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Body Weight
Human body weight is a person's mass or weight. Strictly speaking, body weight is the measurement of weight without items located on the person. Practically though, body weight may be measured with clothes on, but without shoes or heavy accessories such as mobile phones and wallets, and using manual or digital weighing scales. Excess or reduced body weight is regarded as an indicator of determining a person's health, with body volume measurement providing an extra dimension by calculating the distribution of body weight. Average adult human weight varies by continent, from about in Asia and Africa to about in North America, with men on average weighing more than women. Estimation in children There are a number of methods to estimate weight in children for circumstances (such as emergencies) when actual weight cannot be measured. Most involve a parent or health care provider guessing the child's weight through weight-estimation formulas. These formulas base their findings o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mass Versus Weight
In common usage, the mass of an object is often referred to as its weight, though these are in fact different concepts and quantities. Nevertheless, one object will always weigh more than a second object, if the first object has greater mass, and the two objects are subject to the same gravity (i.e. the same gravitational field, gravitational field strength). In scientific contexts, mass is the amount of "matter" in an object (though "matter" may be difficult to define), whereas weight is the force exerted on an object by gravitation, gravity. In other words, an object with a mass of 1.0 kilogram weighs approximately 9.81 newton (unit), newtons on the surface of the Earth, which is its mass multiplied by the gravitational field strength. The object's weight is less on Mars, where gravity is weaker; more on Saturn, where gravity is stronger; and very small in space, far from significant sources of gravity; but it always has the same mass. Objects on the surface of the Earth have wei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Judo
is an unarmed gendai budō, modern Japanese martial art, Olympic sport (since 1964), and the most prominent form of jacket wrestling competed internationally.『日本大百科全書』電子版【柔道】(CD-ROM version of Encyclopedia Nipponica, "Judo"). Judo was created in 1882 by Kanō Jigorō () as an eclectic martial art, distinguishing itself from its predecessors (primarily Tenjin Shin'yō-ryū, Tenjin Shinyo-ryu jujutsu and Kitō-ryū jujutsu) due to an emphasis on "randori" (, lit. 'free sparring') instead of "kata" (pre-arranged forms) alongside its removal of striking and weapon training elements. Judo rose to prominence for its dominance over Kodokan–Totsuka rivalry, established jujutsu schools in tournaments hosted by the Tokyo Metropolitan Police Department (警視庁武術大会, ''Keishicho Bujutsu Taikai''), resulting in its adoption as the department's primary martial art. A judo practitioner is called a , and the judo uniform is called . The objective of co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
