Jan 21, 2009: Digital Weird - Page 2

Agent-G · 01-21-2009, 06:31 PM

no, I have never tried this with my iphone, but I think I might try it now.

Elspode · 01-21-2009, 09:53 PM

I'll see what I can do with my iPhone. Looks like a noble cause.

barefoot serpent · 01-22-2009, 12:17 PM

lots more examples here and discussions of photon gating and Nyquist frequencies etc.

spudcon · 01-22-2009, 03:45 PM

Moving objects in the same speed/direction as the scanner on a copy machine makes the object look longer. :-)

HungLikeJesus · 01-22-2009, 06:17 PM

I agree. If the shutter is moving left to right, the propeller has to be spinning clockwise (from our POV). Because you can see the root of the propeller in the top but not the bottom, the smallest relative velocity between the shutter and propeller must occur there - so they're moving in the same direction at the top and the opposite direction at the bottom.

Elspode · 01-22-2009, 06:29 PM

But...if the plane was on a treadmill, and the iPhone was trying to take off, would the propeller blades appear at all?

Griff · 01-22-2009, 07:06 PM

Depends. Is the treadmill on a train approaching the speed of light?

SPUCK · 01-23-2009, 03:19 AM

No! But the train did leave the station going west.

lumberjim · 10-03-2009, 09:00 PM

Anon E Mouse would have worked better

eta.....unless your 1st language es Espanol

01-21-2009, 09:53 PM	#2
Elspode When Do I Get Virtual Unreality? Join Date: Dec 2002 Location: Raytown, Missouri Posts: 12,719	I'll see what I can do with my iPhone. Looks like a noble cause. __________________ "To those of you who are wearing ties, I think my dad would appreciate it if you took them off." - Robert Moog

01-22-2009, 12:17 PM	#3
barefoot serpent go ahead, abbrev. it Join Date: Jun 2005 Location: Lawrence, KS Posts: 2,623	lots more examples here and discussions of photon gating and Nyquist frequencies etc. __________________ Chooses rowing vs. wading

01-22-2009, 03:45 PM	#4
spudcon Beware of potatoes Join Date: May 2007 Location: Upstate NY, USA Posts: 2,078	Moving objects in the same speed/direction as the scanner on a copy machine makes the object look longer. :-) __________________ "I believe that being despised by the despicable is as good as being admired by the admirable."

01-22-2009, 06:17 PM	#5
HungLikeJesus Only looks like a disaster tourist Join Date: Feb 2007 Location: above 7,000 feet Posts: 7,208	I agree. If the shutter is moving left to right, the propeller has to be spinning clockwise (from our POV). Because you can see the root of the propeller in the top but not the bottom, the smallest relative velocity between the shutter and propeller must occur there - so they're moving in the same direction at the top and the opposite direction at the bottom. __________________ Keep Your Bodies Off My Lawn SteveDallas's Random Thread Picker.

01-22-2009, 06:29 PM	#6
Elspode When Do I Get Virtual Unreality? Join Date: Dec 2002 Location: Raytown, Missouri Posts: 12,719	But...if the plane was on a treadmill, and the iPhone was trying to take off, would the propeller blades appear at all? __________________ "To those of you who are wearing ties, I think my dad would appreciate it if you took them off." - Robert Moog

01-21-2009, 06:31 PM	#1
Agent-G Candy is dandy, but liquor is quicker Join Date: Apr 2008 Location: Lake Tahoe, California Posts: 103	no, I have never tried this with my iphone, but I think I might try it now.

01-22-2009, 07:06 PM	#7
Griff still says videotape Join Date: Feb 2001 Posts: 26,813	Depends. Is the treadmill on a train approaching the speed of light? __________________ If you would only recognize that life is hard, things would be so much easier for you. - Louis D. Brandeis

01-23-2009, 03:19 AM	#8
SPUCK Professor Join Date: Oct 2006 Posts: 1,911	No! But the train did leave the station going west.

10-03-2009, 09:00 PM	#9
lumberjim I can hear my ears Join Date: Oct 2003 Posts: 25,571	Anon E Mouse would have worked better eta.....unless your 1st language es Espanol __________________ This body holding me reminds me of my own mortality Embrace this moment, remember We are eternal, all this pain is an illusion ~MJKeenan

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