Why do polarizers only work within a certain range?

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Polarizers have specific wavelength ranges where they are effective, with a minimum wavelength (λ_min) and a maximum wavelength (λ_max). The discussion highlights the need for clarification on these concepts, particularly regarding the types of polarizers being referenced, such as sunglasses, camera filters, or scientific instruments. One participant notes that their camera polarizer functions well across the full visible spectrum, suggesting variability in performance based on the polarizer type. The conversation emphasizes the importance of understanding the specific applications and limitations of different polarizers. Overall, the effectiveness of polarizers is influenced by their design and intended use.
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i understand why λ_min exists but why λ_max?
 
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hi there

I think you are going to have to elaborate a bit more

particularly where you got an idea of minimum and maximum wavelengths
references ??

what sort of polarisers ? sun glasses type ?, camera type?, scientific use ones ?

The polariser I use on my camera works well across the full visible spectrum
maybe further each way, I have no idea

Dave
 

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