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Understanding Light: Electromagnetic Waves, Photons, and Energy Levels

This article explores the fundamentals of light as electromagnetic waves traveling through a vacuum. It defines photons and their role in energy absorption by electrons, which become "excited" and unstable. When these electrons return to their original state, they release photons. We delve into the properties of light, including wavelength, frequency, and the speed of light (c = 300 million m/s). Various types of light and their behavior in different mediums—gases, liquids, and solids—are also examined, providing a comprehensive overview of how light functions in our world.

veronica-whitehead
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Understanding Light: Electromagnetic Waves, Photons, and Energy Levels

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Presentation Transcript

  1. LIGHT

  2. Electromagnetic Waves • Vacuum • Force fields Photons • Definition • Electrons • Energy levels • Electrons • absorb energy

  3. Photons (cont.) • “Excited & unstable” • Photons released when • electrons return • Photon energy • 1. Energy level • jump • 2. Types of • light

  4. Properties of Light • Transverse wave/photons • Wavelength • Frequency/energy • Speed of light • 1. c = 300 million m/s • 2. Medium • 3. Types of light • 4. Calculation of • speed of light??? vacuum gases liquids solids

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