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apparent dome over the earth, background of the clouds, sun, moon, and stars. The blue color of the clear daytime sky results from the selective scattering of light rays by the minute particles of dust and vapor in the earth's atmosphereatmosphere
[Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other planets and satellites are known, only the earth's atmosphere has been well studied, the science of
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. The rays with longer wavelengths (the reds and yellows) pass through most readily, whereas the shorter rays (the blues) are scattered. An excess of dust, especially in large particles, causes scattering of many rays besides the blue, and the sky "fades" and becomes whitish or hazy. The sky thus is clearest in winter, in the morning, after a rain, over a mountain, or over the ocean. Leonardo da Vinci experimented with light and attempted an explanation of the sky's blue color. The work on light and its behavior by Sir Isaac Newton, Lord Rayleigh, and other physicists provided explanations of rainbows, sky color, mirages, and other atmospheric phenomena.

What does it mean when you dream about the sky?

The sky usually signifies peace and freedom of expression when it is clear and blue. If cloudy and overcast, the sky may be forecasting sadness and trouble.


In the daytime the apparent blue dome resting on the earth along the horizon circle; at night the blue becomes nearly black.


1. the apparently dome-shaped expanse extending upwards from the horizon that is characteristically blue or grey during the day, red in the evening, and black at night
2. outer space, as seen from the earth
3. weather, as described by the appearance of the upper air
References in periodicals archive ?
Skyjack may not solve any mysteries, but this "offbeat (sometimes downright strange) yet mostly fascinating quest book" (Oregonian) undoubtedly moves the discussion forward.
We'd like to thank all of our suppliers: IPS, Wurth, Pirtek and Tyrefix, for supplying spare parts, whilst prizes, such as clothing, came courtesy of three leading access platform manufacturers: Genie, JLG and SkyJack.
Facelift's managing director Gordon Leicester commented: "The reason we chose Skyjack was because of their reliability and excellent service history.
Returning to the subject of the machines themselves, Skyjack has also been busily strengthening its position in the Middle East.
The City of Cedar Rapids is seeking bids from qualified Vendors for the purchase and delivery of one (1) Skyjack 3226 Electric Scissor Lift or equivalent for the Water Division, 761 J Ave NE, Cedar Rapids, Iowa.
Most of the courses offered to him are run by the suppliers of forklifts, propane companies and fall arrest equipment such as Toyota, Skyjack, Genie Industries, Snorkel and JLG.
manufacturer of tree cutter and stump grinding equipment; Skyjack, manufacturer of aerial work platforms; Terrequip Inc.
The survey was carried out for the Daily Mirror and GMTV by ICM Research to mark the forthcoming anniversary of the murderous September 11 skyjack attacks on the World Trade Center and Pentagon.
He said the September 11 skyjack horrors were a "wake-up call" to Muslim nations as well as the West.
From the manufacturer's perspective, Malcolm Early, marketing VP at Skyjack, concurs: "In general, business is good with positive sentiment and confidence among the rental customers that are our target market.