Athin uniform film of refractive index 1.750 is placed on a sheet of glass with a refractive index 1.50. at room temperature ( 22.2 ∘c), this film is just thick enough for light with a wavelength 583.5 nm reflected off the top of the film to be canceled by light reflected from the top of the glass. after the glass is placed in an oven and slowly heated to 174 ∘c, you find that the film cancels reflected light with a wavelength 587.5 nm .

Explanation:

In this way we understand that the condition for destructive interference is

The smallest non zero thickness is,

At

At

The coefficient of linear expansion is

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.