I don't get it, why is metric better?

[Leon]

I am kinda on that way of thinking however I don't Build in metric so I can't say how much of a problem it would be. You always have to say somethin'meter/s. I could understand how somethin'meter/s could be misunderstood, when yelling to the guy on the ground cutting boards to length,he might hear sumthin'meter/s instead of somethin'meter/s.

When the prefix ends in the Uh sound it gets confusing.

I suppose they simply say "x" mil, cen, dec, kil and leave it at that.

Inches, feet, yards, and miles are pretty dissimilar sounding.

And there is that decimal thing, as you mentioned.

I suppose our fears of miscalculating metric measurements are as unfounded as the fears by those that hate fractions/Imperial measurements.

I still want to know how the you say half of 25mm. Well that would be

12,500 micrometers. Really?

[pyotr filipivich]

Yep.

As the "old farts(tm)" {the ones who can 'just tell' a .005 thou (inch) difference, but don't have a 'feel' for how large is a 10 mm bolt} die off, it will transition. And then we'll have people wondering what the hell size is a "quarter-twenty" and where can I get tools/parts for this? much as there are guys looking for Wentworth threads and tools.

(I recall a passage from a SciFi novel: 2000 years in the future, and the planet it baseball mad, because St Austin, the colony founder, was a baseball fan. When informed that the basepath is 27.43 meters long, a visitor asks "Why such a weird distance? Why don't they change it?" The answer given is "My Lady, this is Baseball.")

[Eli the Bearded]

I remember that scene....

David St. Hubbins: I do not, for one, think that the problem was that the band was down. I think that the problem may have been, that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf. Alright? That tended to understate the hugeness of the object.

Ian Faith: I really think you're just making much too big a thing out of it.

Derek Smalls: Making a big thing out of it would have been a good idea.

if you don't know)

Elijah

------ the tick marks go to eleven

[Eli the Bearded]

I'd use 1.25 centimeter or 12.5 millimeter. My wife uses 12mm. (And 6mm for quarter inch and 3mm for eighth inch.) She works with sewing patterns, though, and "rounding" off a full millimeter isn't significant.

Currently the inch is defined in terms of the metric system as exactly "25.4 mm":

National Conference on Weights and Measures, United States. Bureau of Standards, National Institute of Standards and Technology (U.S.) U.S. Department of Commerce, Bureau of Standards, 1936

Of course, that same document, around page 14, also gives the argument for standardizing lightbulb labeling on "watts" not "lumens" or "lumens per watt", a standard that gives us 9 watt "60 watt" LED bulbs today, so any reasoning must be understood to be dated.

Elijah

------ then again the standard is for *incandescent* bulbs

[DJ Delorie]

If we define the SI prefix "inchi-" as meaning "0.0254 times" then we can assume "inch" is just an abbreviation of "inchimeters", and presto! We're all on the metric system :-)

(and there's nothing wrong with saying 12 1/2 mm)

[pyotr filipivich]

Eli the Bearded on Mon, 29 Jul 2019 23:02:04

+0000 (UTC) typed in rec.woodworking the following:

And there is the issue. For how many decades have we measured lights by their power consumption?

[J. Clarke]

Well that's nice, but how does it apply to gasoline, mercury, or liquid hydrogen?

The same amount as what?

So? I seldom deal in one or ten of anything.

How does that help if you aren't dealing with water?

[DJ Delorie]

Or humans. Fahrenheit is convenient because normal outside temperatures range from 0 to 100 (ish). I don't care how comfortable the water is. But now I have to remember that -17 is cold and 38 is hot.

[DerbyDad03]

Whoosh!

(Hint: The subject line of this thread)

[J. Clarke]

Furriners can be amusing--"10 below zero isn't all that cold", then they go outside and get an unpleasant surprise.

[Eli the Bearded]

It's a 1936 standards document, so eight decades.

Elijah

------ over two hundred ninety kilodays (25.3 gigaseconds)

[Leon]

Is there a marking that means 12 1/2 mm on a rule?

And then you are adding fractions to make half of 25 mm simpler to visualize.

[Leon]

Worse than the imperial/metric argument is the "Feels Like Temperature".

Can we simply report absolute temperatures and humidity?

If the actual temperature is 98 degrees F and the humidity is 90% and the "feels like" is 111 degrees F, does Bob who weighed 250 lbs last year think that the "feels like temp" feels the same after he gains 100 lbs? I think not.

[dpb]

On 7/30/2019 12:55 PM, Leon wrote: ...

But, it was good spending money to sit in the environmental lab back when NASA was funding the work to develop the correlations. Sometimes pretty uncomfortable, but broke undergrad's put up w/ a lot for a few bucks! :) And, for the most part, one could manage to get some good study time in for multi-tasking! :)

...

If they would just say "Heat Index" I'd be fine with it...altho sometimes "it's better not to know" :)

[Leon]

Exactly! ;~)

[DJ Delorie]

I have a PDF of what I call an "anti-ruler" for just such an occasion. It has 0-10 in (tenths marks) on one edge, and 0-25cm (1/2 - 1/8 marks) on the other.

[DJ Delorie]

You mean, where water freezes at 273.2K and boils at 373.2K ?

My furnace controller actually has a bit of this logic in it. If the humidity is high, it's allowed to cool the house a bit more to compensate. As the house dries, the temperature rises until it gets to the set point. Turns out this works *remarkably* well at keeping that house at the same "feels like" temperature.

[Clare Snyder]

It will still "feel like" 111 degrees with no humidity to fat Bob.

111 with no humidity will feel a lot worse at 350 than it did at 250lbs

[Clare Snyder]

We used to call it "humidex" but we had to "dumb it down" to "feels like" because nobody could figure uot what :Humiudex" (or humidity index" meant.

[Clare Snyder]

Better mae that 12.5mm