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Re: [ATM] Dumb Question: how to measure a...

To: "Mutalib Abdallah" <atm@atmlist.net>
Subject: Re: [ATM] Dumb Question: how to measure a...
From: Richard <cnc@cncservo.co.uk>
Date: Wed, 31 May 2006 17:51:38 +0100
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Reply-to: Richard <cnc@cncservo.co.uk>
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Hi Mutalib,

Tuesday, May 30, 2006, 9:00:25 PM, you wrote:

MA> Given a circle of glass, how can I measure it to characterize its
MA> circularity?

One definition used in engineering quality control and design is

circularity = 4*pi*(area/perimeter^2)

A perfect circle has circularity = 1.0

-- 

Best regards,
  Richard in the UK

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References:
- [ATM] Dumb Question: how to measure a...
  - From: "Mutalib Abdallah" <omegatroid@hotmail.com>

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