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#1
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This guy Jack Houweling puts it in perspective.
https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. -- Jeff |
#2
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On 4/5/14, 3:45 PM, woodchucker wrote:
This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. I'm glad I picked up on the Canadian accent, because the guy kept saying "mil" when referring to his measurements. It wasn't until he showed the reading on his gauge that I realized he was talking millimeters and not thousandths of an inch. Do all Canadians really say "mil" in reference to millimeters? -- -MIKE- "Playing is not something I do at night, it's my function in life" --Elvin Jones (1927-2004) -- http://mikedrums.com ---remove "DOT" ^^^^ to reply |
#3
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On Saturday, April 5, 2014 8:56:32 PM UTC-4, -MIKE- wrote:
On 4/5/14, 3:45 PM, woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. I'm glad I picked up on the Canadian accent, because the guy kept saying "mil" when referring to his measurements. It wasn't until he showed the reading on his gauge that I realized he was talking millimeters and not thousandths of an inch. Do all Canadians really say "mil" in reference to millimeters? It's not a Canadian thing, but a metric thing. In the lab when working with milliliters, it's common to refer to them as 'mils'. A 'mil' is commonly used but the context must be known for it to have meaning (i.e length, volume, mass). -- -MIKE- "Playing is not something I do at night, it's my function in life" --Elvin Jones (1927-2004) -- http://mikedrums.com ---remove "DOT" ^^^^ to reply |
#4
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Somebody wrote:
This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail ------------------------------------------------------------ Just illustrates what every engineering student is taught about column loading. Euler column formula. P = n ? 2 E I / L 2 (1) Lew |
#5
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![]() "Lew Hodgett" wrote: Somebody wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail ------------------------------------------------------------ Just illustrates what every engineering student is taught about column loading. Euler column formula. P = n ? 2 E I / L 2 (1) ---------------------------------------------------------------- This will help clarify things. http://tinyurl.com/obu22nw Lew |
#6
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wrote:
It's not a Canadian thing, but a metric thing. In the lab when working with milliliters, it's common to refer to them as 'mils'. A 'mil' is commonly used but the context must be known for it to have meaning (i.e length, volume, mass). A 'mil' is also an angular measurement (milliradian) commonly used in the military for adjusting rifle/sniper and artillery fire, among other things. An artillery 'Forward Observer" bets his life in close combat on the fact that: "1 mil of angle subtends an arc of 1 meter (+/-) at 1,000 meters." (actually it is the chord of the arc he is attempting to correctly calculate to get rounds on target, but close counts when the effective burst radius of a 105mm round is 50 meters). For (American) military purposes there are 6400 'mils' in a circle ... actually a bit less mathematically, but close enough for horseshoes, hand grenades, and artillery fire. -- www.ewoodshop.com (Mobile) |
#7
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On 4/6/2014 11:17 PM, Swingman wrote:
wrote: It's not a Canadian thing, but a metric thing. In the lab when working with milliliters, it's common to refer to them as 'mils'. A 'mil' is commonly used but the context must be known for it to have meaning (i.e length, volume, mass). A 'mil' is also an angular measurement (milliradian) commonly used in the military for adjusting rifle/sniper and artillery fire, among other things. An artillery 'Forward Observer" bets his life in close combat on the fact that: "1 mil of angle subtends an arc of 1 meter (+/-) at 1,000 meters." (actually it is the chord of the arc he is attempting to correctly calculate to get rounds on target, but close counts when the effective burst radius of a 105mm round is 50 meters). For (American) military purposes there are 6400 'mils' in a circle ... actually a bit less mathematically, but close enough for horseshoes, hand grenades, and artillery fire. And I always thought a mil was a ton of money! |
#8
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On 4/8/2014 5:36 AM, Leon wrote:
