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What are significancies for the correct value of C/D in daily life?

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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #60 on: February 27, 2019, 05:53:54 PM »
Quote from: markjo on February 27, 2019, 07:35:11 AM
Quote from: Danang on February 21, 2019, 04:17:26 PM
Quote from: markjo on February 20, 2019, 06:45:00 PM
Quote from: Danang on February 20, 2019, 03:54:21 PM
So..
What is the role of pi for precise, non bargainable measurements?
Rubber wheel is not a fixed object coz it can be flexible. Using pi or phew gives no significant difference.
Any precision mechanical device that has gears, shafts, pulleys or the like.  Cylinders in internal combustion engines.  The movements of the read/write heads in a hard disc drive.  Lots of real world devices need the precision of pi in order to work properly.  Phew would stink in such applications.

It's all about Radius precision. By experiment and by calculation pi cannot develop. It only repeats Eurel, Archimedes etc.
I dare you to cultivate pi/4 as a basis of calculations. (But I believe nothing fruitful will be resulted).
Phew already did it with phew/4 and produced a number proper formulas that fits reality.
I dare you to provide a real world example where phew is used and is more accurate than pi.

If radius precision is regarded as pi precision, that's unfair.
Everyone can set up a radius precision regardless they believe in pi or phew. 8)
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #61 on: February 27, 2019, 05:59:04 PM »
Quote from: MicroBeta on February 27, 2019, 04:07:35 PM
Quote from: markjo on February 27, 2019, 07:35:11 AM
Quote from: Danang on February 21, 2019, 04:17:26 PM
Quote from: markjo on February 20, 2019, 06:45:00 PM
Quote from: Danang on February 20, 2019, 03:54:21 PM
So..
What is the role of pi for precise, non bargainable measurements?
Rubber wheel is not a fixed object coz it can be flexible. Using pi or phew gives no significant difference.
Any precision mechanical device that has gears, shafts, pulleys or the like.  Cylinders in internal combustion engines.  The movements of the read/write heads in a hard disc drive.  Lots of real world devices need the precision of pi in order to work properly.  Phew would stink in such applications.

It's all about Radius precision. By experiment and by calculation pi cannot develop. It only repeats Eurel, Archimedes etc.
I dare you to cultivate pi/4 as a basis of calculations. (But I believe nothing fruitful will be resulted).
Phew already did it with phew/4 and produced a number proper formulas that fits reality.
I dare you to provide a real world example where phew is used and is more accurate than pi.
He's been asked to do that before and he has failed every time.  This time won't be any different.

 :o  :o

 8)
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #62 on: February 27, 2019, 06:08:14 PM »
Quote from: Themightykabool on February 27, 2019, 05:53:20 PM
Dafuq?
We re entering scepti level geomtry here.

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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #63 on: February 27, 2019, 08:02:25 PM »
Who dares to perform the same method of measuring C/D ?
I guess nobody dares  :o



 8)
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Curiouser and Curiouser

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #64 on: February 28, 2019, 01:09:36 AM »
Quote from: Danang on February 27, 2019, 08:02:25 PM
Who dares to perform the same method of measuring C/D ?
I guess nobody dares  :o



 8)

I dare.

As everyone knows, you suck at precision measurement.

You don't even know what to measure.

In your video you measure from tip to tip of two notches of different depths. You should have measured from the base of where you made the original cut.



It makes a difference. You're measuring a distance that's too long. Go back and fish your piece of paper out of the trash and measure the correct distance.

Approximate scaling from your video, gives that your 22.85 should be closer to 22.65

Danang:   22.85 / 7.2 = 3.1736 (not 3.17157)
Corrected:  22.65 / 7.2 = 3.1458

And you haven't even bothered putting error bars on the measurements. Since you're so sloppy with measurements, let's be generous and say you're accurate to 0.5 mm. (0.05 cm)

The range of measurements is 22.6 / 7.25 = 3.117  to  22.7 / 7.15 = 3.175. You don't even have the accuracy to distinguish pi from your imaginary phew.

And I did do the experiment, but I actually know how to make a careful measurement.

(231.0mm +/- 0.2mm) [paper, but circumference measured correctly around a cylindrical not conical glass] / 73.5mm +/- 0.05mm [using calipers] = 3.138 to 3.148

You really do need to get a new hobby.
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #65 on: February 28, 2019, 01:47:22 AM »
Try again  8)
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #66 on: February 28, 2019, 01:50:10 AM »


:o
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Curiouser and Curiouser

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #67 on: February 28, 2019, 08:54:02 AM »
Quote from: Danang on February 28, 2019, 01:47:22 AM
Try again  8)

Why? I took your oh-so-frightening dare.

I dare you to use some tools better than poorly cut paper, a tapered glass, and a plastic ruler.

