Physics project...

[Nineshadow]

So,we've got to determine the index of refraction of glass.

 

In the class we were given a plane parallel glass plate and we had to do different drawings(10) showing how the light passes through it.Then, by calculating the angles, we can find out the index of refraction( obvious).

 

This is what I've got :

i = angle of incidence

r = angle of refraction

n^- = median index of refraction

 

 

 

This was done through calculus.Now we have to find the index of refraction through a graph : sin r = f(sin i).

@tomlambert01 n = gradient

 

Oh and is there any formula for the deviation suffered from light at the refraction through a parallel glass pane ? I have to determine the index of refraction from that too.I figured it out as being : sin(i-r) * d / (cosin r) , where d is the width of the glass pane(which I know)

 

[xox]

Sometimes, I think this document would help you in most of your posts:

 

http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCYQFjAA&url=http%3A%2F%2Ffilestore.aqa.org.uk%2Fsubjects%2FAQA-PHYA4-5-INS-JUN12.PDF&ei=kzNNVMHGBKyu7AbMmoGQCA&usg=AFQjCNFvC10jJLV-tZBYcA1oEtXFHpu54w&sig2=LhZT1bemAit2VwuB5SjXEw&bvm=bv.77880786,d.ZGU

 

(downloads a PDF) Look at the "waves" section in the equation sheet.

[Nineshadow]

Sometimes, I think this document would help you in most of your posts:

 

http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCYQFjAA&url=http%3A%2F%2Ffilestore.aqa.org.uk%2Fsubjects%2FAQA-PHYA4-5-INS-JUN12.PDF&ei=kzNNVMHGBKyu7AbMmoGQCA&usg=AFQjCNFvC10jJLV-tZBYcA1oEtXFHpu54w&sig2=LhZT1bemAit2VwuB5SjXEw&bvm=bv.77880786,d.ZGU

 

(downloads a PDF) Look at the "waves" section in the equation sheet.

Yeah, I know those.That's not the problem.

 

My problem right now is how do I get a function to go through all those 10 points :

Eg. A1 = (sin i1, sin r2)

 

And how can I find out the index of refraction from that graph?

Something like this : http://sciencesphysiques-cotemaison.wifeo.com/documents/Refraction_21p231.pdf (is in french)

[xox]

Yeah, I know those.That's not the problem.

 

My problem right now is how do I get a function to go through all those 10 points :

Eg. A1 = (sin i1, sin r2)

 

And how can I find out the index of refraction from that graph?

Something like this : http://sciencesphysiques-cotemaison.wifeo.com/documents/Refraction_21p231.pdf (is in french)

Read off the applicable values from the graph, use n=(sini)/(sinr) and capish

 

In this case, because gradient=rise/run, n=gradient

[Nineshadow]

Read off the applicable values from the graph, use n=(sini)/(sinr) and capish

 

In this case, because gradient=rise/run, n=gradient

Oh...right!

That's what I was missing.

Thanks.