On 4/6/2014 11:17 PM, Swingman wrote: wrote: It's not a Canadian thing, but a metric thing. In the lab when working with milliliters, it's common to refer to them as 'mils'. A 'mil' is commonly used but the context must be known for it to have meaning (i.e length, volume, mass). A 'mil' is also an angular measurement (milliradian) commonly used in the military for adjusting rifle/sniper and artillery fire, among other things. An artillery 'Forward Observer" bets his life in close combat on the fact that: "1 mil of angle subtends an arc of 1 meter (+/-) at 1,000 meters." (actually it is the chord of the arc he is attempting to correctly calculate to get rounds on target, but close counts when the effective burst radius of a 105mm round is 50 meters). For (American) military purposes there are 6400 'mils' in a circle ... actually a bit less mathematically, but close enough for horseshoes, hand grenades, and artillery fire. And I always thought a mil was a ton of money! or a tiny amount of money - $.001 mahalo, jo4hn |
#9
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On Sunday, 6 April 2014 01:56:32 UTC+1, -MIKE- wrote:
I'm glad I picked up on the Canadian accent, because the guy kept saying "mil" when referring to his measurements. It wasn't until he showed the reading on his gauge that I realized he was talking millimeters and not thousandths of an inch. Mil, short for milli. Milli just means "one-one thousandth of". It needs context to fully clarify. In the UK millimetres were abbreviated (when spoken) to "milli" whilst "mil" referred to 1/1000 of an inch. This is according to my grandad who was in the trade up until the 1950s or so. I have no idea what the it is now, but I am pretty certain it's all metric, so mil or milli would refer to millimetres. |
#10
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#11
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In article , -MIKE-
wrote: I'm glad I picked up on the Canadian accent, because the guy kept saying "mil" when referring to his measurements. It wasn't until he showed the reading on his gauge that I realized he was talking millimeters and not thousandths of an inch. Do all Canadians really say "mil" in reference to millimeters? I typically say "thou" or "ten thou" for imperial, and "mil" for metric, eh? -- ³Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.² -- Aristophanes |
#12
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On 4/7/14, 9:31 AM, Dave Balderstone wrote:
In article , -MIKE- wrote: I'm glad I picked up on the Canadian accent, because the guy kept saying "mil" when referring to his measurements. It wasn't until he showed the reading on his gauge that I realized he was talking millimeters and not thousandths of an inch. Do all Canadians really say "mil" in reference to millimeters? I typically say "thou" or "ten thou" for imperial, and "mil" for metric, eh? I guess I wonder how we could be in such a hurry to save syllables. Are we that lazy we can't say the whole word? :-) It's kind of like (the opposite) when people speak initialisms or acronyms that are much longer to say than the actual words they shorten in writing. -- -MIKE- "Playing is not something I do at night, it's my function in life" --Elvin Jones (1927-2004) -- http://mikedrums.com ---remove "DOT" ^^^^ to reply |
#13
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On Mon, 07 Apr 2014 11:12:01 -0500, -MIKE-
wrote: On 4/7/14, 9:31 AM, Dave Balderstone wrote: In article , -MIKE- wrote: I'm glad I picked up on the Canadian accent, because the guy kept saying "mil" when referring to his measurements. It wasn't until he showed the reading on his gauge that I realized he was talking millimeters and not thousandths of an inch. Do all Canadians really say "mil" in reference to millimeters? I typically say "thou" or "ten thou" for imperial, and "mil" for metric, eh? I guess I wonder how we could be in such a hurry to save syllables. Are we that lazy we can't say the whole word? :-) It's nothing more (or less) than jargon. It makes for more efficient communication among people who have learned the dialect. Those silly syllables do add up. It's kind of like (the opposite) when people speak initialisms or acronyms that are much longer to say than the actual words they shorten in writing. What, and stop creating new words? Where would we be without the "laser". Now, where did I put my "laser"? ;-) |
#14
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Dave Balderstone wrote in
news:070420140831505537%dave@N_O_T_T_H_I_Sbalderst one.ca: I typically say "thou" or "ten thou" for imperial, and "mil" for metric, eh? The sooner we can eliminate the "mil" unit, the better. It's just uncommon enough that those unfamiliar with the unit assume it means millimeter, and close enough that the error won't be obvious. Puckdropper -- Make it to fit, don't make it fit. |
#15
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In article om,
