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Author Question: When light reflects from a surface, there is a change in its A) frequency. B) wavelength. C) ... (Read 14 times) |
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
Excessive alcohol use costs the country approximately $235 billion every year.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.