Sweat on Screen, Interference or Refraction?

[Biniamin Piash]

When we touch the screen of a mobile or laptop we can see some colors on the sweat adhered to the screen.Which property of light can explain it? Is it for interference or for refraction?

 

[Comeback City]

I would think it would be the screen light refracting in addition to the outside light reflecting. Anyone else?

 

[pixel]

If there's a thin film on the screen, then it's interference.

 

[A.T.]

Is it for interference or for refraction?

Colors you see when the display is off are reflection and interference at a thin film. Colors you see with display on are refraction at droplets enlarging sub pixels.

 

[Biniamin Piash]

Colors you see when the display is off are reflection and interference at a thin film. Colors you see with display on are refraction at droplets enlarging sub pixels.

Can you tell it in more details?

 

[A.T.]

Can you tell it in more details?

https://en.wikipedia.org/wiki/Thin-film_interference
https://www.reddit.com/r/explainlik...5_why_it_looks_like_a_rainbow_of_colors_when/