Dictionary » D » Demonstrations



1. The act of demonstrating; an exhibition; proof; especially, proof beyond the possibility of doubt; indubitable evidence, to the senses or reason. Those intervening ideas which serve to show the agreement of any two others are called proofs; and where agreement or disagreement is by this means plainly and clearly perceived, it is called demonstration. (Locke)

2. An expression, as of the feelings, by outward signs; a manifestation; a show. Did your letters pierce the queen to any demonstration of grief? (Shak) Loyal demonstrations toward the prince. (Prescott)

3. (Science: anatomy) The exhibition and explanation of a dissection or other anatomical preparation.

4. (Mil) a decisive exhibition of force, or a movement indicating an attack.

5. (Science: logic) The act of proving by the syllogistic process, or the proof itself.

6. (Science: mathematics) a course of reasoning showing that a certain result is a necessary consequence of assumed premises; these premises being definitions, axioms, and previously established propositions.

(Science: logic) direct, or positive, demonstration, one in which the correct conclusion is the immediate sequence of reasoning from axiomatic or established premises; opposed to indirect, or negative, demonstration (called also reductio ad absurdum), in which the correct conclusion is an inference from the demonstration that any other hypothesis must be i 3c8 ncorrect.

Origin: L. Demonstratio: cf. F. Demonstration.

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Re: How to be "good at the bench"

... everything when somebody is giving instructions. • Confess mistakes!! • Clean up immediately after you have used something! Equipment rules • Get demonstrations of every equipment in the lab, even when you know to use it. Things may be handled differently from lab to lab. • Wash, return, clean ...

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by jangajarn
Sat May 23, 2009 7:15 pm
Forum: General Discussion
Topic: How to be "good at the bench"
Replies: 4
Views: 20865


... pretty sure that you should find some good explanation if you pick a physics textbook. You will probably find there much better explanations and demonstrations and applications of entropy that I would ever be able to provide you with. As for your last comment about the wrongness of the use of ...

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by canalon
Sun Jan 25, 2009 8:52 pm
Forum: General Discussion
Topic: Entropy
Replies: 14
Views: 6906

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... of the mathematical procedure used to calculate it". Jensen and Weng (1994) and Carroll (1995) provide detailed empirical and analytical demonstrations of the reality of g. Suffice to note for the purposes of this review that they find that g is remarkably robust and invariant across ...

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by TJJ
Fri May 16, 2008 12:13 am
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 75
Views: 332822

The Fiber Disease

... of thousands with active masses in the picograms. This set of attributes translates into potentialities for a wide range of applications. Recent demonstrations of NEMS-based nanomechanical electrometry, signal processing, and mass detection have attracted much attention. Materials that can reversibly ...

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by Nadas Moksha
Fri Oct 27, 2006 9:34 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6246578

The Fiber Disease

... capabilities than those based on today's communication infrastructure. Many of the technologies related to the Photonic-Empowered Application demonstrations at iGRID2002 have been developed on OMNInet, a metro area photonic networking testbed in Chicago. OMNInet has been established, in part, ...

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by London
Tue Oct 03, 2006 4:08 pm
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6246578
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