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Topic: Coin Flipping Question ?
Replies: 8   Last Post: Nov 8, 2016 9:36 PM

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Gordon Sande

Posts: 137
Registered: 5/13/10
Re: Coin Flipping Question ?
Posted: Nov 8, 2016 2:55 PM
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On 2016-11-08 18:27:57 +0000, Virgil said:

> In article <nvsock$ubi$>, Bob <rgsros@notme.invalid>
> wrote:

>> Hello,
>> Have always been bothered by this.
>> Would appreciate it if someone could explain it for me.
>> I know that what I am defining as the experiment is not practical in the
>> "real world," but let me define the following anyway, as the conditions:
>> I have a few thousand "discs"
>> They are absolutely identical, down to the atomic level.
>> Each side has a thin coating of something; one side red, one side blue.
>> The coatings are also identical; same thickness, absorbency, etc.
>> So the resultant coins are absolutely identical.
>> In every way.
>> I now have a mechanical gadget that flips each one, again identically.
>> Same velocity, momentum, etc., etc. imparted.
>> Absolutely identical flipping motion imparted for each one.
>> There are no outside influences, other than gravity.
>> No air currents, solar wind or pressure, etc.
>> Nothing.
>> Will I see the typical 50 % - 50 % split ?
>> (For this case by colors,rather than heads/tails)

> Not necessarily, as quantum effects in otherwise identical experiments
> are known to produce differing results.

One expects tat the OP's disks are quite macro so are not going to behave
as waves like an electron or other small object where quantum effects dominate.

>> Why ?

> Quantum effects!

>> e.g., must there be "some" incremental outside influence, or...?

> Only if you regard quantum effects as being outside effects.

>> Thanks,
>> Bob

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