Weight

:See also weight function.

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Weight is the interaction of matter with a gravitational field. It is equal to the mass of the object multiplied by the magnitude of the gravitational field. The word weight entered Old English sometime around the 9th century, and meant the quantity measured with a balance.

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"Weight" is often used as a synonym for mass. For instance, when we buy or sell goods "by weight", we are interested in the amount of goods exchanged, not how hard it presses down on the table. Similarly, in measurements of body weight we are primarily interested in the amount of tissue (fat, muscle, etc.) present. Correspondingly, weight is often given in kilograms and other units of mass.

Matter: Matter is commonly referred to as the substance of which physical objects are composed. In physics, it is everything that is constituted of elementary fermions. Philosophically, matter constitutes the formless substratum of all things, which exists only potentially and from which reality is produced...

Gravitational field: A gravitational field is a model used within physics to explain how gravity exists in the universe. In its original concept, gravity was a force between point masses. Following Newton, Laplace attempted to model gravity as some kind of radiation field or fluid, and since the 19th century explanation...

Mass: Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. It is a central concept of classical mechanics and related subjects....

Weight related Images and Photos (experimental)

Weight Problems	Doug Weight	Doug Weight	Doug Weight
Weight Loss Fitness & Faith Organizer	The Weight Of Water	Hollywood Paper Weight	Nada Surf: The Weight Is a Gift
Nada Surf: The Weight Is a Gift	Fly Weight Boxing Champion Pancho Villa Photograph	Biggest Loser Sweet Weight Loss Combo	The Biggest Loser The Weight Loss Program Book - Set of 10 (Book)