|
Author Question: You take a block of granite and heat it to 1000 degrees Kelvin, and it glows bright red. If you then ... (Read 6771 times) |
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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).