Chapter19a - Atmospheric Optics - I Recap Conde nsation...

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Atmospheric Optics - I
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Recap Condensation above the Earth surface produces clouds. Clouds are divided into 4 main groups: High Middle Low Clouds with vertical development Satellites give a bird’s eye view of clouds. Geostationary satellites Polar-orbiting satellites Infrared images can provide a three-dimensional view of the clouds: Height of the cloud Temperature of the cloud an astronaut’s
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Color The human eye is sensitive to the visible part of the electromagnetic spectrum ( λ =0.4-0.7 μ m): Intensity - light or dark; Wavelength – color. We see the objects because they emit and/or interact with light ( reflection , transmission , absorption , refraction , scattering , diffraction ) Perception of color: Each color corresponds to a particular wavelength. White: all wavelengths are present with equal intensity; Black: no light is emitted and/or reflected from the object. Color of emitted light and temperature: The sun appears white. Colder stars look redder ( λ max is longer than λ max of the sun). Hotter stars look bluer ( λ max is shorter than λ max of the sun).
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Scattering of light The scattering of light in the atmosphere depends on the size of the scattering particles,
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Chapter19a - Atmospheric Optics - I Recap Conde nsation...

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