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Author Question: The seven interfaces commonly used in the SONET hierarchy are VT-1.5, VT-6, OC-1, OC-3, OC-12, ... (Read 15 times) |
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
If you could remove all of your skin, it would weigh up to 5 pounds.
Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
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).
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.