see strength of materialsstrength of materials, measurement in engineering of the capacity of metal, wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by one part of an elastic body upon the adjoining part, and strain is the deformation or change in. ..... Click the link for more information.
The Koreans are believed to have originated from ancient China. This is gathered from the archaeological and linguist evidence.
Despite statistics showing that South Korea is becoming an increasingly multi-ethnic society, most of the South Korean population continues to identify itself as one people (Korean: ë¨ì¼ë¯¼ì¡±; Hanja: å®ä¸æ°æ, danil minjok) joined by a common bloodline.ontrary to popular belief in modern Korea, the ideology of an ever-present Korean purest race began only in the early twentieth century, when the Imperial Japanese annexed the Korean Peninsula and launched a campaign to persuade Koreans that they were of the same pure racial stock as the Japanese themselves.