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From: Snidely <snidely.too@gmail.com>
Newsgroups: sci.lang,alt.usage.english
Subject: Re: OT: Converting miles/km
Date: Sun, 22 Sep 2024 12:04:02 -0700
Organization: Dis One
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Phil explained on 9/22/2024 :
> On 22/09/2024 11:19, Snidely wrote:
>> On Sunday, kami pointed out that ...
>>> On Sun, 22 Sep 2024 01:52:33 -0700, Snidely wrote:
>>>
>>>> Remember when kami bragged outrageously?  That was Sunday:
>>>>> On Thu, 19 Sep 2024 23:12:52 -0000 (UTC), Christian Weisgerber
>>>>> wrote:
>>>>>
>>>>>> I'm sorry, I don't know where to post this.  I'm crossposting to
>>>>>> alt.usage.english, because statute miles as a unit mostly afflict
>>>>>> the English-speaking world.
>>>>>>
>>>>>> So you want to convert between miles and kilometers.  The conversion
>>>>>> factor is... uh...  A 40-year-old calculator book provides a useful
>>>>>> tip:  Unless you're designing a space probe, you can use ln(5).
>>>>>>
>>>>>> WHAT?
>>>>>>
>>>>>> Yes, the natural logrithm of 5 approximates the conversion factor
>>>>>> between miles and kilometers; specifically one mile is about ln(5)
>>>>>> kilometers.  It's accurate to four digits.
>>>>>>
>>>>>> If nothing else, it's faster to type on a calculator.
>>>>>>
>>>>>> I think that's hysterical.
>>>>>
>>>>>
>>>>> simplest method is to multiply by 0.6
>>>>
>>>> There's no humor in that.
>>>>
>>>> -d
>>>
>>> an easier method would be, if the limit is 80 miles per hour,
>>> simply add half, which is 40 and then one tenth of that, which is
>>> 4 and multiply it by 2 which is 8, so 48 + 80 is 128 km/h
>>>
>>> similarly lets say 120 miles per hour, half 60, tenth times 2 is
>>> 12, so 72 + 120 = 192 km/h.
>> 
>> There's no humor in that.
>> 
>> -d
>> 
>
> <https://wesharman.wordpress.com/wp-content/uploads/2013/11/4525f-bkliban001.jpg>

That's a bit better.

-d

-- 
"First thing in the morning, before I have coffee, I read the obits, If 
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