01_27_Reflections_Films

01_27_Reflections_Films - Today 1/27 o HW: 1/27 Handout...

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Today 1/27 o HW: 1/27 Handout “Anti-Reflection Coating” due Thursday 1/30 o Today: Reflections at Boundaries 27.3 o Thin Film Interference 27.3 o Labs start Today o Peer Guidance Center still need Monday afternoon covered
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Next Week’s Lab: Microwaves o A wave in the “electric field” o Reflection and transmission from and through wood o Reflection from metal (why metal is bad in your microwave) o Polarization (see section 24.6) o Interference (Young’s Double Slit)
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Light to Heavy Both transmission and reflection Boundary feels like a fixed end to the light string Reflection just like fixed end, inverted Transmitted wavelength has the same shape except it’s shorter in length because it travels slower than the incoming wave. Slower, so not as far from boundary Shorter, “bunched up” Inverted wave
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Heavy to Light Both transmission and reflection Boundary feels like a free end to the heavy string Reflection just like free end, not inverted Faster, farther from boundary Longer, “spread out”
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01_27_Reflections_Films - Today 1/27 o HW: 1/27 Handout...

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