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Groups > comp.lang.python > #110067 > unrolled thread
| Started by | Lawrence D’Oliveiro <lawrencedo99@gmail.com> |
|---|---|
| First post | 2016-06-17 16:12 -0700 |
| Last post | 2016-06-18 18:09 +0200 |
| Articles | 10 on this page of 30 — 15 participants |
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Re: value of pi and 22/7 Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-17 16:12 -0700
Re: value of pi and 22/7 Ian Kelly <ian.g.kelly@gmail.com> - 2016-06-17 17:49 -0600
Re: value of pi and 22/7 Steven D'Aprano <steve@pearwood.info> - 2016-06-18 11:19 +1000
Re: value of pi and 22/7 Ethan Furman <ethan@stoneleaf.us> - 2016-06-17 19:27 -0700
Re: value of pi and 22/7 Tim Harig <timharig@eternal-september.org> - 2016-06-18 05:47 +0000
Re: value of pi and 22/7 boB Stepp <robertvstepp@gmail.com> - 2016-06-18 10:22 -0500
Re: value of pi and 22/7 Christian Gollwitzer <auriocus@gmx.de> - 2016-06-18 09:56 +0200
Re: value of pi and 22/7 Random832 <random832@fastmail.com> - 2016-06-17 23:48 -0400
Re: value of pi and 22/7 Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-17 21:30 -0700
Re: value of pi and 22/7 Ian Kelly <ian.g.kelly@gmail.com> - 2016-06-17 23:18 -0600
Re: value of pi and 22/7 Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-06-20 10:25 +1200
Re: value of pi and 22/7 Steven D'Aprano <steve@pearwood.info> - 2016-06-20 12:07 +1000
Re: value of pi and 22/7 Grant Edwards <grant.b.edwards@gmail.com> - 2016-06-20 18:06 +0000
Re: value of pi and 22/7 Ian Kelly <ian.g.kelly@gmail.com> - 2016-06-19 23:19 -0600
Re: value of pi and 22/7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-06-20 16:22 +1000
Re: value of pi and 22/7 Ian Kelly <ian.g.kelly@gmail.com> - 2016-06-20 10:01 -0600
Re: value of pi and 22/7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-06-21 18:38 +1000
Re: value of pi and 22/7 Ian Kelly <ian.g.kelly@gmail.com> - 2016-06-20 10:09 -0600
Re: value of pi and 22/7 Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-19 22:51 -0700
Re: value of pi and 22/7 Marko Rauhamaa <marko@pacujo.net> - 2016-06-20 10:32 +0300
Re: value of pi and 22/7 Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-20 01:01 -0700
Re: value of pi and 22/7 Wildman <best_lay@yahoo.com> - 2016-06-20 17:24 -0500
Re: value of pi and 22/7 Marko Rauhamaa <marko@pacujo.net> - 2016-06-21 01:47 +0300
Re: value of pi and 22/7 Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-06-22 14:20 -0700
Re: value of pi and 22/7 Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-06-20 10:14 +1200
Re: value of pi and 22/7 Grant Edwards <grant.b.edwards@gmail.com> - 2016-06-20 17:53 +0000
Re: value of pi and 22/7 Marko Rauhamaa <marko@pacujo.net> - 2016-06-20 21:52 +0300
Re: value of pi and 22/7 Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-06-22 00:52 +1200
Re: value of pi and 22/7 Pete Forman <petef4+usenet@gmail.com> - 2016-06-18 13:05 +0100
Re: value of pi and 22/7 Johannes Bauer <dfnsonfsduifb@gmx.de> - 2016-06-18 18:09 +0200
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| From | Lawrence D’Oliveiro <lawrencedo99@gmail.com> |
|---|---|
| Date | 2016-06-20 01:01 -0700 |
| Message-ID | <8b99700a-6492-4982-a6a6-987e1761a5db@googlegroups.com> |
| In reply to | #110181 |
On Monday, June 20, 2016 at 7:32:54 PM UTC+12, Marko Rauhamaa wrote: > Width/height ratio of the pyramid of Cheops was so close to π/2 that UFO > enthusiasts were convinced alien technology was used in the construction > of the pyramids. They were also able to get the bases of the pyramids horizontal to within about a centimetre. Amazing achievement, but entirely achievable with bronze-age technology.
