddd76?hl=it
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