Does danang dare? No.
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #68 on: February 28, 2019, 04:24:12 PM »
Quote from: Curiouser and Curiouser on February 28, 2019, 08:54:02 AM
Quote from: Danang on February 28, 2019, 01:47:22 AM
Try again  8)

Why? I took your oh-so-frightening dare.

I dare you to use some tools better than poorly cut paper, a tapered glass, and a plastic ruler.

Does danang dare? No.

Lol. My experiment can be repeated by anyone. >> To fit Pi is impossible unless you use the corrupt pi tape method in which you have to ((( tilt ))) the pi tape. :o
And hey, why did you change my measurement facts?
And you still don't dare to show your experiment.

No vid is hoax.  8)
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MicroBeta

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #69 on: February 28, 2019, 04:39:44 PM »
Quote from: Danang on February 27, 2019, 08:02:25 PM
Who dares to perform the same method of measuring C/D ?
I guess nobody dares  :o



 8)
That is without a doubt one of the most inaccurate measurements of the circumference I've ever seen. 

You don't actually expect anyone to take that demonstration seriously?

Mike
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Themightykabool

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #70 on: March 01, 2019, 05:11:33 PM »
Try it with pvc pipe and not some conical mug.
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MicroBeta

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #71 on: March 01, 2019, 05:31:07 PM »
Quote from: Themightykabool on March 01, 2019, 05:11:33 PM
Try it with pvc pipe and not some conical mug.
That would get pi and not phew so he won't do it.
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #72 on: March 01, 2019, 05:35:12 PM »
As I said: my experiment is repeatable. So I dare anyone (including both of you, Kabool & Mike) :o to show his/her experiment. Use any cylinder material as you wish and let's see.
I'm quite confident. 8)
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MicroBeta

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #73 on: March 01, 2019, 07:33:19 PM »
Quote from: Danang on March 01, 2019, 05:35:12 PM
As I said: my experiment is repeatable. So I dare anyone (including both of you, Kabool & Mike) :o to show his/her experiment. Use any cylinder material as you wish and let's see.
I'm quite confident. 8)
I provided you with all the information of my measurements and you were unable to refute that shit....because you can't.
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #74 on: March 03, 2019, 01:17:25 AM »
Still no vid? Case closed.
Phew wins again. 8)
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NotSoSkeptical

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #75 on: March 03, 2019, 02:40:32 PM »


Not the best video, but a good demonstration of why Danang is wrong.
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Quote from: wise on April 07, 2023, 02:25:15 AM
That would put you in the same category as pedophile perverts like John Davis, NSS, robots like Stash, Shifter, and victimized kids like Alexey.
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #76 on: March 07, 2019, 01:42:31 AM »
Quote from: NotSoSkeptical on March 03, 2019, 02:40:32 PM


Not the best video, but a good demonstration of why Danang is wrong.

Lol if you can use a tape why should you use a rope??

Time for meal, dude~

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MicroBeta

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #77 on: March 07, 2019, 02:00:31 AM »
Quote from: Danang on March 07, 2019, 01:42:31 AM
Quote from: NotSoSkeptical on March 03, 2019, 02:40:32 PM


Not the best video, but a good demonstration of why Danang is wrong.

Lol if you can use a tape why should you use a rope??

Time for meal, dude~


His video is far more accurate than anything you've done.  I do find it interesting that you never try to debunk any evidence presented to you.  You merely dismiss it and try to misdirect away from it.  I have to wonder why that is.

Mike
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #78 on: March 07, 2019, 02:05:51 AM »
Quote from: MicroBeta on March 07, 2019, 02:00:31 AM
Quote from: Danang on March 07, 2019, 01:42:31 AM
Quote from: NotSoSkeptical on March 03, 2019, 02:40:32 PM


Not the best video, but a good demonstration of why Danang is wrong.

Lol if you can use a tape why should you use a rope??

Time for meal, dude~


His video is far more accurate than anything you've done.  I do find it interesting that you never try to debunk any evidence presented to you.  You merely dismiss it and try to misdirect away from it.  I have to wonder why that is.

Mike

In case I get bored with science, I am considering to try to be an ambassador of food.
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Stash

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #79 on: March 07, 2019, 02:15:49 AM »
Quote from: Danang on March 07, 2019, 02:05:51 AM
Quote from: MicroBeta on March 07, 2019, 02:00:31 AM
Quote from: Danang on March 07, 2019, 01:42:31 AM
Quote from: NotSoSkeptical on March 03, 2019, 02:40:32 PM


Not the best video, but a good demonstration of why Danang is wrong.

Lol if you can use a tape why should you use a rope??

Time for meal, dude~


His video is far more accurate than anything you've done.  I do find it interesting that you never try to debunk any evidence presented to you.  You merely dismiss it and try to misdirect away from it.  I have to wonder why that is.

Mike

In case I get bored with science, I am considering to try to be an ambassador of food.

