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  #1  
Old 09-19-2011, 04:13 PM
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Electricity, How Does it Work?

http://scienceblogs.com/pharyngula/2010/07/frickin_electricity_how_does_i.php?y

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Old 09-19-2011, 04:37 PM
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Old 09-19-2011, 05:23 PM
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  #4  
Old 09-19-2011, 07:27 PM
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Once you figure out what it is, find some way to store it.

I mean, store electrical energy for use later, while not involving some energy conversion such as electrical energy to water or air pressure, or electrical energy to chemical energy as in a battery.

Solve THAT mystery and you and your solar cell and wind turbine farms could soon become wealthy!
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  #5  
Old 09-19-2011, 08:17 PM
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Quote:
Originally Posted by Jim H View Post
Once you figure out what it is, find some way to store it.

I mean, store electrical energy for use later, while not involving some energy conversion such as electrical energy to water or air pressure, or electrical energy to chemical energy as in a battery.

Solve THAT mystery and you and your solar cell and wind turbine farms could soon become wealthy!
Like a capacitor does?
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  #6  
Old 09-19-2011, 09:30 PM
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Originally Posted by Billybob View Post
Like a capacitor does?
Yes, but there is not much energy stored in a capacitor - one quick,bright flash and it's gone...

There is a lot more energy stored in a AAA battery, pound-for-pound, but that's storing electrical energy in a potential chemical reaction.

Electrons are hard to store in the huge volumes needed for power grid storage.
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  #7  
Old 09-19-2011, 10:07 PM
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Electricity is a general term encompassing a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning, static electricity, and the flow of electrical current in an electrical wire. In addition, electricity encompasses less familiar concepts such as the electromagnetic field and electromagnetic induction.

The word is from the New Latin ēlectricus, "amber-like"[a], coined in the year 1600 from the Greek ήλεκτρον (electron) meaning amber (hardened plant resin), because electrical effects were produced classically by rubbing amber.

In general usage, the word "electricity" adequately refers to a number of physical effects. In a scientific context, however, the term is vague, and these related, but distinct, concepts are better identified by more precise terms:

Electric charge: a property of some subatomic particles, which determines their electromagnetic interactions. Electrically charged matter is influenced by, and produces, electromagnetic fields.
Electric current: a movement or flow of electrically charged particles, typically measured in amperes.
Electric field: an influence produced by an electric charge on other charges in its vicinity.
Electric potential: the capacity of an electric field to do work on an electric charge, typically measured in volts.
Electromagnetism: a fundamental interaction between the magnetic field and the presence and motion of an electric charge.

The most common use of the word "electricity" is less precise. It refers to:

Electric power provided commercially by the electrical power industry. In a loose but common use of the term, "electricity" may be used to mean "wired for electricity" which means a working connection to an electric power station. Such a connection grants the user of "electricity" access to the electric field present in electrical wiring, and thus to electric power.

Electrical phenomena have been studied since antiquity, though advances in the science were not made until the seventeenth and eighteenth centuries. Practical applications for electricity however remained few, and it would not be until the late nineteenth century that engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry and society. Electricity's extraordinary versatility as a source of energy means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. Electrical power is the backbone of modern industrial society, and is expected to remain so for the foreseeable future.
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  #8  
Old 09-19-2011, 10:19 PM
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Originally Posted by Jim H View Post
Yes, but there is not much energy stored in a capacitor - one quick,bright flash and it's gone...

There is a lot more energy stored in a AAA battery, pound-for-pound, but that's storing electrical energy in a potential chemical reaction.

Electrons are hard to store in the huge volumes needed for power grid storage.
Well I wasn't attesting to the practicality of capacitor storage given the state of today’s technology just remarking that the functional conversion-less storage of electrical power already exists.

As a young guy I worked repairing underwater flash units and the rule was to keep one hand in your pocket until you had personally verified the discharge of caps that powered the Xenon flash tube.

