Bouncing cells?
 

That crazy Ozzie is at it again:

https://www.youtube.com/watch?v=PRf9JTg3QwA

Fascinating...

Bouncing cells?
 

On a sunny day (Fri, 16 Aug 2013 21:59:11 -0700) it happened DaveC
wrote in
:

That crazy Ozzie is at it again:

https://www.youtube.com/watch?v=PRf9JTg3QwA

Fascinating...

Nice,
facinating,
I just measured the weight of 3 eneloop AAA cells.
2 good ones measure 11.77 and 11.72 gram, fully charged
and one that is bad (high Ri) also charged, measured 12.28 gram
?????
Later I will measure one of these good ones when it is empty.
The bad one (that is heavier!) bounces more...

????

Bouncing cells?
 

Jan Panteltje wrote:
On a sunny day (Fri, 16 Aug 2013 21:59:11 -0700) it happened DaveC
wrote in
:

That crazy Ozzie is at it again:

https://www.youtube.com/watch?v=PRf9JTg3QwA

Fascinating...

Nice,
facinating,
I just measured the weight of 3 eneloop AAA cells.
2 good ones measure 11.77 and 11.72 gram, fully charged
and one that is bad (high Ri) also charged, measured 12.28 gram
?????
Later I will measure one of these good ones when it is empty.
The bad one (that is heavier!) bounces more...

????
Shows that electrons have more mass due to less bounce; heaver cell
shows that the lost electrons have NEGATIVE weight due to the NEGATIVE
charge.
Now combine these effects with a cyclo-magnetic positronator, and one
can make either a neg-energy generator, or a graviotometric repellor
(AKA anti-gravity machine).

Bouncing cells?
 

On a sunny day (Sat, 17 Aug 2013 05:45:55 GMT) it happened Jan Panteltje
wrote in :

On a sunny day (Fri, 16 Aug 2013 21:59:11 -0700) it happened DaveC
wrote in
:

That crazy Ozzie is at it again:

https://www.youtube.com/watch?v=PRf9JTg3QwA

Fascinating...

Nice,
facinating,
I just measured the weight of 3 eneloop AAA cells.
2 good ones measure 11.77 and 11.72 gram, fully charged
and one that is bad (high Ri) also charged, measured 12.28 gram
?????
Later I will measure one of these good ones when it is empty.
The bad one (that is heavier!) bounces more...

????

OK, follow up.
Eneloop (those are rechargeable NiMH BTW) do no show a weight difference between full and empty.
A defective one is heavier (this was overcharged in a ^!@%&^!@%duracell charger, it killed several eneloops,
using a different charger now).
The extra weight is probably caused by some chemical reaction grabbing something from the air,
water? CO2? Now that would trigger all them climate idiots,
store CO2 in batteries LOL.
Really do not know, but it is heavier...

Forgot to do the bounce test on the empty one...

Bouncing cells?
 

On Sun, 18 Aug 2013 05:14:21 GMT, Jan Panteltje
wrote:

Forgot to do the bounce test on the empty one...

The video mentions alkaline batteries. The Eneloop is a NiMH
rechargable battery.

Rechargable batteries have a safety valve that will blow off gas if
the battery is greatly overcharged. This would suggest that a fully
charged battery has more gas in it than a discharged one. If that is
correct, it would follow that fully charged battery should bounce more
than an empty one.
--
RoRo

Bouncing cells?
 

On a sunny day (Sun, 18 Aug 2013 11:00:54 +0200) it happened Robert Roland
wrote in :

On Sun, 18 Aug 2013 05:14:21 GMT, Jan Panteltje
wrote:

Forgot to do the bounce test on the empty one...

The video mentions alkaline batteries. The Eneloop is a NiMH
rechargable battery.

Yes I mentioned that.

If so it is not detectable on my scales (resolution 10 grams)
I have a more sensitive one too, but those batteries are too heavy for it.
Would have to set up some differential measurement method, but not interesting enough.


Rechargable batteries have a safety valve that will blow off gas if
the battery is greatly overcharged. This would suggest that a fully
charged battery has more gas in it than a discharged one.

But a balloon full of gas, the right gas, helium or hydrogen for example, will measure lighter.
Even hot air will do.

;-)



If that is
correct, it would follow that fully charged battery should bounce more
than an empty one.

Well try it, would make interesting youtube.

Bouncing cells?
 

"Jan Panteltje" wrote in message ...

On a sunny day (Sun, 18 Aug 2013 11:00:54 +0200) it happened Robert Roland
wrote in :

On Sun, 18 Aug 2013 05:14:21 GMT, Jan Panteltje
wrote:

Forgot to do the bounce test on the empty one...

The video mentions alkaline batteries. The Eneloop is a NiMH
rechargable battery.

Yes I mentioned that.

If so it is not detectable on my scales (resolution 10 grams)
I have a more sensitive one too, but those batteries are too heavy for it.
Would have to set up some differential measurement method, but not
interesting enough.


Rechargable batteries have a safety valve that will blow off gas if
the battery is greatly overcharged. This would suggest that a fully
charged battery has more gas in it than a discharged one.

But a balloon full of gas, the right gas, helium or hydrogen for example,
will measure lighter.
Even hot air will do.

;-)



If that is
correct, it would follow that fully charged battery should bounce more
than an empty one.





Is it not more the case that the amount of bounce has more to do with the
shock waves moving through the medium inside the battery, rather than the
actual mass of the battery?
e.g. a battery full of a glass-like medium would bounce more than if that
same medium was changed by chemical reaction into a more jelly type medium?



Cheers,


Gareth.

Bouncing cells?
 

On a sunny day (Sun, 18 Aug 2013 11:00:54 +0200) it happened Robert Roland
wrote in :


If so it is not detectable on my scales (resolution 10 grams)
Typo, 10 milli gram

Bouncing cells?
 

On Sun, 18 Aug 2013 11:35:19 +0100, "Gareth Magennis"
wrote:

Is it not more the case that the amount of bounce has more to do with the
shock waves moving through the medium inside the battery, rather than the
actual mass of the battery?

Yes, exactly. Gas is compressible and elastic, while liquids are not.
Try filling a football with water and see the difference.

In Kip Kay's video which Dave Jones refers to, it is also mentioned:
http://kipkay.com/episodes/amazing-w...est-batteries/
--
RoRo

Bouncing cells?
 

Is it not more the case that the amount of bounce has more to do with the
shock waves moving through the medium inside the battery, rather than the
actual mass of the battery?
e.g. a battery full of a glass-like medium would bounce more than if that
same medium was changed by chemical reaction into a more jelly type medium?

Weight difference cannot be ignored. Maybe both weight and density play
roles?

Bouncing cells?
 

I think a careful examination of the end caps will show that there is indeed gas pressure in the discharged cells. This would cause the bounce. The amount an object will bounce off a hard (supposedly) surface is not related only to its elasticity, there are other factors.