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| From | Wildman <best_lay@yahoo.com> |
|---|---|
| Date | 2016-06-20 17:24 -0500 |
| Message-ID | <96idnWw48cOA8PXKnZ2dnUU7-N2dnZ2d@giganews.com> |
| In reply to | #110185 |
On Mon, 20 Jun 2016 01:01:21 -0700, Lawrence D’Oliveiro wrote: > On Monday, June 20, 2016 at 7:32:54 PM UTC+12, Marko Rauhamaa wrote: > >> Width/height ratio of the pyramid of Cheops was so close to π/2 that UFO >> enthusiasts were convinced alien technology was used in the construction >> of the pyramids. > > They were also able to get the bases of the pyramids horizontal > to within about a centimetre. Amazing achievement, but entirely > achievable with bronze-age technology. I am not convinced on any of the theories on how the pyramids were built, or any other of the monolithic sites. But, I am in awe as to the fact that it was actually done. Just look at the numbers for the Great Pyramid. It is believed that it took 23 years for construction. It is estimated that there are somewhere between 2.0 to 2.4 million stones. I will use 2.0 million for the math... 23 * 365.25 * 24 * 60 / 2000000 = 6.04854 As you can see, a stone had to be cut, transported and put in place every 6 minutes 24 hours a day for 23 years. And if the stone count was actually 2.4 million, the time would be reduced to 5 minutes per stone. All I can say is wow! Another example is the fact that some ancient Central American cultures were able to lift and transport stones weighing up to 300 tons. We would have a very hard time doing that today with our modern machinery. I'm not trying to say that ET or $DIETY did it. I'm just point out the fact that something amazing was done. I keep an open mind to any possibility. Right now there is no actual proof to support any theory. -- <Wildman> GNU/Linux user #557453 "Be at war with your vices, at peace with your neighbors, and let every new year find you a better man." -Benjamin Franklin
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| From | Marko Rauhamaa <marko@pacujo.net> |
|---|---|
| Date | 2016-06-21 01:47 +0300 |
| Message-ID | <8737o7v5ns.fsf@elektro.pacujo.net> |
| In reply to | #110212 |
Wildman <best_lay@yahoo.com>: > As you can see, a stone had to be cut, transported and put in place > every 6 minutes 24 hours a day for 23 years. And if the stone count > was actually 2.4 million, the time would be reduced to 5 minutes per > stone. All I can say is wow! It probably means mostly that the Nile produced enough grain to feed a lot more people than were needed to till the land. Feudal ownership produced public works and a working economy. Nowadays, very few people are needed to till the land, but so far the farmers have been content with the amenities and gadgets provided by the industry. It has somewhat similarly been shown how the slave trade of the 17th century was generated by maize, which was introduced to West Africa. The soil produced vastly more people, which the local warlords sold to European slave traders. Marko
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| From | Lawrence D’Oliveiro <lawrencedo99@gmail.com> |
|---|---|
| Date | 2016-06-22 14:20 -0700 |
| Message-ID | <7ec322a6-db95-430b-b578-97b954cccca4@googlegroups.com> |
| In reply to | #110212 |
On Tuesday, June 21, 2016 at 10:24:46 AM UTC+12, Wildman wrote:
> I am not convinced on any of the theories on how the pyramids
> were built, or any other of the monolithic sites.
“Reality is that which, when you stop believing in it, doesn’t go away.”
-- Philip K Dick
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| From | Gregory Ewing <greg.ewing@canterbury.ac.nz> |
|---|---|
| Date | 2016-06-20 10:14 +1200 |
| Message-ID | <dsojq2Fel3aU1@mid.individual.net> |
| In reply to | #110083 |
Lawrence D’Oliveiro wrote: > I feel a new phrase coming on: “good enough for Bible work”! I understand there's a passage in the Bible somewhere that uses a 1 significant digit approximation to pi... -- Greg
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| From | Grant Edwards <grant.b.edwards@gmail.com> |
|---|---|
| Date | 2016-06-20 17:53 +0000 |
| Message-ID | <mailman.160.1466445243.2288.python-list@python.org> |
| In reply to | #110157 |
On 2016-06-19, Gregory Ewing <greg.ewing@canterbury.ac.nz> wrote:
> Lawrence D’Oliveiro wrote:
>
>> I feel a new phrase coming on: “good enough for Bible work”!
