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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
Did you know?
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.