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Forum index » Science and Technology » Math » Recreational
McDonald's Golden Cycloids?
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moriman
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Joined: 06 Apr 2006
Posts: 26

PostPosted: Sat Jul 01, 2006 7:00 pm    Post subject: Re: McDonald's Golden Cycloids? Reply with quote

"Alexmcw" <amcwill417@msn.com> wrote in message
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Quote:

"moriman" <moriman-spamless@btinternet.com> wrote in message
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"Alexmcw" <amcwill417@msn.com> wrote in message
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"Mark Spahn" <mspahn@localnet.com> wrote in message
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The logo of the McDonald's fast-food restaurants
is a pair of "Golden Arches", shown here:

.... The question remaining then is what is the eccentricity.

The fact that McD's think they sell edible food┐


Alex



Well, a lot of people eat it (including myself). And you probably do.


Yup, it's a bit like Micro$oft, we know they're dirty but we just can't help
ourselves :-D


Quote:
Alex

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Alexmcw
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Joined: 03 Mar 2006
Posts: 7

PostPosted: Fri Jun 30, 2006 6:53 pm    Post subject: Re: McDonald's Golden Cycloids? Reply with quote

"moriman" <moriman-spamless@btinternet.com> wrote in message
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Quote:
"Alexmcw" <amcwill417@msn.com> wrote in message
news:1e0pg.16$W15.346@eagle.america.net...

"Mark Spahn" <mspahn@localnet.com> wrote in message
news:12a8ia2es4qfebd@corp.supernews.com...
The logo of the McDonald's fast-food restaurants
is a pair of "Golden Arches", shown here:

.... The question remaining then is what is the eccentricity.

The fact that McD's think they sell edible food┐


Alex



Well, a lot of people eat it (including myself). And you probably do.


Alex
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moriman
science forum beginner


Joined: 06 Apr 2006
Posts: 26

PostPosted: Fri Jun 30, 2006 12:36 pm    Post subject: Re: McDonald's Golden Cycloids? Reply with quote

"Alexmcw" <amcwill417@msn.com> wrote in message
news:1e0pg.16$W15.346@eagle.america.net...
Quote:

"Mark Spahn" <mspahn@localnet.com> wrote in message
news:12a8ia2es4qfebd@corp.supernews.com...
The logo of the McDonald's fast-food restaurants
is a pair of "Golden Arches", shown here:

.... The question remaining then is what is the eccentricity.

The fact that McD's think they sell edible food┐

Quote:

Alex

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Alexmcw
science forum beginner


Joined: 03 Mar 2006
Posts: 7

PostPosted: Fri Jun 30, 2006 2:44 am    Post subject: Re: McDonald's Golden Cycloids? Reply with quote

"Mark Spahn" <mspahn@localnet.com> wrote in message
news:12a8ia2es4qfebd@corp.supernews.com...
Quote:
The logo of the McDonald's fast-food restaurants
is a pair of "Golden Arches", shown here:
http://en.wikipedia.org/wiki/Golden_Arches

But what is the shape of these arches?
Are they closer to two lobes of a cycloid curve
http://mathworld.wolfram.com/Cycloid.html
with the y-axis uniformly distorted?

Or is their shape closer to the shape of |sin x|
from x=0 to x=2 pi (where |...| represents absolute value),
again with the y-axis uniformly distorted?

-- Mark Spahn


Maybe the two equal parts of an ellipse. The question remaining then is
what is the eccentricity.

Alex
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matt271829-news@yahoo.co.
science forum Guru


Joined: 11 Sep 2005
Posts: 846

PostPosted: Thu Jun 29, 2006 11:03 pm    Post subject: Re: McDonald's Golden Cycloids? Reply with quote

Mark Spahn wrote:
Quote:
The logo of the McDonald's fast-food restaurants
is a pair of "Golden Arches", shown here:
http://en.wikipedia.org/wiki/Golden_Arches

But what is the shape of these arches?
Are they closer to two lobes of a cycloid curve
http://mathworld.wolfram.com/Cycloid.html
with the y-axis uniformly distorted?

Or is their shape closer to the shape of |sin x|
from x=0 to x=2 pi (where |...| represents absolute value),
again with the y-axis uniformly distorted?

-- Mark Spahn

The reference at http://mathforum.org/library/drmath/view/54466.html
thinks they are parabolas.
http://www.sciencefirst.com/vw_prdct_mdl.asp?prdct_mdl_cd=40505 says
catenaries.
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Mark Spahn
science forum addict


Joined: 07 Jul 2005
Posts: 62

PostPosted: Thu Jun 29, 2006 9:42 pm    Post subject: McDonald's Golden Cycloids? Reply with quote

The logo of the McDonald's fast-food restaurants
is a pair of "Golden Arches", shown here:
http://en.wikipedia.org/wiki/Golden_Arches

But what is the shape of these arches?
Are they closer to two lobes of a cycloid curve
http://mathworld.wolfram.com/Cycloid.html
with the y-axis uniformly distorted?

Or is their shape closer to the shape of |sin x|
from x=0 to x=2 pi (where |...| represents absolute value),
again with the y-axis uniformly distorted?

-- Mark Spahn
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