Wednesday, December 10, 2008

What Can Replace Dashi Broth

Iridium Flares: Surprise (I) by showing an intense glow in the sky

What if while talking romantically with your girlfriend asked you to look intently at a point in the night sky, and right there, magically appeared after a few seconds an intense glow? Or ... if you tell your nephew for 10 years you're going to call to the ship Enterprise of StarTreck and asked the captain to fire a phaser ... and this appeared in the sky? Well, it seems incredible, but today I want to tell you how ottenere tutto questo, semplicemente, gratuitamente, senza particolari attrezzature o trucchi.
Vi voglio infatti parlare di un fenomeno noto come Iridium Flares . Gli Iridium Flares non sono altro che dei bagliori (a volte molto intensi) provocati dalla riflessione dei raggi solari sulle antenne dei satelliti artificiali della costellazione Iridium , quelli, per intenderci, che permettono la comunicazione attraverso i telefoni satellitari.
I satelliti Iridium sono 66 ed orbitano intorno alla terra in 110 minuti. Capita spesso che in determinato punto della terra le antenne di questi satelliti riflettano la luce solare provocando un intenso bagliore which at times can be clearly seen even in daylight. The time and intensity of such events are directly dependent on the exact position where you are on earth.
If you want to see a video of one of these events can be found here .

to know when will the next Iridium Flares can be found at Heavens Above that will give you all the details.

is what you do: The first thing is to set their coordinates. You can do this manually or search the database of your site location. C ouncil to set it up carefully , because errors the position of a few kilometers can greatly influence the results.

After that you can ask the forecasts for the next 24 hours or 7 days of the ridium Flares. The site will provide you with the various events. For each of these is indicated, the apparent magnitude of the event, the elevation and azimuth.

The magnitude indicates the strength of the glow. Be careful, because smaller values \u200b\u200bcorrespond to a greater intensity. The logarithmic scale is also ... For example, an event with magnitude -8 is 100 times more intense than one with magnitude -3 .

The elevation is the angle between the horizon and the point where you see the glow. An angle of 10 degrees thus indicates that the event is near the horizon, an angle of 80 ° is almost upon you.

The azimuth indicates the direction in which to look. A 0 ° corresponds to the north, 90 degrees east, 180 ° south and so ...

What else to say .... Enjoy!


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