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I.F.
electronics forum Guru
Joined: 30 Mar 2006
Posts: 407
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 Posted: Wed Jul 05, 2006 7:37 pm Post subject:
Batteries
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Do batteries get heavier as they're charged? |
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Sjouke Burry
electronics forum Guru Wannabe
Joined: 29 May 2005
Posts: 190
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| Posted: Wed Jul 05, 2006 10:08 pm Post subject:
Re: Batteries
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ian field wrote:
| Quote: | Do batteries get heavier as they're charged?
e=m*c*c, so in theory, yes. |
I doubt if you can measure it. |
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jasen
electronics forum Guru Wannabe
Joined: 18 Jun 2006
Posts: 204
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| Posted: Thu Jul 06, 2006 11:10 am Post subject:
Re: Batteries
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On 2006-07-05, ian field <dai.ode@ntlworld.com> wrote:
| Quote: | Do batteries get heavier as they're charged?
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not measurably. but they must, E=mc^2.
non-sealed lead-acid batteries actually get lighter :)
--
Bye.
Jasen |
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I.F.
electronics forum Guru
Joined: 30 Mar 2006
Posts: 407
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| Posted: Thu Jul 06, 2006 5:59 pm Post subject:
Re: Batteries
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"Sjouke Burry" <burrynulnulfour@ppllaanneett.nnlll> wrote in message
news:44ac386e$0$2032$ba620dc5@text.nova.planet.nl...
| Quote: | ian field wrote:
Do batteries get heavier as they're charged?
e=m*c*c, so in theory, yes.
I doubt if you can measure it.
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Any idea what the theoretical math formula looks like! (or is that it?!). |
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Bob Myers
electronics forum Guru Wannabe
Joined: 25 Jun 2005
Posts: 171
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| Posted: Thu Jul 06, 2006 6:23 pm Post subject:
Re: Batteries
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"ian field" <dai.ode@ntlworld.com> wrote in message
news:4ccrg.30335$OT.28154@newsfe6-win.ntli.net...
| Quote: |
"Sjouke Burry" <burrynulnulfour@ppllaanneett.nnlll> wrote in message
news:44ac386e$0$2032$ba620dc5@text.nova.planet.nl...
ian field wrote:
Do batteries get heavier as they're charged?
e=m*c*c, so in theory, yes.
I doubt if you can measure it.
Any idea what the theoretical math formula looks like! (or is that it?!).
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That's it. The Gospel According to St. Albert (Einstein),
which says that energy is equivalent to mass. If you add
energy to anything, it therefore is effectively gaining mass -
but if you work that formula out with some actual
numbers (and that "c * c" bit is a Really Big Number), it
winds up taking a LOT of energy to equal just a little teeny-
tiny mass. Hence, you are not very likely to be able to
measure the change - we're probably talking (off the top
of my head here) micrograms, if that.
Bob M. |
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I.F.
electronics forum Guru
Joined: 30 Mar 2006
Posts: 407
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| Posted: Thu Jul 06, 2006 10:30 pm Post subject:
Re: Batteries
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"jasen" <jasen@free.net.nz> wrote in message
news:40bc.44acefa9.ae39f@clunker.homenet...
| Quote: | On 2006-07-05, ian field <dai.ode@ntlworld.com> wrote:
Do batteries get heavier as they're charged?
not measurably. but they must, E=mc^2.
non-sealed lead-acid batteries actually get lighter :)
--
Bye.
Jasen
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Would that be due to gassing? |
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jasen
electronics forum Guru Wannabe
Joined: 18 Jun 2006
Posts: 204
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| Posted: Fri Jul 07, 2006 8:48 am Post subject:
Re: Batteries
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On 2006-07-06, ian field <dai.ode@ntlworld.com> wrote:
| Quote: | Do batteries get heavier as they're charged?
not measurably. but they must, E=mc^2.
non-sealed lead-acid batteries actually get lighter :)
Would that be due to gassing?
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yeah.
Bye.
Jasen |
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JANA
electronics forum Guru
Joined: 30 Apr 2005
Posts: 341
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| Posted: Tue Jul 11, 2006 2:27 am Post subject:
Re: Batteries
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When charging a battery, you are only transferring electrons from one side
the other. Even if you were able to add electrons to the battery,
considering their extremely small mass, I would doubt you could even weight
a number of megawatts.
--
JANA
_____
"ian field" <dai.ode@ntlworld.com> wrote in message
news:yxUqg.71771$lQ.45956@newsfe3-gui.ntli.net...
Do batteries get heavier as they're charged? |
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