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Author Question: All the different kinds of substances that make up all of the material of the universe are known ... (Read 80 times) |
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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).
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.