Mechanical engineering emerged as a field during the
Industrial Revolution in Europe in the 18th century; however, its development can be
traced back several thousand years around the world. Mechanical engineering science emerged in the 19th century as a result of developments in the field of
physics. The field has continually evolved to incorporate advancements in technology, and mechanical engineers today are pursuing developments in such fields as
composites,
mechatronics, and
nanotechnology. Mechanical engineering overlaps with
aerospace engineering,
metallurgical engineering,
civil engineering,
electrical engineering,
manufacturing engineering,
chemical engineering,
industrial engineering, and other engineering disciplines to varying amounts. Mechanical engineers may also work in the field of
biomedical engineering, specifically with
biomechanics,
transport phenomena,
biomechatronics,
bionanotechnology, and modeling of biological systems.
Apples are an excellent source of antioxidants, which combat free radicals. Free radicals are damaging substances generated in the body that cause undesirable changes and are involved in the aging process and some diseases.
Some animal studies have found that an antioxidant found in apples (polyphenols) might extend lifespans.
Researchers at The Florida State University said that apples are a "miracle fruit".
In their study, the investigators found that older women who starting a regime of eating apples daily experienced a 23 percent drop in levels of bad cholesterol (LDL) and a 4% increase in good cholesterol (HDL) after just six months.
