Dictionary » S » Switches

Switches

switch

1. To strike with a switch or small flexible rod; to whip.

2. To swing or whisk; as, to switch a cane.

3. To trim, as, a hedge.

4. To turn from one railway track to another; to transfer by a switch; generally with off, from, etc.; as, to switch off a train; to switch a car from one track to another.

5. To shift to another circuit.

Origin: Switched; Switching.

1. A small, flexible twig or rod. Mauritania, on the fifth medal, leads a horse with something like a thread; in her other hand she holds a switch. (Addison)

2. A movable part of a rail; or of opposite rails, for transferring cars from one track to another.

3. A separate mass or trees of hair, or of some substance (at jute) made to resemble hair, worn on the head by women.

4. A mechanical device for shifting an electric current to another circuit. Safety switch, an arrangement of tracks whereby elevations otherwise insurmountable are passed. The track ascends by a series of zigzags, the engine running alternately forward and back, until the summit is reached.

(Science: physics) Switch board, a collection of switches in one piece of apparatus, so arranged that a number of circuits may be connected or combined in any desired manner. Switch grass.

(Science: botany) See grass.

Origin: Cf. OD. Swick a scourage, a whip. Cf. Swink, Swing.


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Future Human Evolution

... when measuring brain size by volume alone. In this island effect there is change in size but still looks relatively the same. Where epigenetics switches that on we could become the giant eyed as relatively fast as Darwin's island finches change genome switching to meet seasonal climate demands. ...

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by GaryGaulin
Sat May 02, 2009 9:21 pm
 
Forum: Evolution
Topic: Future Human Evolution
Replies: 41
Views: 5601

Natural selection is proven wrong

... in an easily fertilized population who adds extra excitement to a normally very boring sex-life. Epigenetics may play a role by the inheritable switches to produce males being passed on, then later the unused genes lose their function or take on a new one. What you call "coevolution" ...

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by GaryGaulin
Tue Apr 28, 2009 1:39 pm
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16275

Genetics in Sordaria fimicola and arrangement of ascopores

... ascus formation is non-existent so I'm not sure if this could even occur, but the only way I can see how this could happen is if two independent 'switches' happened, so that there was an initial arrangement of hh++hh++ but the 2+3rd ascopores switched (i.e. to form a h+h+ arrangement) and then ...

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by MikeJ
Mon Feb 02, 2009 2:04 pm
 
Forum: Genetics
Topic: Genetics in Sordaria fimicola and arrangement of ascopores
Replies: 1
Views: 604

Re: Offspring Selfishness changing into Parental altruism?

These are many genes that change and even reverse their function with the age of the individual. An example is GABA which switches from being inhibitory to being excitatory with age. Regarding altruism, I think that you are oversimplifying. Altruism is a complex behavior that is no ...

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by chaka8
Tue Jul 29, 2008 4:47 pm
 
Forum: Evolution
Topic: Offspring Selfishness changing into Parental altruism?
Replies: 5
Views: 1525

Biochemistry - Starvation

During starvation what switches on the gluconeogenic pathway, and am i right in thinking it's in the liver?

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by uhna
Sat May 24, 2008 4:59 pm
 
Forum: Human Biology
Topic: Biochemistry - Starvation
Replies: 1
Views: 1594
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