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Light and the Electromagnetic Spectrum
Light is a form of electromagnetic radiation that travels in waves made up of electric and magnetic fields. The electromagnetic spectrum includes both visible light and invisible forms of energy across a range of wavelengths. The wavelength of light determines whether it is visible to the human eye or not, with different wavelengths appearing to us as different colors. Objects are visible because they reflect light, with smooth surfaces reflecting light specularly and rough surfaces reflecting it diffusely.
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This slide introduces the overarching theme of light within the context of the electromagnetic spectrum.
Light is described as a wave, emanating energy from electromagnetic radiation, encompassing visible and invisible wavelengths.
Key properties of light waves, including wavelength and amplitude, are highlighted as essential to understanding the electromagnetic spectrum.
Explores the link between wavelength and color perception, emphasizing how different wavelengths correspond to different colors.
Describes the mechanics of light transmission through various mediums: transparent, translucent, and opaque.
Discusses how light reflection is fundamental to visibility; explores smooth versus rough surfaces and their effects on light.
Light and the Electromagnetic Spectrum
- 1. Light and theElectromagnetic Spectrum
- 2. Light as aWavelight is a visible form of energymost of the energy that surrounds us is invisiblethis energy travels in waves made of electric and magnetic fieldscalled “Electromagnetic Radiation”
- 3. Light as aWaveElectromagnetic Spectrum = the entire range of visible and invisible energy waves
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- 5. Wavelengths of theElectro-Magnetic Spectrum
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- 9. How Light isTransmitted
- 10. Transparent:allows light topass throughTranslucent:allows some light to pass throughOpaque:allows no light to pass through
- 11. Light ReflectionThe reasonwe see objects is because they reflect lightSmooth Surface
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