Difference between revisions of "Inertia"
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| − | Inertia is a property of matter that causes it to resist changes in | + | '''Inertia''' is a property of matter that causes it to resist changes in [[velocity]]; or, in other words, the resistance against being set in [[motion]], and resistance to being stopped when in motion.<ref name="KelvinTides">{{cite web |title=August 25, 1882 |author=W. Thomson (Lord Kelvin) |publisher= The British Association, The Glasgow Science Lectures Association |date=August 25, 1882 |chapter= Appendix A |url=http://zapatopi.net/kelvin/papers/the_tides.html |aaccessdate=June 13, 2015}}</ref> |
| − | [[ | + | [[Newton]] [[scientific discovery|discovered]] that bodies which have equal [[heaviness]] have equal ''inertia'', i.e. that if the property of inertia is possed to an equal degree by two different [[substance]]s, the have equal heaviness. One of his [[proof]]s was founded on the celebrated guinea and feather [[experiment]], showing that the guinea and feather fall at the same rate when the resistance of the [[air]] is removed. Another was founded upon making pendulums of different substances—[[lead]], [[iron]], and [[wood]] to vibrate, and [[scientific observation|observing]] their times of [[vibration]]. This discovery is the very essence of the Newton's 'first great point' pertaining to the law of [[gravitation]]. The other is that the force between any two bodies diminishes as the distance increases, according to the law of inverse square of the distance.<ref name="KelvinTides"/> |
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| + | ==References== | ||
| + | <references/> | ||
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| + | [[Category:Physics]] | ||
Latest revision as of 14:19, July 13, 2016
Inertia is a property of matter that causes it to resist changes in velocity; or, in other words, the resistance against being set in motion, and resistance to being stopped when in motion.[1]
Newton discovered that bodies which have equal heaviness have equal inertia, i.e. that if the property of inertia is possed to an equal degree by two different substances, the have equal heaviness. One of his proofs was founded on the celebrated guinea and feather experiment, showing that the guinea and feather fall at the same rate when the resistance of the air is removed. Another was founded upon making pendulums of different substances—lead, iron, and wood to vibrate, and observing their times of vibration. This discovery is the very essence of the Newton's 'first great point' pertaining to the law of gravitation. The other is that the force between any two bodies diminishes as the distance increases, according to the law of inverse square of the distance.[1]
References
- ↑ 1.0 1.1 W. Thomson (Lord Kelvin) (August 25, 1882). August 25, 1882. The British Association, The Glasgow Science Lectures Association.
