Complete annihilation of light through polarizers

[quietrain]

Hi,

when i am doing an experiment that uses two polarizers (Cross) to achieve complete annihilation of light,

why am i not able to see complete darkness when i look at the light source from the end of the polarizers, but rather the light source changes to a different color

for example, if i have a blue light source, i see it become dark blue, but never really black.

so is there a reason? theoretically i am suppose to kill 100% of the light right?

thanks!

 

[Antiphon]

The polarizers are imperfect.

 

[quietrain]

so its a fault on the experiment apparatus?

 

[jtbell]

Yes. Perfect polarizers are in the same category as frictionless surfaces.

You might suggest to the http://www.lhup.edu/~dsimanek/ideal/ideal.htm that they add perfect polarizers to their catalog.

 

[quietrain]

haha ok thanks!