Top 10 facts about the world. Skin exfoliation, or the process of removing dead skin cells from the body and face, can be accomplished in a variety of ways. Gommage is one method of exfoliation. Considered highly effective, a gommage exfoliant can leave skin clean and soft. A paste or cream, gommage is administered onto the skin in a very thin layer. It is left on the skin to dry, but only slightly. It is then massaged and rolled off the skin. As the layers of dried paste fall off the body, so too do the skin's outermost dead cells.
Pressurized Aircraft (Part Three) Decompression. Explosive decompressionâa change in cabin pressure faster than the lungs can decompress, possibly causing lung damage. Normally, the time required to release air from the lungs without restrictions, such as masks, is 0.2 seconds. Most authorities consider any decompression that occurs in less than 0.5 seconds to be explosive and potentially dangerous.
Guinness World Records recognized NASA's X-43A scramjet with a new world speed record for a jet-powered aircraft - Mach 9.6, or nearly 7,000 mph. The X-43A set the new mark and broke its own world record on its third and final flight on Nov. 16, 2004. In March 2004, the X-43A set the previous record of Mach 6.8 (nearly 5,000 mph). The fastest air-breathing, manned vehicle, the U.S. Air Force SR-71, achieved slightly more than Mach 3.2. The X-43A more than doubled, then tripled, the top speed of the jet-powered SR-71.