weight

the vertical force exerted by a mass as a result of gravity sports equipment used in calisthenic exercises and weightlifting

it is not attached to anything and is raised and lowered by use of the hands and arms the relative importance granted to something

"his opinion carries great weight"

"the progression implied an increasing weightiness of the items listed" an artifact that is heavy an oppressive feeling of heavy force

"bowed down by the weight of responsibility" a system of units used to express the weight of something a unit used to measure weight

"he placed two weights in the scale pan" (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance weight down with a load present with a bias

"He biased his presentation so as to please the share holders"

See also weight function. For the 1994 album by the group Rollins Band, see Weight (album).''In the physical sciences, 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 languageOld English sometime around the 9th century, and meant the quantity measured with a balance -- the same as mass in both common and scientific usage. In common usage, weight still means the same as mass.

Weight and mass - "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.In the physical sciences, people usually distinguish between weight and mass. Under most circumstances, this ambiguity is not a problem, because the weight of an object is Proportionality (mathematics)directly proportional to its mass, and the constant of proportionality -- the strength of the gravitational field -- is approximately constant everywhere on the surface of the Earth (around 9.8 m/s²). For instance, a body will exert less force if it is located on the Moon than if it is on the Earth, since the gravitational field of the Moon is weaker; its mass, on the other hand, does not depend on position. Although terms such as "atomic weight", "molecular weight", and "formula weight" may still be encountered, such usage is often discouraged; terms like atomic mass are used instead.Mass is measured using a Weighing_scale#Balancesbalance which compares an item in question to matter of known mass; this method is independent of gravity. Alternately, a !Weighing_scale#Spring_scalesspring scale or !Weighing_scale#Hydraulic_or_pn eumatic_scalesHydraulic or pneumatic scale is used to measure force (which physicists call weight). Most scales measure weight using a Spring (device)spring.Related to the historical identification of mass and weight, the pound has been used both as a unit of mass and as a unit of force. In the United States, United Kingdom, and elsewhere, the pound is and always has been officially defined as a unit of mass. The corresponding force is called a pound-force, and similarly the weight of a kilogram of material on Earth is called a kilogram-force. However, the use of pounds to measure forces is still common in engineering, and it occurs in derived units like PSIp.s.i. (pounds per square inch). In most countries, scientists have adopted SI units, which use kilogram for mass and Newton (unit)newton for force non-interchangeably.

Weight as a force - The SI unit for weight is the Newton (unit)newton (N), or kilogram metremetres per second squared !(kg m s^{&m inus;2}).The? weight force that we sense is actually the normal force exerted by the surface we stand on, which prevents us from being pulled to the center of the Earth, and not the weight itself. This normal force, that we can call the apparent weight is the one that is measured by a weighing scale, not the weight itself. A good evidence of this is given by the fact that a person moving up and down on his toes does see the indicator moving, telling that the measured force is changing while his weight, that depends only on his mass, the Earth mass and the distance between his center of mass and the center of Earth obviously do not change.In contrast, in free-fall, there is no apparent weight because we are not in contact with any surface to provide such a normal force. The experience of having no apparent weight is known as weightlessness or microgravity.

Comparative weights on bodies of the solar system - The following is a list of the weights of a mass on some of the bodies in the solar system, relative to its weight on Earth: For weight variations on Earth, see gee, physical geodesy and gravity anomaly.

Human weight in the medical sciences and ordinary language - Although many people prefer the less-ambiguous term body mass to body weight, the term ''weight'' is overwhelmingly used in daily English speech and in biological and medical science contexts. Body weight is measured in kilograms throughout the world. Most hospitals in the United States use kilograms for calculations, but use kilograms and pounds simultaneously for other purposes (a pound is 0.45 kg). Many people in the United Kingdom still measure their weight using the stone (weight)stone equal to 14 lb (6.35 kg).

Sports usage - Participants in sports such as boxing, wrestling, judo, and weight-lifting are classified according to their body weight, measured in units of mass such as pounds or kilograms. See, e.g., wrestling weight classes, boxing weight classes, judo at the 2004 Summer Olympics, boxing at the 2004 Summer Olympics. In horse racing, weight is used to handicappinghandicap horses. A weight also refers to the physical objects used in weight-lifting and other sports such as the hammer throw.

See also -

Weights and measures

Ancient weights and measures

Medieval weights and measures

Atomic weight

Human weight

Body Mass Index

Gross weight

Curb !weightCategory:CommerceCategor y:MassCategory:ForceCategory:P hysiologybn:ওজনcs:Váhad a:Vægtde:Gewichtet:Kaales:Pes oeo:Pezofr:Poidsgl:Pesohe:מש קלio:Pezoid:Beratnl:Gewichtj a:重さms:Beratpl:Ciężarpt: Peso? !(física)ru:Весsl:Težafi:P ainovi:Trọng? lượngzh:重量

Michael Thurmond's Body Makeover - Weight Loss & Dieting 6 Week Program
Lose weight and reshape your body with exercise, personal training and proper nutrition with Michael Thurmond's proven 6 week makeover program. Located in Los Angeles. 1-800-NEWBODY
http://www.bodymakeovers.com/

Individualized Nutriton Program
Scientifically develo[ped program to provide you with a customized nutritional program consistingofn personalized and bio matched multi vitamins and minerals, supportive foods, avoidance foods, and style of exercise -all of these assist in maintaining a youthful, energized, healthy life.
http://www.signaturesupplements.com/

