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Posted by Jerry Stuckle on 12/05/07 12:15
Marc Christiansen wrote:
> Jerry Stuckle <jstucklex@attglobal.net> wrote:
>> Marc Christiansen wrote:
>>> Jerry Stuckle <jstucklex@attglobal.net> wrote:
>>>> Toby A Inkster wrote:
>>>>> Rik Wasmus wrote:
>>>>>
>>>>> ____
>>>>> 1. It is noteworthy that the UK's motorway speed limit (70 miles/hour) is
>>>>> almost exactly 4 millilightyears per fortnight (it's about 4.0009353).
>>>>>
>>>> Toby,
>>>>
>>>> With a claim like that, I had to check it. I think your figures are a
>>>> bit off.
>>>>
>>>> 1 light year is about 5.87849981×10^12 miles. In one fortnight that
>>>> would be about 225,322,374,647 miles. 1/1000 of that would be
>>>> 225,322,374 miles. I think you'd have to be going a lot faster than 70
>>>> mph to get that many miles in a fortnight. :-)
>>>>
>>> What did you calculate to get 225,322,374,647 miles? 1 light year *
>>> 26.09? If yes, why?
>>> But Toby got it slightly wrong too. 1 light year per fortnight is
>>> 5.87849981×10^12 miles / (14 * 24 hours), about 17495535149 miles/hour,
>>> so 70 miles/hour are about 4 nano light years per fortnight.
>>>
>>> Ciao
>>> Marc
>>>
>> Either of 2 ways - 5.87849981×10^12 / 365 * 14 or 186 282.397 * 60 8 60
>> * 24 * 14. Both give similar answers.
>>
>> But you're wrong - you need to divide 5.87849981×10^12 by 365 to get the
>> number of miles in a light day, then multiply by 14 days.
>
> Only if you want the length of a light fortnight in miles. Which is not
> the same as lightyear / fortnight. Light fortnight is a length,
> lightyear / fortnight is a velocity.
>
>> I have no idea where you got 5.87849981×10^12 / (14 * 24). But one
>> light hour is 670,616,629 miles or so.
>
> 14 * 24 is the number of hours in a fortnight, so dividing the length of
> one lightyear in miles by this number gives me one lightyear / fortnight
> in miles / hour.
>
> Marc
>
OK, but he wasn't looking at one lightyear per fortnight (which violates
most current laws of physics). He was looking at a light fortnight -
the distance light travels in a fortnight.
--
==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
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