Essays on the active powers of the human mind; An inquiry into the human mind on the principles of common sense; and An essay on quantity. These are the measure of themselves, and of all things else that are measurable. Number is applicable to some things to which it is not commonly applied by the vulgar.
Essays on the active powers of the human mind; An inquiry into the human mind on the principles of common sense; and An essay on quantity. Till force then is defined, and by that definition a measure of it assigned, we fight in the dark about a vague idea, which is not sufficiently determined to be admitted into any mathematical proposition.
And when such a definition is given, the controversy will presently be ended. Of the Newtonian measure of force. You say, the force of a body in motion is as its velocity; either you mean to lay this down as a definition as Newton himself has done; or you mean to affirm it as a proposition capable of proof.
If you mean to lay it down as a definition, it is no more than if you should say, I call that a double force which gives a double velocity to the same body, a triple force which gives a triple velocity, and so on in proportion. This I entirely agree to; no mathematical definition of force can be given that is more clear and simple, none that is more agreeable to the common use of the word in language.
For since all men agree, that the force of the body being the same, the velocity must also be the same; the force being increased or diminished, the velocity must be so also; what can be more natural or proper than to take the velocity for the measure of the force?
Several other things might be advanced to show, that this definition agrees best with the common popular notion of the word force. If two bodies meet directly with a shock, which mutually destroys their motion without producing any other sensible effect, the vulgar would pronounce, without hesitation, that they met with equal force; and so they do, according to the measure of force above laid down: In mechanics, where by a machine two powers or weights are kept in equilibrio, the vulgar would reckon, that these powers act with equal force; and so by this definition they do.
The power of gravity being constant and uniform, any one would expect that it should give equal degrees of force to a body in equal times; and so by this definition it does. So that this definition is not only clear and simple, but it agrees best with the use of the word force in common language, and this, I think, is all that can be desired in a definition.
But if you are not satisfied with laying it down as a definition, that the force of a body is as its velocity, but will needs prove it by demonstration or experiment, I must beg of you, before you take one step in the proof, to let me know what you mean by force, and what by a double or a triple force.
This you must do by a definition which contains a measure of force. Some primary measure of force must be taken for granted, or laid down by way of definition; otherwise we can never reason about its.Essays on the Active Powers of the Human Mind [Thomas Reid, Baruch Brody] on lausannecongress2018.com *FREE* shipping on qualifying offers.
A treatise on ethics, on the human being's performance and motives and freedom, that makes perceptive thrusts into the loopholes of skepticism. Includes and page introduction by Baruch Brody. The following other wikis use this file: Usage on lausannecongress2018.com Index:Essays on the active powers of the human mind; An inquiry into the human mind on the principles of common sense; and An essay on lausannecongress2018.com Essays on the Active Powers of the Human Mind.
Facsimile) Until recently the standard edition of the Inquiry and the Essays has been the sixth edition of William Hamilton (ed.), Edinburgh: Maclachlan and .
Reid Essays On The Active Powers Of The Human Mind; GENERAL IN POWER ACTIVE I—OF ESSAY Reid Thomas Mind Human the of Powers Active the on Essays IV CHAPTER POWER OF IDEA THE OF OPINION HUME’S MR OF.
Essays on the active powers of the human mind ; An inquiry into the human mind on the principles of common sense ; and An essay on quantity Item Preview remove-circle Share or Embed This lausannecongress2018.com: Essays on the Active Powers of the Human Mind Thomas Reid ESSAY I—OF ACTIVE POWER IN GENERAL.
CHAPTER IV. OF MR HUME’S OPINION OF THE IDEA OF POWER. This very ingenious author adopts the principle of Mr Locke before men-tioned—that all our simple ideas are derived either from sensation or reﬂection.