Paul Hicks Steel Sculptor
Canadian Sculptor Paul Hicks displays his works of Steel
http://www.sexygoat.net/

Logistics Partner in Cambodia
R&H - Yours Total Logistics Partners in Cambodia - Yours Freight Needs - Our Solution. Visit us at www.randhcambodia.com
http://www.randhcambodia.com/

Chicago Personal Training
Chicago Personal Training designs individualized training programs for your specific needs. Weight loss, overall fitness, nutritional guidance and sports training. In home training for your convenience.
http://www.chicagopersonaltraining.com/

Exercise Equipment Reviews
Personal trainer gives you honest exrcise equipment reviews and shows you how to find the best treadmill, elliptical trainer, exercise bike and home gym.
http://www.trainersecrets.com/

Redbak - Highly Potent Supplements
Redbak is one of Australia’s best known Sports Nutrition brands, number one protein powder sales
http://www.redbak.net/

Hypnosis, hypnotherapy, EFT, intuitive and reconnective healer, healing, clairvoyance, psychic
Master hypnotherapist and Intuitive Healer, Cathrine Margit, based in Toronto Canada, offers hypnosis & EFT as well as Reconnective healing in order to enable people to heal themselves
http://www.curo.net/

Sharon Turrentine
All About sharon
http://www.sharonturrentine.com/

Swedsnus - Snus, snuff portion, Icetool
Buy snus, snus portioning tools made of stainless steel and snuff roll at Swedsnus.com
http://www.swedsnus.com/

Physique Essentials
Australia's Number 1 Website specialising in natural bodybuilding. Hundreds of pages of free natural bodybuilding information as well and competiton and general training services. The HOME of 'Maximum Results Training'
http://www.physique-essentials.com/

Fast Weight Loss Results!
Powerthin specializes only in the best in natural weight loss and diet supplements.
http://www.powerthin.com/

Weight Management.
Whether you want to lose weight, improve your health or increase your energy levels our products can help you achieve your goal. Diet UK will put you in touch with your own personal weight loss and nutrition advisor who will help you maximise the benefits of taking fantastic products. This morning thousands of people in the UK started the day the right way, by using our products.
http://www.dietuk.net/index.asp?DistID=21862

Creating a diet and exercise plan when your overweight and over 50
I'm over weight & over 50 and ready to create a new healthy lifestyle plan. This site is to help me create a fitness and diet plan that creates a healthy lifestyle.
http://www.overweightandover50.com/

Weight Loss with Weight Watchers
Weight loss with Weight Watchers online program - I lost weight, you can too!
http://www.a-plus-online-weight-loss.com/

www.affairsofthemind.com
A tax exempt corporation created to empower offers to the public deucation and literary products related to lifes challenges and info about hypnosis and other subconscious techniques. We invite your charitable donation.
http://www.affairsofthemind.com/

Lose Weight Quickly & Safely
Large selection of the most popular weight loss products on the market today. Check out our business opportunity.
http://www.properfitness.com

Silk & Velvet Draperies
At Halfpricedrapes.com we are committed to providing the finest quality of velvet & silk drapery to our customers at simply unbeatable price. Along with great products, we also believe in providing best possible customer service and timely deliveries. In our selection you will find the finest quality hand weaved 100% Plain silk, Opulent embroidered, Pin tuck, Checked diamonds, taffeta silk and plush velvet drapes. We take pride in our craftsmanship and guarantee the lowest prices for similar quality drapes available anywhere. Shop With Confidence!
http://www.halfpricedrapes.com/

BREATHE YOGA AND PILATES
BREATHE is the premier source for London's best yoga and Pilates teachers, offering private instruction for individuals and small groups in homes and offices all over London. There is no limit on class size and teachers are available seven days a week.
http://www.breatheonline.com/

The Diennet Institute
Medical Treatment of Obesity and the Overweight, Lose weight from 1Lbs.-100Lbs.
http://www.diennet.com/

VitaScience Home Page
VitaScience provides vitamin supplement and private bottling for small size and large runs. We offer specialized herbal formulations in their raw form as well as in capsules or tablets. We have what it takes to put together that special bottled formulation that you plan to retail in stores.
http://www.vitascience.com/

M.G Development
Health supplements and medical products.
http://www.mgdevelopment.com/

Diet Tips
Various tips and techniques on dieting, including both starting and advanced tips covering a wide range of dieting topics.
http://diet.tipcentral.net/

Weight Loss Diet Pills Plus Weight Loss Program Information
Weightloss diet pills and weight loss program information for fast weight loss products and weightloss tips. Fat burners and appetite suppressants to lose weight.
http://www.weightloss-diet-pills.com/

WaterGym®
WaterGym is a water aerobic workout for men and women which mimics running, biking, weight lifting & more! Excellent flotation belt and workout videos sold here!
http://www.watergym.com/

Heavy Construction Equipment
Parts for Heavy Construction Equipments
http://www.jeongsol.com/

WeightWatchers.com
Personalized diet, recipes and fitness programs designed for healthy weight loss.
http://www.weightwatchers.com

Exploratorium: ExploraNet
San Francisco's Exploratorium museum
http://www.exploratorium.edu/

Tried and True Fitness
Free weight loss products and programs, plus an exercise guide with hundreds of free weight exercises.
http://www.free-weight-loss-resources.com/