Puckdropper wrote: The sooner we can eliminate the "mil" unit, the better. It's just uncommon enough that those unfamiliar with the unit assume it means millimeter, and close enough that the error won't be obvious. Makes more sense for the USA to join the rest of the world... -- ³Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.² -- Aristophanes |
#16
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Dave Balderstone wrote in
news:070420141833299273%dave@N_O_T_T_H_I_Sbalderst one.ca: In article om, Puckdropper wrote: The sooner we can eliminate the "mil" unit, the better. It's just uncommon enough that those unfamiliar with the unit assume it means millimeter, and close enough that the error won't be obvious. Makes more sense for the USA to join the rest of the world... Sure would be nice to eliminate the dual system. I don't care if the rest of the world joins us or we join the rest of the world, simply not having two systems would help quite a bit. I'll still have to have two sets of wrenches, taps, nuts, etc, but maybe my great grandchildren won't have to. Let's do it, it's for the children! Puckdropper -- Make it to fit, don't make it fit. |
#17
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On 4/7/2014 7:33 PM, Dave Balderstone wrote:
In article om, Puckdropper wrote: The sooner we can eliminate the "mil" unit, the better. It's just uncommon enough that those unfamiliar with the unit assume it means millimeter, and close enough that the error won't be obvious. Makes more sense for the USA to join the rest of the world... We are not ready for mediocre yet! ;~) |
#18
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On Saturday, 5 April 2014 21:45:09 UTC+1, woodchucker wrote:
This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Interesting, cheers! |
#19
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On Saturday, April 5, 2014 4:45:09 PM UTC-4, woodchucker wrote:
This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. Some years ago, I was getting equipment made for my company (American) in the UK. I learned that the UK company used the term "mil" to refer to millimeters and the term "thou" to refer to thousandths of an inch. All went well dimensionally until we started to do flow measurements. The UK company even hooked up an old flow meter that measured gallons per minute. It took us a while to figure out that the poor performance we got was because they were measuring in Imperial Gallons and I was used to using US Gallons. Afetr we realized that, all was well. Bill -- Jeff |
#20
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woodchucker wrote:
This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. Well, it is interesting, but not very true to real life. For one, wood does not move as much in that direction as it does against the grain. For another - his video does not take into consideration the constraints on the wood. If his video were to be taken as gospel, there is not a wooden floor in the world that would remain stable through the changing seasons. Yet another theoretical exercise that does not reflect the real world. -- -Mike- |
#21
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On 4/7/2014 12:50 PM, Mike Marlow wrote:
woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. Well, it is interesting, but not very true to real life. For one, wood does not move as much in that direction as it does against the grain. For another - his video does not take into consideration the constraints on the wood. If his video were to be taken as gospel, there is not a wooden floor in the world that would remain stable through the changing seasons. Yet another theoretical exercise that does not reflect the real world. Actually you should watch his other video, what he does, is setup a test across the grain. He cuts a piece of wood, cutting across the grain. He puts it in a box to dry it out. Just a box with a light bulb. He measures the difference between the original piece and the dried piece. That is where he is using his offset amount from. So yes it does move that much. His example is just taking the difference in wood movement that he measured, and also less than what he measured. So it is really enlightening. A small sliver adds up to lots of bending. -- Jeff |
#22
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Good example. I used to calculate the 'increase of diameter' of
a band placed around the world. It was set up to put a tight belt and then add a 12" extension of the band. Question - how high would the belt rise over the earth... ? Lesson - just leave a little room for wood expansion. Martin On 4/5/2014 3:45 PM, woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. |
#23
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Martin Eastburn wrote:
