Light and the Electromagnetic Spectrum
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Transcript of Light and the Electromagnetic Spectrum
![Page 1: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/1.jpg)
Light and the
Electromagnetic Spectrum
![Page 2: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/2.jpg)
What Kind of Wave Is Light and What Vibrates to Make It?
• When an electric charge vibrates, the electric field around it changes, creating a changing magnetic field.
http://www.youtube.com/watch?feature=player_detailpage&v=hajIIGHPeuU
• When a magnet moves, the magnetic field around it changes, creating a changing electric field.
![Page 3: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/3.jpg)
• The magnetic and electric fields create each other again and again.
An EM wave travels in all directions.
So…. what kind of wave is light?
![Page 4: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/4.jpg)
What is Light Made of And How do We Know?
Two Theories1. Waves
2. Particles
Photons!!
![Page 5: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/5.jpg)
Double Slit Experiment – Thomas Young 1803
![Page 6: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/6.jpg)
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What Types of Light Are There?
The Electromagnetic Spectrum
![Page 8: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/8.jpg)
RedOrangeYellowGreenBlueIndigoViolet
ROY G BIV
How to Remember Order of Visible Light?
![Page 9: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/9.jpg)
What Does Light Have To Do With Astronomy?
Age? Composition?
![Page 10: Light and the Electromagnetic Spectrum](https://reader031.fdocuments.us/reader031/viewer/2022032708/56812a5e550346895d8dca40/html5/thumbnails/10.jpg)
• Neon
• Argon
• Helium