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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Approximately 25% of all reported medication errors result from some kind of name confusion.