The lift is the pairt o the atmosphere or o ooter space veesible frae the surface o ony astronomical object. It is haurd tae define preceese for mony a raison. Durin daylicht, the lift o the Yird haes the cast o a deep blue surface acause o the air's spairgin o sunlicht. The lift is whiles defined as the denser gaseous pairts o a planet's atmosphere. At nicht the lift haes the cast o a black surface or region spelfert wi starns.
Durin the day the Sun micht can be seen in the lift, unless kivert by cloods. In the nicht lift (an tae some extent durin the day) the muin, planets an starns are veesible in the lift. Some o the natural phenomena seen in the lift are cloods, rainbows, an aurorae. Lichtnin an rain micht can be seen in the lift durin storms an aw. On the Yird, birds, insects, aircraft, an kites are aften conseedert tae flee in the lift. As a result o bodies' activities, smog durin the day an the licht radiance durin the nicht are aften seen abuin lairge ceeties (see licht pollution forby).
- Tyndall, John (December 1868). "On the Blue Colour of the Sky, the Polarization of Skylight, and on the Polarization of Light by Cloudy Matter Generally". Proceedings of the Royal Society of London 17: pp. 223–233. doi:10.1098/rspl.1868.0033.
- Rayleigh, Lord (June 1871). "On the scattering of light by small particles". Philosophical Magazine. 41, 275: pp. 447–451.
- Watson, JG (June 2002). "Visibility: Science and Regulation". J. Air & Waste Manage. Assoc 52: pp. 628–713. Retrieved 2007-04-19.
- Why is the sky Blue?
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