Mixed Science

Human flight has become a tired fact of modern life. At any given moment, roughly 5,000 airplanes crisscross the skies above the United States alone, amounting to an estimated 64 million commercial and private takeoffs every year [source: NATCA]. Consider the rest of the world's flight activity, and the grand total is incalculable. It is easy to take the physics of flight for granted, as well as the ways in which we exploit them to achieve flight. We often glimpse a plane in the sky with no greater understanding of the principles involved than a caveman. How do these heavy machines take to the air? To answer that question, we have to enter the world of fluid mechanics. Physicists classify ...

Nose Bleed Prevention TipsUSE A HUMIDIFIER If you live in a dry climate use a humidifier year round, in other climates run a humdifier during the winter months when forced heat from your furnace is creating a dry atmosphere (especially at night time while you are sleeping). USE SALINE SPRAY Saline (salt water) spray for your nose three to four times daily helps reduce drying out of the mucus membranes in your nose and help prevent nose bleeds. Herbal Treatments and Precautions for Nose BleedsAstringent herbs can be used topically to decrease or eliminate bleeding.Agrimony Yarrow Witch Hazel Bilberry herb decreases the fragility of small blood vessels. Rescue Remedy is recommended ...