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Anonymous
Alright you physics lovers...

I need your help.
I'm doing some personal research regarding lenses and curvatures.

Does anyone know of a mathematical formula I can derive to achieve the point of inflection as light passes through a lens just before the inverts?

What do I look for in lens size and depth of curvature?

any suggestions?

pic somewhat related.
>> Anonymous
try researching on google
>> Anonymous
dk;dc
>> Anonymous
OP here.
Sad. Very sad. This is a photography forum, I would have thought that the people here would know SOMETHING about lenses, apparently not.

Nobody knows anything about curvatures, distances for focal points, nothing.

Very sad.

You know what, Yeah, I'll find out myself because asking here is like asking a deaf man if they heard black sabbath.

Cheers, learn some math people.
It's not that hard.
>> Anonymous
>>168241
>It's not that hard.

Anything can be hard if you're not interested in it at all.

>a deaf man if they heard black sabbath.

What about a deaf man who's went deaf because he listened to Black Sabbath too loud?
>> Anonymous
Soup OP

there's some equation I learned in calc 1 dealing with reflection/refraction of a lens. If you happen to have a calc book around youlook it up. IT should be in your physics book too near the optics/wave section (duh.)
>> Anonymous
>>168226
fuck you faggot.

http://www.cambridgeincolour.com/tutorials.htm
google sucks, this is the best I've found.
Post anything if you find it, OP
>> Anonymous
>>168241
no, its more like asking a doctor if he knows the equations behind the waves used in an MRI machine. he doesnt need to know that to do what he does. we dont need to know the physics behind lenses to do photography. i actually learned it a few years back, but i dont really care enough to look it up for you when you are on the internet already.
>> Anonymous
>>168247
well then you're doing it wrong
I'd try it myself but I have no idea what I'm looking for so I can't say if I've found it.
>> Anonymous
For a thin lens

1/(distance to object) + 1/(distance to image) = 1/focal length

Works for thin lenses ignoring refractive index. For converging lenses f is positive, for diverging lenses, f is negative. Also, magnification factor can be found as

M = -(distance to image/distance to object)
>> Anonymous
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>>168272
>> Anonymous
     File :-(, x)
>>168283

Minor in physics ftw.
>> Anonymous
>>168241
I'm not deaf! Who's Black Sabbath?

"couldyouhelpmewithmywoman"...
>> Anonymous
>>168241
No need to get all "paranoid". We really are out to get you.
>> Anonymous
>>168241

Fuck you OP this can be found in any elementary physics book you're the lazt one you turd.
>> Anonymous
>>168362
Oh yeah, really, why does it involve advanced algebra and calculus dumb shit.
fucking DUMB shit!

You don't even know what YOU'RE talking about so go fuck yourself with a hot soldering iron.
>> Anonymous
>>168374
no, an elementary physics book will have this in it. it can be done without integrals, which is one of the first things you will learn from calculus. the first physics class i took was in high school and even that had lens equations in it including calculations to include diffractive indexes and the like. it was a non-calculus physics class because not everyone who took that physics took calculus before it.
>> Anonymous
>>168374
Foul! There are better and more creative uses for a soldering iron.

I suggest you cool your jets and adopt a slightly more mature attitude. Like that of a sixth-grader and not a kinder gardener.
>> Anonymous
>>168389
>4chan
>attitude of sixth-grader

That is asking far too much.
>> Anonymous
>>168396
Anonymous stands corrected. Anonymous will accept the attitude of:

A HERRING!

NI! NI! NI!

For what times are these when passers-by say "NI" to an old woman...
>> Anonymous
>>168219
troll is successful
>> Anonymous
>>168376
wut?
>> Anonymous
>>168407
It took this many posters to figure it out. That's 3/10 for troll and 4/10 for style.
>> Anonymous
i do physics,
you have to know the curve of the mirror and its refractive index, which is dependent on what type of glass it is. thats all.