- #1
Woopy
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Hello, I am having some difficulties understanding this concept. It seems like wikipedia and my notes/teacher contradict each other
According to my equation sheet, the equation for dark spots is 2nt = mλ and for bright spots is 2nt = (m + 0.5)λ. However, if a phase shift of 180 degrees occurs because the light hits something with a higher index of refraction (n), then the equation for dark spots and bright spots changes. If two phase shifts occur, they remain the same as if no phase shifts occur
Now I read wikipedia, and it seems to be the exact opposite of what is on my formula sheet. Am I reading this wrong, or which source is wrong?! I don't get it
http://en.wikipedia.org/wiki/Thin-film_interference
look at the articles about Soap bubble and anti-reflection coatings
According to my equation sheet, the equation for dark spots is 2nt = mλ and for bright spots is 2nt = (m + 0.5)λ. However, if a phase shift of 180 degrees occurs because the light hits something with a higher index of refraction (n), then the equation for dark spots and bright spots changes. If two phase shifts occur, they remain the same as if no phase shifts occur
Now I read wikipedia, and it seems to be the exact opposite of what is on my formula sheet. Am I reading this wrong, or which source is wrong?! I don't get it
http://en.wikipedia.org/wiki/Thin-film_interference
look at the articles about Soap bubble and anti-reflection coatings