Difração

SOL APRESENTA ATIVIDADE NUNCA VISTA ANTES E INTRIGA CIENTISTAS DE TODO MUNDO

Leia mais cliquando aqui

NASA : The Sun Reverses its Magnetic Poles

Read more:
http://www.independent.co.uk/news/science/video-sun-has-flipped-upside-down-as-new-magnetic-cycle-begins-9029378.html

Dawn

Seasons Come and Seasons Glow

 We’ve all eaten more than we can hold, especially this time of year. Did you know plants can get full, too?

The elaborate process of converting sunlight into usable energy (the so-called “light reactions”) is essentially a big chain where one protein hands off electrons to the next in order to break apart water and build up a bunch of hydrogen ions that can be used to power the ATP factory:

It’s a lot like carrying buckets of water upriver in order to power the water wheel at the old mill. The thing is any a given chloroplast can only hold and process so much sun energy at once. In order to prevent damage to the leaf factory, it gets rid of the excess, either via heat or by giving off light.

That’s right, plants can glow! Or more accurately, chlorophyll can fluoresce. And they do it just about any time they are undergoing photosynthesis, it’s just that we can’t see it. But NASA can. Their Earth-observing satellites can detect this excess plant energy and use it to check how active and healthy our planet’s vegetation is.

The above visualization from NASA shows four years worth of plant fluorescence, averaged into one complete seasonal cycle. Winter turns to spring, spring to summer, and autumn leaves fall, played out in waves of glowing pink.

Previously: The world viewed through Kodak’s Aerochrome film … pink plants everywhere!

(via redbeardgeek)

Sunset

Under the Pier by Michael Blanchette

Sunset, Li River, China

What is the color of the sun ?

                      NASA / Jewel Box Sun

Picture: A still image taken from a NASA movie of the sun based on data from NASA’s Solar Dynamics Observatory (SDO), showing the wide range of wavelengths, invisible to the naked eye, that the telescope can view. SDO converts the wavelengths into an image humans can see, and the light is colorized into a rainbow of colors. Yellow light of 5,800 Angstroms, for example, generally emanates from material of about 5,700 degree Celsius, which represents the surface of the sun. Extreme ultraviolet light of 94 Angstroms, which is typically colorized in green in SDO images, comes from atoms that are about 6,300,000 degree Celsius and is a good wavelength for looking at solar flares, which can reach such high temperatures. By examining pictures of the sun in a variety of wavelengths, as it is done not only by SDO, but also by NASA’s Interface Region Imaging Spectrograph, NASA’s Solar Terrestrial Relations Observatory and the European Space Agency/NASA Solar and Heliospheric Observatory; scientists can track how particles and heat move through the sun’s atmosphere.

© EPA/NASA Goddard Space Flight Center

Isto é o que eu chamo de óculos de sol!

PRORAMA LUZ DO SOL (Mauricio Rpriz) Download

http://www.labeee.ufsc.br/downloads/softwares/luz-do-sol

Programa ANALISE SOL-AR download

http://www.labeee.ufsc.br/downloads/softwares/analysis-sol-ar