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Author Question: Many new technologies and most of Europe's trade with Asia in the late Middle Ages came to Europe ... (Read 78 times) |
Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
The horizontal fraction bar was introduced by the Arabs.