Danang,
Considering your phew track record, I question, for the sake of humanity, your potential move into food services. Stick to phew  ;)
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #80 on: March 07, 2019, 07:27:46 AM »
Stash says:
"Danang,
Considering your phew track record, I question, for the sake of humanity, your potential move into food services. Stick to phew  ;)"

>> Wow that sounds awesome! And why did you say that? Aren't Rabinoz, JackBlack, Microbeta and other charismatic REers, for the idea "Sun is 93 million miles away?" 🌞
How can Phew compete them?🏃

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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #81 on: March 07, 2019, 07:32:55 AM »
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #82 on: March 07, 2019, 07:35:33 AM »
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Themightykabool

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #83 on: March 08, 2019, 04:28:50 AM »
Sun clearly so high above the clouds it could never achieve the below cloud sun set angle photos you fe claim is perspective.


Good job, dannag.
Keep posting RE proofs.
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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #84 on: March 09, 2019, 05:01:21 AM »
Yeah the sun is 93 million away.  8)

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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #85 on: March 12, 2019, 03:18:06 AM »
As the current textbooks are dying, go to Phew, okay?  8)
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Zaphod

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #86 on: March 17, 2019, 06:28:11 AM »
Stumbled across this earlier whilst putting off cleaning the chickens out!

" class="bbc_link" target="_blank" rel="noopener noreferrer">

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rabinoz

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #87 on: March 17, 2019, 03:14:27 PM »
Quote from: Danang on March 09, 2019, 05:01:21 AM
Yeah the sun is 93 million away.
At last, you got something right, congratulations :)!

It's about to that you read the real history of the measurement of the distance to the sun:

Hundreds of years BC the sun was known to be a great distance from the earth, but being so far made accurate measures impossible without more modern instruments.
Quote from: Wikipedia
Astronomical unit, History
The book On the Sizes and Distances of the Sun and Moon, which has long been ascribed to Aristarchus, says that he calculated the distance to the Sun to be between 18 and 20 times the distance to the Moon, whereas the true ratio is about 389.174. The latter estimate was based on the angle between the half moon and the Sun, which he estimated as 87° (the true value being close to 89.853°). Depending on the distance that Van Helden assumes Aristarchus used for the distance to the Moon, his calculated distance to the Sun would fall between 380 and 1520 Earth radii.
With astronomical telescopes that could measure very small angles, a somewhat better estimate could be made:
Quote from: Wikipedia
Astronomical unit, History
A somewhat more accurate estimate can be obtained by observing the transit of Venus. By measuring the transit in two different locations, one can accurately calculate the parallax of Venus and from the relative distance of Earth and Venus from the Sun, the solar parallax α (which cannot be measured directly). Jeremiah Horrocks had attempted to produce an estimate based on his observation of the 1639 transit (published in 1662), giving a solar parallax of 15 arcseconds, similar to Wendelin's figure. The solar parallax is related to the Earth–Sun distance as measured in Earth radii by
A=cot(α)
The smaller the solar parallax, the greater the distance between the Sun and Earth: a solar parallax of 15" is equivalent to an Earth–Sun distance of 13750 Earth radii.
Finally
Quote from: Wikipedia
Astronomical unit, History
A better method for observing Venus transits was devised by James Gregory and published in his Optica Promata (1663). It was strongly advocated by Edmond Halley and was applied to the transits of Venus observed in 1761 and 1769, and then again in 1874 and 1882.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Despite the Seven Years' War, dozens of astronomers were dispatched to observing points around the world at great expense and personal danger: several of them died in the endeavour. The various results were collated by Jιrτme Lalande to give a figure for the solar parallax of 8.6″.
     

Historical estimates and measurements of the sun's distance.

The distance given by Christiaan Huygens is simply luck. He assumed that Venus was the same size as the earth and it just happens that Venus is almost the same size as the earth.

These distances are given in Astronomical Units which is defined as 149,597,870,700 metres (or 92,955,807 miles).

Since 1771 the sun's distance has been known to with 2.5% and that figure rapidly improved with more accurate "Transit of Venus" measurements and more recent methods.

Those interested in more detail about those "Transits of Venus" might read: Lecture 26: How Far to the Sun? The Venus Transits of 1761 & 1769.
« Last Edit: March 17, 2019, 03:19:56 PM by rabinoz »
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MicroBeta

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #88 on: March 17, 2019, 03:36:29 PM »
Danang this may help you understand reality.

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Danang

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Re: What are significancies for the correct value of C/D in daily life?
« Reply #89 on: March 17, 2019, 08:30:36 PM »
Wow... phew is wrong?? you guys made me think even more to start other activity instead of phewing. But you should first clarify about that round object: is its surface really flat?? Or a bit curved?? If you can give a convincing explanation, I will do non phew stuff. I'll become, as I said before, a food ambassador.

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