Good example. I used to calculate the 'increase of diameter' of a band placed around the world. It was set up to put a tight belt and then add a 12" extension of the band. Question - how high would the belt rise over the earth... ? Lesson - just leave a little room for wood expansion. Martin On 4/5/2014 3:45 PM, woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. I recall that question. I never could really believe the answer that came with it. For perspective on the answer that I heard I compared the result of adding 12" to a man's belt. Oddly the earth answer was greater than the mans belt example. I highly suspect that the earth answer that I heard was missing some digits to the right of the decimal point. Basically you are adding 1/12,672,000 to the diameter in the earth example. |
#24
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On 4/9/2014 3:07 AM, Leon wrote:
Martin Eastburn wrote: Good example. I used to calculate the 'increase of diameter' of a band placed around the world. It was set up to put a tight belt and then add a 12" extension of the band. Question - how high would the belt rise over the earth... ? Lesson - just leave a little room for wood expansion. Martin On 4/5/2014 3:45 PM, woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. I recall that question. I never could really believe the answer that came with it. For perspective on the answer that I heard I compared the result of adding 12" to a man's belt. Oddly the earth answer was greater than the mans belt example. I highly suspect that the earth answer that I heard was missing some digits to the right of the decimal point. Basically you are adding 1/12,672,000 to the diameter in the earth example. Hummmmmmm Seems to be just shy of 4" added to the radius. |
#25
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On 4/9/2014 8:22 AM, Leon wrote:
On 4/9/2014 3:07 AM, Leon wrote: Martin Eastburn wrote: Good example. I used to calculate the 'increase of diameter' of a band placed around the world. It was set up to put a tight belt and then add a 12" extension of the band. Question - how high would the belt rise over the earth... ? Lesson - just leave a little room for wood expansion. Martin On 4/5/2014 3:45 PM, woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. I recall that question. I never could really believe the answer that came with it. For perspective on the answer that I heard I compared the result of adding 12" to a man's belt. Oddly the earth answer was greater than the mans belt example. I highly suspect that the earth answer that I heard was missing some digits to the right of the decimal point. Basically you are adding 1/12,672,000 to the diameter in the earth example. Hummmmmmm Seems to be just shy of 4" added to the radius. Make that diameter. |
#26
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THe calculated the difference by using only symbols. Never
used real numbers until the end. Martin On 4/9/2014 3:07 AM, Leon wrote: Martin Eastburn wrote: Good example. I used to calculate the 'increase of diameter' of a band placed around the world. It was set up to put a tight belt and then add a 12" extension of the band. Question - how high would the belt rise over the earth... ? Lesson - just leave a little room for wood expansion. Martin On 4/5/2014 3:45 PM, woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. I recall that question. I never could really believe the answer that came with it. For perspective on the answer that I heard I compared the result of adding 12" to a man's belt. Oddly the earth answer was greater than the mans belt example. I highly suspect that the earth answer that I heard was missing some digits to the right of the decimal point. Basically you are adding 1/12,672,000 to the diameter in the earth example. |
#27
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In article
Martin Eastburn writes: Good example. I used to calculate the 'increase of diameter' of a band placed around the world. It was set up to put a tight belt and then add a 12" extension of the band. Question - how high would the belt rise over the earth... ? About 2". Diameter and circumference are linearly related. You add 1 to diameter, you add pi to circumference. You add 12 to circumference, you add 12/pi to diameter. That's about 4", 2" on each side of the planet. I've heard the claim that it is some huge difference, but never seen anyone show their work. Lesson - just leave a little room for wood expansion. Martin On 4/5/2014 3:45 PM, woodchucker wrote: This guy Jack Houweling puts it in perspective. https://www.youtube.com/watch?v=11FS...em-uploademail Geez I knew it moved, but when you see how a trapped wood movement can appear it's remarkable. -- Drew Lawson What would Brian Boitano do? |
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