Saturday, February 9, 2013 @ Santa Monica College Materials Chija's stuff All of Chija's powerpoint slides, handouts, and links she shared with you today can be found on our NPTW Edmodo site.  Our Edmodo page can be found at: http://www.edmodo.com/home#/join/d591df2113c018c291671d7067b19834 If you are already an Edmodo user, you can join our group with the code: xo6btt James' stuff Here is the list of videos by James on Waves & Light Waves General: Standing Waves:  http://www.youtube.com/watch?v=j_z88-vvz48 (Light) Wave Diffraction:  http://www.youtube.com/watch?v=kH57Di7Sj0c Standing Waves, Result from Interference: http://www.youtube.com/watch?v=xXvAsiovt5A Sound Beats:  http://www.youtube.com/watch?v=-lA1jYhs_Xw Sound in a Vacuum:  http://www.youtube.com/watch?v=HYcnjPrRUs8 Measure the Wavelength of Sound: http://www.youtube.com/watch?v=B7cVrauDzBQ General Properties of Sound: http://www.youtube.com/watch?v=wG0y18KG__I Musical Instruments:  http://www.youtube.com/watch?v=7bFl_5MnJe0 Speed of Sound Depends on the Medium: http://www.youtube.com/watch?v=xYCkg1FvpNE Light Light, an Electromagnetic Wave: http://www.youtube.com/watch?v=CEhBc48IScU X-Ray Diffraction & Rosalind Franklin: http://www.youtube.com/watch?v=u7RrXAjuNRk Light & Polarization: http://www.youtube.com/watch?v=E9qpbt0v5Hw Measure the Speed of Light: http://www.youtube.com/watch?v=8kQdJ-XJt98 How to Measure the Wavelength of Laser Light: http://www.youtube.com/watch?v=E-3uht9LAhM Snell’s Law: http://www.youtube.com/watch?v=Ves0l2CQLg4 Diffraction Lab Question:  http://www.youtube.com/watch?v=duIxfGcFHic Best Video on Lasers:  http://www.youtube.com/watch?v=hhthN6m48Vw Why is the Sky Blue?:  www.youtube.com/watch?v=gUgDtWANJ18 Mixing Colors of Paint & Light:  http://www.youtube.com/watch?v=Er7CM_RNFZ4 Can Dogs See in Color?:  www.youtube.com/watch?v=QVjeeJrE4Q0 Lenses and the Human Eye:  www.youtube.com/watch?v=xPrJkJxbfTA Circular Polarization:   www.youtube.com/watch?v=ycY2mUZHS84 (Light) Wave Diffraction:  http://www.youtube.com/watch?v=kH57Di7Sj0c James' Website: www.PhysicsVideos.net Oscilloscope directions: Page1 (PDF), Page2 (PDF) Bill's stuff Bill's Website on Teaching the Standards: http://www.physics.ucla.edu/HighSchoolPhysics/ Frank's stuff Waves and wave equation Ban the word “wave” until we've clearly defined it. Until then, describe what happens physically Gummy bear wave machine Alternative - PhET wave simulator (http://phet.colorado.edu/en/simulation/wave-on-a-string) How to make one: https://www.youtube.com/watch?v=RCbf9_4xN_E How to use it: https://www.youtube.com/watch?v=FjPFW6gftas You can show... Medium is not transferredelocity does not change by varying vibration, must change medium Velocity is generally slower than a slinky, so easier to show interference Wave tank simulator http://www.falstad.com/ripple/ You can download it Just a few of the things you can demonstrate: Doppler effect, Reflection/echo, Interference Wave equation I write it lambda=v/f to emphasize that velocity and wavelength are directly proportional, frequency and wavelength are inversely proportional Directions for waves on paper activity Sound Ruler "boing" activity for relating pitch to frequency Signal generator for Windows: http://www.dr-jordan-design.de/Download/SigGen.zip Resonance Resonance tuning forks (raffled by Cenco), used in James' beats demo and resonance demo -http://www.cencophysics.com/resonance-tuning-forks-pair/p/IG0044505/ (Cenco item #WLS1802-47) Light and EM waves Visible light, perception of light Vsauce, "This is not yellow": http://www.youtube.com/watch?v=R3unPcJDbCc Multi-color LED finger flashlights are available at some dollar stores or cheapie toy stores (try Chinatown) for less than $2 per set, or you can get a pack of 10 on Amazon: http://www.amazon.com/gp/product/B0018LAGZY/ Retina burnout optical illusions Flag optical illusion (Word doc) Castle optical illusion (Word doc) Near-infrared webcam To view the camera on Mac, you can use Photo Booth or iMovie. To view the camera on Windows, you can use Yawcamhttp://www.yawcam.com/download.php Informative video about IR radiation and IR cameras: http://www.flir.com/cs/emea/en/view/?id=43727 For ideas of what to do with it http://www.instructables.com/id/Near-Infrared-Camera-for-Less-than-10-and-10-mi/step5/Test-it-out/ I got these ideas from Dan Burns, a fantastic resource. See "Using webcams for IR radiation detection" on the right, near the bottom of the list: http://www.lghs.net/apps/classes/show_class.jsp?classREC_ID=398988 Troubleshooting To change the focus, rotate the front lens. If it just seems to be spinning in place, you can just pull off that black front cover piece and twist the inner lens assembly directly.  Directions for making your own: http://www.instructables.com/id/Near-Infrared-Camera-for-Less-than-10-and-10-mi/ Frank's sound and waves class handouts from last school year can be found here: http://betterlesson.com/my/unit/42747/waves-sound Light and EM spectrum class handouts are here: http://betterlesson.com/my/unit/98473/light-11-12 They weren't created with other teachers in mind, so they might not make sense to anyone else. All of Frank's bookmarks that he tags as "physics" are here: https://delicious.com/menk/physics