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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Re: some food for thoughts

... of a body involves all kinds of cascades of gene activations across many chromosomes; much of what happens with X and Y is simply genetic switches. There are genes on the Y chromosome (SRY in particular) which are not in the X chromosome; and this gene does act as a switch for many other ...

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by ChrisHoStuart
Mon Oct 14, 2013 1:07 am
 
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Flaws of Life in a Tube

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by Tomn
Fri Nov 04, 2011 9:08 pm
 
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Topic: Flaws of Life in a Tube
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Views: 40783

Re: (Facilitated Diffusion), Carrier protein.

... significant force. If the energy barrier is low enough, a little thermal wiggle might be sufficient. You've encountered levers (perhaps electrical switches) that contain a spring so that the lever can be on one end-position or the other (say, left or right) but you must push against the spring ...

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by jonmoulton
Fri Jun 24, 2011 4:29 pm
 
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Re: Theories - Origin of Life

... be wasteful in energy for them to activate the lac operon in the presence of glucose. This operon is therefore described as a combination of switches, and that is exactly what it is. Now switches are decision nodes that allow a process to go one way or another depending on what the circumstances ...

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by scottie
Sat Apr 30, 2011 4:42 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
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Re: Salmonella and e. Coli

... of that event I became obsessed and I try to clean everything in my home. I used fantastik and bleach on in the house like door knobs, light switches, furniture, washed all bedding and clothing from that and everyday after that until I got the chance to do this cleaning. I had a baby a few ...

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by Babyfikra
Wed Oct 27, 2010 8:16 pm
 
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