AP 2: Optics

AP Physics 2: Optics 1: Electromagnetic Wave Spectrum: 

AP Physics 2: Optics 2: Ray Model, Geometric Optics,and Specular & Diffuse Reflection

• Laws of reflection https://www.youtube.com/watch?v=9aWE4rDw_ks

AP Physics 2: Optics 3: Plane Mirror Image and Depth Perception

AP Physics 2: Optics 4: Index of Refraction and Law of Refraction - Snell’s Law

• • Index of Refraction: Disappearing Glass and Disappearing Gel, 2010 https://www.youtube.com/watch?v=qH1S83Bkttw  

  • The vegetable oil (with a little bit of baby oil) has the same index of refraction as Pyrex glass (n = 1.4744), so light can go from oil to Pyrex glass and from Pyrex glass to oil without the kind of bending normally caused by refraction. That’s why Pyrex glass can “disappear” in the oil.

  • The “Jello” trick is kind of like the effect we would get when we wet frosted glass. Flat smooth glass is clear and see-through. Frosted glass has an uneven surface causing light to bend in all kinds of directions and therefore hard for us to see what’s on the other side of the glass. When frosted glass gets wet, its surface gets smooth, therefore allowing us to see the other side. Because water does not have the same index of refraction as glass, so the effect is not as clear as the demo in this video. The “Jello” in this demo video has the same index of refraction as water, so the “Jello” can “disappear” in water.

AP Physics 2: Optics 5: Dispersion Prism and Rainbow