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Author Topic: Why Do We Squint When We Scrutinise ?  (Read 4011 times)

Offline neilep

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Why Do We Squint When We Scrutinise ?
« on: 12/06/2009 00:50:40 »
Dear Scrutinologists,

As a sheepy I of course need to scrutinise every ewe in detail before blessing her with the gift of my preggy making joyness !

It dawned on me whilst interviewing my latest candidate that I wonder why we squint our eyes when scrutinising ?

Look, here is what I mean !


Eyes quite happily not scrutinising:







Eyes in deep scrutinisation !




I have been pondering this for many a long time now.....five whole minutes since I thought about it and I figured I know a place that might be able to help me !..................The all night kebab shop just said "Ewe want chilli sauce with that boss ? !!...so..no luck there !

Then i thought my superduper klevur chums whom I admire with affection and awe here will know !

so, why do we squint when scrutinising ?..or concentrating ?..or reading small print ? etc etc


Hugs et les shmishes



mwah mwah mwah !


neil
I also Squint When Doing a Poo !
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Offline RD

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Why Do We Squint When We Scrutinise ?
« Reply #1 on: 12/06/2009 01:07:38 »
.


Quote
So the question is " how does squinting your eyes help them focus "

When you squint your eyelids partially cover your pupils reducing their size.
This is analogous to reducing the aperture on a camera lens which increases the depth of focus and depth of field.


Quote
The same factors that determine depth of field also determine depth of focus...
 Both depth of field and depth of focus increase with smaller apertures
http://en.wikipedia.org/wiki/Depth_of_focus
http://www.thenakedscientists.com/forum/index.php?topic=23264.msg254780#msg254780
« Last Edit: 12/06/2009 01:16:12 by RD »
 

Offline Chemistry4me

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Why Do We Squint When We Scrutinise ?
« Reply #2 on: 12/06/2009 08:57:06 »
why do we squint when scrutinising
Maybe ewe're saying to what ever ewe're scrutinising, argggh! I'll figure you out! Better start running.
 

Offline Don_1

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Why Do We Squint When We Scrutinise ?
« Reply #3 on: 12/06/2009 09:33:46 »
SPAMMY POST

Maybe you should have gone to Specsavers. http://www.youtube.com/watch?v=2Sbe73D9WnM
 

Offline neilep

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Why Do We Squint When We Scrutinise ?
« Reply #4 on: 12/06/2009 10:05:31 »
.


Quote
So the question is " how does squinting your eyes help them focus "

When you squint your eyelids partially cover your pupils reducing their size.
This is analogous to reducing the aperture on a camera lens which increases the depth of focus and depth of field.


Quote
The same factors that determine depth of field also determine depth of focus...
 Both depth of field and depth of focus increase with smaller apertures
http://en.wikipedia.org/wiki/Depth_of_focus
http://www.thenakedscientists.com/forum/index.php?topic=23264.msg254780#msg254780



Thanks RD.

ooops..seems I missed that similar question. At least it was not one that I had already asked !

cooo !!...so being blissfully unaware of the biology behind the nature of squinting, we do it as a matter of instinct ?...isn't our inbuilt knowledge and bodies capabilities klevur ?

This now leads me to ask another question ! (link to follow in a few mins) http://www.thenakedscientists.com/forum/index.php?topic=23592.new#new

« Last Edit: 12/06/2009 10:12:18 by neilep »
 

Offline neilep

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Why Do We Squint When We Scrutinise ?
« Reply #5 on: 12/06/2009 10:15:43 »
SPAMMY POST

Maybe you should have gone to Specsavers. http://www.youtube.com/watch?v=2Sbe73D9WnM

Hee hee !!


An observation though.....when ever we have a power cut...our phones still work !
 

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Why Do We Squint When We Scrutinise ?
« Reply #5 on: 12/06/2009 10:15:43 »

 

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