A strange oscillator

On 9/21/20 8:11 AM, Ricketty C wrote:
> On Monday, September 21, 2020 at 11:02:07 AM UTC-4, Lasse Langwadt Christensen wrote:
>> mandag den 21. september 2020 kl. 16.51.25 UTC+2 skrev Ricketty C:
>>> On Monday, September 21, 2020 at 12:48:43 AM UTC-4, Pimpom wrote:
>>>> On 9/20/2020 11:22 AM, bitrex wrote:
>>>>> On 9/18/2020 8:05 PM, RheillyPhoull wrote:
>>>>>> On 18/09/2020 7:34 pm, Jeff Layman wrote:
>>>>>>> On 18/09/2020 03:12, Ricketty C wrote:
>>>>>>>> On Thursday, September 17, 2020 at 9:43:28 PM UTC-4, bitrex wrote:
>>>>>>>>> <https://www.youtube.com/watch?v=UkgoSOSGrx4>
>>>>>>>>
>>>>>>>> That's a good one.&nbsp; No one can argue about something so entertaining.
>>>>>>>>
>>>>>>>> Sometimes it seems like all this group is good for is the lemons with
>>>>>>>> no lemonade.
>>>>>>>
>>>>>>> I think this one is even more entertaining:
>>>>>>> <https://www.youtube.com/watch?v=Nqk_nWAjBus>
>>>>>>>
>>>>>> Or if you have a spare 10 minutes make one of these !!
>>>>>>
>>>>>> <https://www.youtube.com/watch?v=kproPsch7i0>
>>>>>
>>>>> How about racing AA batteries:
>>>>>
>>>>> <https://youtu.be/7jqImhd8Ggc>
>>>>>
>>>> I'm wondering what the battery consumption is like.
>>>
>>> I haven't figured out what makes it go.  The battery is shorted by the coil between it's ends which makes a magnetic field through the coil.  It's a very low resistance so the current is high and a strong magnetic field.  But I can't picture how this is creating a force on the battery since the magnetic lines are parallel to the battery.
>>>
>>
>> there's a permanent magnet stuck to each end of the battery
> 
> Duh!  I was thinking this was about making contact and forgot they are magnets.  Cool, thanks.
> 
> I might have to make one of these.  I'll need to get bare wire.  My buss wire is enameled.  A friend with kids would love it.  The kids might like it too.
> 
> The coils will stand up better if they are wound on plastic tubes, but the movement of the coils is pretty cool.
> 
but no current will flow...!