On a related note there has been some remarkable advancement in ultra caps, some of which are used in hybrids and electric vehicles. There is also an outfit that uses Russian manufactured ultra caps to parallel the lead acid batteries for cold starting diesel engines in extreme cold conditions.
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  #9  
Old 09-19-2011, 10:22 PM
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Originally Posted by tbomachines View Post
Electricity is a general term .....expected to remain so for the foreseeable future.
How about some attribution, lest someone thinks it's your own work! Or quotation marks at the very least!
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  #10  
Old 09-19-2011, 10:34 PM
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all cults use spurious reasoning to suggest things are unknowable... except, of course, by those members of the cult who have a hotline to the secret. i have heard such arguments from christians, buddhists and others. by the way, bob jones university is a real piece of work, with their fears of miscegenation and sexual intercourse.
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Old 09-20-2011, 08:15 AM
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Quote:
Originally Posted by Billybob View Post
How about some attribution, lest someone thinks it's your own work! Or quotation marks at the very least!
Not needed, no one would confuse that with his own work.
( Just having a little fun--no insult intended--I would expect the same to be said of my posts if I had an extended quote.)
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Old 09-20-2011, 09:05 AM
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Originally Posted by Billybob View Post
How about some attribution, lest someone thinks it's your own work! Or quotation marks at the very least!
This isn't an academic paper where citations in the correct form are needed. NOBODY, AFAIK, is getting points or anything worthwhile for it.
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  #13  
Old 09-20-2011, 10:30 AM
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Quote:
Originally Posted by tbomachines View Post


Electricity is a general term encompassing a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning, static electricity, and the flow of electrical current in an electrical wire. In addition, electricity encompasses less familiar concepts such as the electromagnetic field and electromagnetic induction.

The word is from the New Latin ēlectricus, "amber-like"[a], coined in the year 1600 from the Greek ήλεκτρον (electron) meaning amber (hardened plant resin), because electrical effects were produced classically by rubbing amber.

In general usage, the word "electricity" adequately refers to a number of physical effects. In a scientific context, however, the term is vague, and these related, but distinct, concepts are better identified by more precise terms:

Electric charge: a property of some subatomic particles, which determines their electromagnetic interactions. Electrically charged matter is influenced by, and produces, electromagnetic fields.
Electric current: a movement or flow of electrically charged particles, typically measured in amperes.
Electric field: an influence produced by an electric charge on other charges in its vicinity.
Electric potential: the capacity of an electric field to do work on an electric charge, typically measured in volts.
Electromagnetism: a fundamental interaction between the magnetic field and the presence and motion of an electric charge.

The most common use of the word "electricity" is less precise. It refers to:

Electric power provided commercially by the electrical power industry. In a loose but common use of the term, "electricity" may be used to mean "wired for electricity" which means a working connection to an electric power station. Such a connection grants the user of "electricity" access to the electric field present in electrical wiring, and thus to electric power.

Electrical phenomena have been studied since antiquity, though advances in the science were not made until the seventeenth and eighteenth centuries. Practical applications for electricity however remained few, and it would not be until the late nineteenth century that engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry and society. Electricity's extraordinary versatility as a source of energy means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. Electrical power is the backbone of modern industrial society, and is expected to remain so for the foreseeable future.
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  #14  
Old 09-20-2011, 12:13 PM
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This isn't an academic paper where citations in the correct form are needed. NOBODY, AFAIK, is getting points or anything worthwhile for it.


Thanks for that, ah “information”! People of integrity often make a point to credit others for their work as a matter of principle, absent any concern of withheld points or anything worthwhile. Or at the very least to distinguish the work of others from their own so as to avoid the false impression that they possess knowledge that may be obviously outside of their particular style or even beyond their demonstrated capacity.

I might add that no one that I'm aware of has claimed this forum was “an academic paper where citations in the correct form are needed.” Perhaps someone might be interested in what a poster has plagiarized and is interested in the source of the info, or perhaps someone finds that some posted material is worthy of some challenge and would be best served by understanding if the original source of the information is the intellect of the poster or some other.

Not everyone is limited to or content to incessantly conjure "straw man arguments" ad infinitum.
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  #15  
Old 09-20-2011, 12:25 PM
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Not needed, no one would confuse that with his own work.
( Just having a little fun--no insult intended--I would expect the same to be said of my posts if I had an extended quote.)
None taken. I thought it was pretty obvious, but then again I was mocking the clear lightheartedness of this thread and the original post (and a couple folks being a lot more serious) which obviously went over some heads.

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