Recent content by physgrl

makes sense! Thanks! :)

n=1.65 so its basically critical=sin-1(n-to/n-from) right? cause the critical is like angle-from and the 90o is the angle-to

so then it should be: βc-in-water=sin-1(sin(37.3)*1.33) so n2 is the material from which it comes from if β2 is the critical angle and in this case i comes from the water/air to the mysterious medium right? i think i was confusing which medium was 1 and which was 2 in my mind

n1=n2*sinβc-in-air n1=1/sin(37.3) βc-in-water=sin-1(n2/n1) βc-in-water=sin-1(1/sin(37.3)*1.33) βc-in-water=error

i get an error :/

ohh so n2 is really n1 basically

Homework Statement 11. The critical angle of a piece of transparent material in air is 37.30. What is the critical angle of the same material when it is immersed in water? (n = 1.33) a. 41.40 b. 48.40 *c. 53.70 d. 63.00 e. 68.20 Homework Equations βc=sin-1(n2/n1) The...

ok but why do diffraction gratings separate the colors?

thanks! :)

no that's not what i meant...im saying the constructive and destructive interferences will happen in the same relative locations all colors :)

it should not depend on the wavelength right because its always going to be 1/2 a wavelength out of phase. ohhh only if its white it will be a black and white pattern so the color/colors of the light will change the pattern right?

but why does it happen? i understand the bright and dark fringes due to constructive and destructive interference but i don't get how we achieve the colors through that process

Homework Statement When light is shined on thin films the interference pattern results in: a. there is no interference pattern *b. rainbow like colors c. light and dark pattern with no separation of colors d. a mirror quality reflection e. polarization of the light The...

Homework Statement 1. Light can be separated into its component colors by: a. diffraction gratings b. thin film interference c. focusing a broad beam of light into a point d. bends light as it passes the edge of an object *e. both a and b The Attempt at a Solution I...

Homework Statement 1. A soap bubble is colored because of: a. dispersion b. diffraction c. thin film interference d. all of the above Homework Equations The Attempt at a Solution I don't understand the concepts very well...at first I though the answer was dispersion...