When Was the Thermometer Invented?
When Was the Thermometer Invented? The first practical thermometer or instrument for measuring temperature was invented shortly before the end of the 16th Century by...
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Why Do Animals Need Oxygen?
Why Do Animals Need Oxygen? We must have oxygen to live. Every living animal cell needs oxygen for its vital metabolic activities (the process of converting fuel to...
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Why Can You Not Breathe When You Swallow?
Why Can You Not Breathe When You Swallow? You are not able to breathe when you swallow because your respiratory (breathing) system is closely linked to your alimentary...
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When Was the Iron Lung Invented?
When Was the Iron Lung Invented? In 1670, English scientist John Mayow came up with the idea of external negative pressure ventilation. Mayow built a model consisting...
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When Was the First Patent Filed for a Drink-through Lid?
When Was the First Patent Filed for a Drink-through Lid? The disposable coffee cup lid falls squarely in the category of random, everyday objects that you might assume...
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