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Electromagnetic Waves

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Presentation on theme: "Electromagnetic Waves"— Presentation transcript:

1 Electromagnetic Waves

2 Light and Matter Emission: light produced by matter
Absorption: portion of light incident on matter that is absorbed Transmission: portion of light that travels through medium Reflection: light that bounces (reflects) at an angle equal to its incident angle

3 Electromagnetic Spectrum
c = 300,000 km/s l ´ f = c

4 Spectrum from a Prism

5 Example of Spectrum

6 Types of Spectra in the Lab

7 Photons of Light The smallest unit of light is a photon
A photon is often called a particle of light The Energy of an individual photon depends on its wavelength (frequency) The Energy of a photon is proportional to its frequency: E = h f = hc / l

8 Electromagnetic Spectrum

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