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1. simple.wikipedia.org › wiki › Pitch,_yaw,_and_rollPitch, yaw, and roll - Simple English Wikipedia, the free ...

   simple.wikipedia.org › wiki › Pitch,_yaw,_and_roll

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   Pitch, yaw, and roll. Pitch, yaw and roll are the three dimensions of movement when an object moves through a medium. The terms may be used to describe an aeroplane 's movements through the air. They are also applied to watercraft moving through water, and spacecraft moving through space. There are in fact six degrees of freedom of a rigid body ...

2. simple.wikipedia.org › wiki › Body_mass_indexBody mass index - Simple English Wikipedia, the free encyclopedia

   simple.wikipedia.org › wiki › Body_mass_index

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   • History
   • Calculation
   • Overweight Or Not
   • Uses
   • Variations

   The BMI was invented by Adolphe Queteletbetween 1830 and 1850. A scientist named Ancel Keys first used the term body mass index in 1972.He wrote that governments should measure the BMI of adults to find out whether they are too fat or too thin.

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   To find somebody's BMI: 1. measure their weight (body mass) in kilograms or pounds 2. measure their height in meters or inches 3. divide their weight by the squareof their height 4. if using pounds and inches, multiplythe answer by 703 This is the formula: For example, a man whose weight is 78 kg (172 lb) and height is 1.83 m (6 ft 0 in) has a BMI ...

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   Health organisations, including the World Health Organisation(WHO), use the BMI to help decide whether people are too fat or too thin. The WHO uses these numbers for adults: Some people disagree with these numbers. Some experts think the Overweight range for people with Asian body types should be 23–27.49, not 25–29.99. Some experts think the lowes...

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   BMI is useful for governments who want to know about the health of their people. For example, in the United States in 2007, 74% of adults had a BMI above 25 (Overweight or Obese) and 27% of adults had a BMI above 30 (Obese).Many of these people will become ill because they are too fat. This information helps the United States government decide what...

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   The Ponderal Index is similar to the body mass index, but the height is cubed, not squared. The formula is: 1. PI = w e i g h t ( k g ) h e i g h t ( m ) 3 {\displaystyle {\mbox{PI}}={\frac {weight(kg)}{height(m)^{3}}}} Some experts suggest that the exponent should be between 2.3 and 2.7.The best formula might be: 1. BMI = w e i g h t ( k g ) h e i...

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