01_31_Refraction - Today 1/31 o o o o o o No HW due Monday...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Today 1/31 o No HW due Monday o Diffraction grating 27.7 (quickly) o o Read Ch 26 Sec 1 - 3 o HW: Ch 26 P 13, 16 Due Wed 2-5 o Exam I Thursday, Feb 13
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Diffraction Grating o Sharper (narrower) bright spots than double slit o d sin θ = m λ for constructive interference (same as double slit) Gratings specified with “slits per centimeter” use this to find d.
Background image of page 2
Refraction-Bending Light o Light slows when entering transparent materials. o Results in a change in direction for light entering at an angle
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Refraction-Bending Light Water - index of refraction, n W = 1.33 Wave crests are closer together in higher index materials because the waves travel slower. Air - index of refraction, n A = 1.0 Think of rows in a marching band that slow down in a mud puddle.
Background image of page 4
Water - index of refraction, n W = 1.33 When light enters at an angle, it “bends.” Air - index of refraction, n A = 1.0 Think of rows in a marching band that slow down in mud puddle. Ray direction always
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/21/2010 for the course PHYS Physics 21 taught by Professor Larrywatson during the Spring '08 term at North Dakota.

Page1 / 14

01_31_Refraction - Today 1/31 o o o o o o No HW due Monday...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online