>
> I understand there's a passage in the Bible somewhere that
> uses a 1 significant digit approximation to pi...
A lot of the time, 3 is a good-enough approximation of π (it's less
than 5% off). Yesterday I needed to know if the globe on a light
fixture was 5", 6", or 7" diameter. Measure the circumference with a
tape, divide by 3, and Bob's your uncle. Of course if you have to do
that very often, you just by a diameter tape. :)
--
Grant Edwards grant.b.edwards Yow! I think I am an
at overnight sensation right
gmail.com now!!
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| From | Marko Rauhamaa <marko@pacujo.net> |
|---|---|
| Date | 2016-06-20 21:52 +0300 |
| Message-ID | <878txzvgji.fsf@elektro.pacujo.net> |
| In reply to | #110157 |
Gregory Ewing <greg.ewing@canterbury.ac.nz>: > Lawrence D’Oliveiro wrote: > >> I feel a new phrase coming on: “good enough for Bible work”! > > I understand there's a passage in the Bible somewhere that > uses a 1 significant digit approximation to pi... Yes: And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass it round about. [1 Kings 7:23] This and other entertaining stories in: <URL: https://www.amazon.com/History-PI-Beckmann/dp/B004XYXQ96> Marko
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| From | Gregory Ewing <greg.ewing@canterbury.ac.nz> |
|---|---|
| Date | 2016-06-22 00:52 +1200 |
| Message-ID | <dssrkqF9nspU1@mid.individual.net> |
| In reply to | #110211 |
Marko Rauhamaa wrote: > And he made a molten sea, ten cubits from the one brim to the other: > it was round all about, and his height was five cubits: and a line of > thirty cubits did compass it round about. [1 Kings 7:23] I think I know how that came about. It was actually filled with molten neutronium, and the gravitational field was distorting space enough to give a local circumference/diameter ratio of 3. -- Greg
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| From | Pete Forman <petef4+usenet@gmail.com> |
|---|---|
| Date | 2016-06-18 13:05 +0100 |
| Message-ID | <m1h9cqwvkt.fsf@iKarel.lan> |
| In reply to | #110067 |
Lawrence D’Oliveiro <lawrencedo99@gmail.com> writes:
> On Saturday, March 19, 2011 at 3:16:41 AM UTC+13, Grant Edwards wrote:
>>
>> On 2011-03-18, peter wrote:
>>
>>> The Old Testament (1 Kings 7,23) says ... "And he made a molten sea,
>>> ten cubits from the one brim to the other: it was round all about, and
>>> his height was five cubits: and a line of thirty cubits did compass it
>>> round about. ". So pi=3. End Of.
>>
>> There's nothing wrong with that value. The measurements were given
>> with one significant digit, so the ratio of the two measurements
>> should only have one significant digit.
>
> I’m not sure how you can write “30” with one digit...
>>> int('U', 36)
30
--
Pete Forman
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| From | Johannes Bauer <dfnsonfsduifb@gmx.de> |
|---|---|
| Date | 2016-06-18 18:09 +0200 |
| Message-ID | <nk3rn4$ss1$1@news.albasani.net> |
| In reply to | #110067 |
On 18.06.2016 01:12, Lawrence D’Oliveiro wrote: > I’m not sure how you can write “30” with one digit... 3e1 has one significant digit. Cheers, Johannes -- >> Wo hattest Du das Beben nochmal GENAU vorhergesagt? > Zumindest nicht öffentlich! Ah, der neueste und bis heute genialste Streich unsere großen Kosmologen: Die Geheim-Vorhersage. - Karl Kaos über Rüdiger Thomas in dsa <hidbv3$om2$1@speranza.aioe.org>
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