Why was the thermometer significant

The thermometer was known to be significant because it was the first time that humans actually got hold of reading specific temperatures. The thermometer is also commonly used in various different situations. It's used to measure the heat/cold outside, the temperature of food, a human's temperature, and used to measure in science experiments. Those are simply a few examples. Hope this helped :))

nuclear weapons are hoaxes. many people believe they are real, though.