Telstra has revealed the addition of almost one million new mobile services in the six months to December 2011, but Sensis revenues plummeted 24 percent in 12 months.
One especially visual photograph
appears on the SpaceWeather.com website. Christopher Calubaquib took
the image over El Sobrante, California, on June 26, 2008.
Calubaquib states, "Because of the smoke, the sun was not very bright, and I didn't need to use a filter to take the picture.” [Photo: SpaceWeather.com]
Photographer Mike Kelly took another picture of the Sun over the sky in
Arcata, California on June 27th. Kelly states, “This photo was not
processed or retouched; it's how the sun really looked.”
[SpaceWeather.com: “SpaceWeather photo: "Sun Through Smoke”]
The so-called effect called the “lavender Sun” is produced when the
Earth’s atmosphere becomes filled with particles measuring about one
micron (one millionth of a meter) across.
Such a size for the particles is just a bit larger than the wavelength of red light.
Thus, these micron-sized smoke particles scatter red light coming to
the Earth from the Sun, but let the Sun’s blue light (whose wavelength
is smaller) to pass through the atmosphere.
Consequently, we see the
Sun as a lavender, or purplish, color. The Sun hasn't changed colored, only our perception of it has changed.
An additional picture named “Smokey Sunset” is available from Ray Rochelle of Chico, California, on the SpaceWeather.com website.
David Bass
| For the fourth year in a row, IDC has placed content security provider Websense (NASDAQ: WBSN) at the top of the IDC Worldwide Web Security 2011 –…
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