Re: Re: Combined Set, SetDelayed
- To: mathgroup at smc.vnet.net
- Subject: [mg100906] Re: [mg100875] Re: Combined Set, SetDelayed
- From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
- Date: Thu, 18 Jun 2009 04:50:55 -0400 (EDT)
- References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <200906170835.EAA08294@smc.vnet.net>
On 17 Jun 2009, at 17:35, Helen Read wrote:
> magma wrote:
>> Helen Read wrote:
>>> AES wrote:
>>>> Helen Read <h... at together.net> wrote:
>>>>> 0.811 seconds. The second version, using the function that
>>>>> values, took only 1.87003*10^-15 seconds.
>>>> The frequency of visible light is around 3*10^14 Hz, so that's
>>>> one period of a visible light wave. Is there maybe a typo here?
>>> No, no typo. Not sure what your point is.
>> I think AES point is that this timing figure seems a bit too
>> I personally got a timing of 1.33357*10^-17 sec. About 100 times
>> Now, a light signal - regardless of frequency - travels a distance of
>> about 40 angstrom during that time.
>> Is this meaningful or is it just a way for Mathematica to say that
>> operation was too fast to be timed properly?
> Fair enough, but it wasn't a typo. I was merely reporting
> Helen Read
> University of Vermont
and that's all there is to it...
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