Polaroid sheets and the law of malus

[cuddlylover]

Unpolarised light passes through two Polaroid sheets. The axis of the rst is horizontal, and
that of the second is 50 above the?

Do i have this right. I am using law of malus I=I₀ cos²θ

Im getting 47% but i don't know if that's right. If someone could help that would be awesome thanks.

 

[tiny-tim]

hi cuddlylover!

Unpolarised light passes through two Polaroid sheets. The axis of the rst is horizontal, and that of the second is 50 above the?

how did you get 47% ?

 

[cuddlylover]

(cos(50)^2)/2

Is that not right?

 

[tiny-tim]

he he

press the "degrees" button! ​

 

[cuddlylover]

28%?

 

[tiny-tim]

now you've completely lost me

how did you get 28% ? ​

 

[cuddlylover]

Me to lol i get the feeling that was not my degrees button i just hit :)