Density

Layers in the atmosphere

Light and air make for strange mixtures sometimes, with a great variety of beautiful optical effects produced in consequence. The reddened colour of this sunset is due to the greater amount of air that the light has to pass through to reach the ground at the grazing angle of dusk, as opposed to the right angle of noontime. Particles of dust and aerosols absorb, diffract and scatter most of the higher energy green to blue wavelengths, while the lower powered red to orange hues pass through while the shorter light paths of midday scatter all wavelengths but blue.

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¿Qué pesa más, 100 gramos de tal o 100 gramos de cual?

Parece la típica chorrada trivial, pero vamos que ver que no tanto :)

Watch on the-earth-story.com

This is an absolutely unbelievable demonstration of the behavior of different layers in Earth’s atmosphere. Look how the distant clouds move so different from the near clouds.