When I am looking with my sunglasses to PC display I see darker

[agentas]

When I am looking with my sunglasses to PC display I see darker image.Then I turn my head 45 degrees and I do not see anything.Why?

 

[f95toli]

Because the light from the screen is polarized (I am assuming it is an LCD) , and you are using polarizing sunglasses.
Tilting your head is therefore analogous to crossed polarisers, it will block all light.

 

[agentas]

ok so my cheap sunglasses(6 euros) are polarized.
But then if I do the same with my wife glasses really expensive (200 euros)D§G i do not see any effect.Are they not polarized?

 

[davenn]

ok so my cheap sunglasses(6 euros) are polarized.
But then if I do the same with my wife glasses really expensive (200 euros)D§G i do not see any effect.Are they not polarized?

possibly not

D

 

[Fun Value]

Wouldn't it make a difference if you tilt your head up or down 45 degrees instead of left or right 45 degrees?