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Groups > sci.physics > #596434
| From | jimp@specsol.spam.sux.com |
|---|---|
| Newsgroups | sci.physics |
| Subject | Re: Viewing the spokes |
| Date | 2016-09-10 00:10 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <rkvbad-vs1.ln1@mail.specsol.com> (permalink) |
| References | <nq1q63$bdd$1@gioia.aioe.org> <4415adab-bce4-441b-a953-9ba8d36f5549@googlegroups.com> <57d32ee0$0$43803$c3e8da3$5e5e430d@news.astraweb.com> |
benj <benj@nobody.net> wrote: > On 9/9/2016 12:08 PM, nuny@bid.nes wrote: >> On Monday, August 29, 2016 at 10:08:25 AM UTC-7, Sergio wrote: >>> Viewing the spokes >>> >>> A wheel with spokes rolls on the ground. A stationary camera takes a >>> picture of the wheel. Due to the nonzero exposure time of the camera, >>> the spokes will generally appear blurred. At what location(s) in the >>> picture does (do) the spoke(s) not appear >>> blurred? >> >>> >>> answer, >>> >>> >>> The contact point on the ground does not look blurred, because it is >>> instantaneously at rest. >> >> There is no "instantaneous". The wheel *moves* while the shutter is open, hence the contact patch will move, hence the lowermost spokes will be blurred. >> >> Now, if you want to talk about which spokes will be *least* blurred... >> >> >> Mark L. Fergerson >> > Actually, Mark, only the point of the wheel touching the ground which > would be the rim is at rest. And even then that "point' will be > rotating. But as we all know from the establishment science everyone > here believes in, the rotation of a point particle will not produce any > blurring in the camera image. OF course that "point particle" is NOT > located on a spoke so for that reason your answer stands as correct. A point is a mathematical construct and has nothing to do with cameras in the real world. During the time the shutter is open, EVERYTHING on the wheel is moving some amount both in rotation and linearly. How blurred anything is depends on the rotational and linear speed of the wheel relative to the view of the camera, the exposure time and the resolution of the camera. -- Jim Pennino
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Viewing the spokes Sergio <invalid@invalid.com> - 2016-08-29 12:08 -0500
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-08-29 18:00 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-08-29 21:00 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-08-30 01:14 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-08-29 22:45 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-08-30 04:14 +0000
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-08-29 21:59 -0700
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-08-30 05:16 +0000
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-08-29 23:00 -0700
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-08-29 18:29 -0700
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-08-29 18:29 -0700
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-08-29 18:46 -0700
Re: Viewing the spokes benj <benj@nobody.net> - 2016-08-30 19:40 -0400
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-08-30 22:07 -0700
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-08-30 23:48 -0700
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-08-31 09:54 -0700
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-09-02 10:00 -0700
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-02 13:23 -0700
Re: Viewing the spokes The Starmaker <starmaker@ix.netcom.com> - 2016-09-03 11:30 -0700
Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-03 13:18 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-03 14:57 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-03 16:01 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-04 12:46 -0700
Re: Red, Blue and Green Ergios <invalid@invalid.com> - 2016-09-07 12:32 -0500
Re: Red, Blue and Green noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-08 12:12 -0700
Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-07 23:22 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-03 16:03 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-03 16:06 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-20 00:18 -0700
Re: Red, Blue and Green noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-20 12:52 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-07 10:01 -0700
Re: Red, Blue and Green Gutless Umbrella Carrying Sissy <taustinca@gmail.com> - 2016-09-07 10:12 -0700
Re: Red, Blue and Green The Starmaker <starmaker@ix.netcom.com> - 2016-09-20 09:47 -0700
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-08-31 14:32 -0700
Re: Viewing the spokes "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-09-04 11:39 -0700
Re: Viewing the spokes "hanson" <hanson@quick.net> - 2016-09-04 20:36 -0700
Re: Viewing the spokes "nuny@bid.nes" <Alien8752@gmail.com> - 2016-09-09 09:08 -0700
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-09 12:32 -0700
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-09 17:51 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-10 00:10 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-09 20:43 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-10 00:57 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-09 21:07 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-10 01:33 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-12 20:59 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-13 02:41 +0000
Re: Viewing the spokes "nuny@bid.nes" <Alien8752@gmail.com> - 2016-09-09 19:43 -0700
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-12 21:29 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-13 02:43 +0000
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-13 13:28 -0700
Re: Viewing the spokes "nuny@bid.nes" <Alien8752@gmail.com> - 2016-09-13 17:14 -0700
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-13 21:52 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-14 05:11 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-15 17:49 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-16 00:50 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-15 21:52 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-16 04:11 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-16 16:58 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-16 21:40 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-16 20:56 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-17 01:47 +0000
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-17 17:24 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-18 00:07 +0000
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-14 14:26 -0700
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-14 15:04 -0700
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-16 12:54 -0700
Re: Viewing the spokes "nuny@bid.nes" <Alien8752@gmail.com> - 2016-09-14 19:47 -0700
Re: Viewing the spokes benj <nobody@gmail.com> - 2016-09-14 23:24 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-15 05:12 +0000
Re: Viewing the spokes "nuny@bid.nes" <Alien8752@gmail.com> - 2016-09-15 15:45 -0700
Re: Viewing the spokes benj <benj@nobody.net> - 2016-09-15 21:36 -0400
Re: Viewing the spokes jimp@specsol.spam.sux.com - 2016-09-16 02:58 +0000
Re: Viewing the spokes "nuny@bid.nes" <Alien8752@gmail.com> - 2016-09-18 12:15 -0700
Re: Viewing the spokes Wally W. <ww84wa@aim.com> - 2016-09-15 09:15 -0400
Re: Viewing the spokes "nuny@bid.nes" <Alien8752@gmail.com> - 2016-09-15 15:48 -0700
Re: Viewing the spokes noTthaTguY <abu.kuanysh05@gmail.com> - 2016-09-18 15:33 -0700
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