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Post Options Post Options   Thanks (0) Thanks(0)   Quote BARREL BREAK Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:35am
Explain how a modern autofocus drive determines the correct distance to focus in a camera.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pntbl freak Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:36am
What is the tolerance in inches for a class X 1.510 in. fixed functional gage?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Enos Shenk Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:41am
Originally posted by WGP guy2 WGP guy2 wrote:

What is the primary way to affect the speed of an aircraft?  (as in what mainly controls the speed)


Well, the only things that can affect speed are the propulsion force, the drag, and the force of gravity.

The easiest to alter would be gravity. Drop the angle of attack, and gravity is on your side, increasing the speed. Put it in a dive and go REALLY fast!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Enos Shenk Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:43am
Originally posted by BARREL BREAK BARREL BREAK wrote:

Explain how a modern autofocus drive determines the correct distance to focus in a camera.


A variant of sonar. The camera issues an ultrasonic sound, and measures the time for the sound to bounce off whatever you happen to be aiming at. Some fancy math later, and the camera knows the distance to the target, more fancy math to determine the focal point.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote __sneaky__ Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:44am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Enos Shenk Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:47am
Originally posted by *Stealth* *Stealth* wrote:

How exactly does a camera lens shutter operate, and what is its' main functions?


Well, camera shutters come in a few different flavors, unless Im mistaken. You could have a diaphragm type shutter in the lens assembly, or blinds in the film compartment.

The purpose is the same though, to only allow light to strike the film for the perfect period of time, otherwise youd get a really crappy picture.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BARREL BREAK Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:52am
Originally posted by *Stealth* *Stealth* wrote:


How exactly does a camera lens shutter operate, and what is its' main functions?
Bad question. :P
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Post Options Post Options   Thanks (0) Thanks(0)   Quote *Stealth* Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:52am
Originally posted by Enos Shenk Enos Shenk wrote:

Originally posted by BARREL BREAK BARREL BREAK wrote:

Explain how a modern autofocus drive determines the correct distance to focus in a camera.


A variant of sonar. The camera issues an ultrasonic sound, and measures the time for the sound to bounce off whatever you happen to be aiming at. Some fancy math later, and the camera knows the distance to the target, more fancy math to determine the focal point.




hmmmmm


... That's not how my canon works.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BARREL BREAK Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:55am
Originally posted by Enos Shenk Enos Shenk wrote:


Originally posted by BARREL BREAK BARREL BREAK wrote:

Explain how a modern autofocus drive determines the correct distance to focus in a camera.
A variant of sonar. The camera issues an ultrasonic sound, and measures the time for the sound to bounce off whatever you happen to be aiming at. Some fancy math later, and the camera knows the distance to the target, more fancy math to determine the focal point.
That's ONE way.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote __sneaky__ Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:56am
Originally posted by BARREL BREAK BARREL BREAK wrote:

Originally posted by Enos Shenk Enos Shenk wrote:


Originally posted by BARREL BREAK BARREL BREAK wrote:

Explain how a modern autofocus drive determines the correct distance to focus in a camera.
A variant of sonar. The camera issues an ultrasonic sound, and measures the time for the sound to bounce off whatever you happen to be aiming at. Some fancy math later, and the camera knows the distance to the target, more fancy math to determine the focal point.
That's ONE way.
but in shenk's defence you never said "ALL" they ways.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BARREL BREAK Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 12:57am
Originally posted by __sneaky__ __sneaky__ wrote:

Originally posted by BARREL BREAK BARREL BREAK wrote:

Originally posted by Enos Shenk Enos Shenk wrote:

Originally posted by BARREL BREAK BARREL BREAK wrote:

Explain how a modern autofocus drive determines the correct distance to focus in a camera.
A variant of sonar. The camera issues an ultrasonic sound, and measures the time for the sound to bounce off whatever you happen to be aiming at. Some fancy math later, and the camera knows the distance to the target, more fancy math to determine the focal point.
That's ONE way.
but in shenk's defence you never said "ALL" they ways.
Very true, however, I did say modern, and the other method is more prevalent in top end cameras.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Enos Shenk Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 1:02am
Originally posted by pntbl freak pntbl freak wrote:

What is the tolerance in inches for a class X 1.510 in. fixed functional gage?


A diameter 1.51 cylindrical gage, class X, has a tolerance of .00006
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Evil Elvis Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 1:09am
with how many aliens did Captain Kirk Scored in the original Star Trek?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote *Stealth* Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 1:12am
Describe the means by which professional camera flash units calculate the distance at which their intended target is, as well as how they focus the beam in order to achieve the desired light. Also, on the subject of lights, and a likely situation - What is the common means by which the master strobe communicates when to fire to the Slave strobe?


I dare you to accurately answer that question, Mechanical man.


Edited by *Stealth* - 14 July 2007 at 1:14am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 636andy636. Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 1:16am
Why?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Project Irene Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 1:17am
I'd go crazy with center of gravity (by integration), moment of inertia, modulus of elasticity, computational fluid dynamics,  lift coeffecient/drag profiles, thermodyn, orbital mechanics,  and a plethora of stress, torsion, strain, and yielding questions in general if only I had the will to type them.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mehs Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 2:11am
Explain the workings of a boiler.
[IMG]http://i27.tinypic.com/1538fbc.jpg">
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Post Options Post Options   Thanks (0) Thanks(0)   Quote karll Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 2:14am
Originally posted by cdacda13 cdacda13 wrote:

2+2= ?


22
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Da Hui Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 2:16am
All motor vs. turbo
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bishopisback Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2007 at 2:48am
You say you're allowed to asked friends of yours? How do we know they wont use google?
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