http___metro-portal.hr_djelomicna-pomrcina-sunca-u-utorak_53546_1.xml
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This is a diagram of a typical solar eclipse. During a total solar eclipse, the umbra reaches the Earth. During an annular eclipse, it does not. An eclipse occurs when the Moon passes in the path of the Sun and Earth. Click on image for full size Windows to the Universe original image Solar Eclipses An eclipse of the Sun occurs when the Earth passes through the Moon's shadow. A total eclipse of the Sun takes place only during a new moon, when the Moon is directly between the Sun and the Earth. When a total eclipse does occur, the Moon's shadow covers only a small portion of the Earth, where the eclipse is visible. As the Moon moves in its orbit, the position of the shadow changes, so total solar eclipses usually only last a minute or two in a given location. In ancient times, people were frightened by solar eclipses (even back then people realized that the Sun was essential to life on Earth). Now eclipses are of great interest to the public and to astronomers. Eclipses provide an opportunity to view the Sun's outer atmosphere, the solar corona. If you ever get to view a solar eclipse, make sure to never look at the Sun directly! Always use one of these safe techniques. Shop Windows to the Universe Science Store! Cool It! is the new card game from the Union of Concerned Scientists that teaches kids about the choices we have when it comes to climate change—and how policy and technology decisions made today will matter. Cool It! is available in our online store You might also be interested in: Eclipses have been watched for centuries, but it was only recently that we understood what really occurs. Eclipses have always been fascinating to watch, but they weren't always welcome. For many years,...more Rising above the Sun's chromosphere , the temperature jumps sharply from a few tens of thousands of kelvins to as much as a few million kelvins in the Sun's outer atmosphere, the solar corona. Understanding...more On Thursday, June 21, 2001, there will be a total eclipse of the Sun. The eclipse will only be visible from parts of Africa and Madagascar. The triple line on the image to the left shows the path of where...more The last solar eclipse of this millennium occurred on August 11, 1999. Amateurs and scientists witnessed a truly awesome site. This was a total eclipse, which means the Moon completely covered the Sun....more The last lunar eclipse of the millennium in North America is this week! On January 20, 2000, which is Thursday for those living in North America, a total lunar eclipse will occur. A lunar eclipse is different...more Peru's new president, Alejandro Toledo, was sworn in on July 28, 2001. The next day he visited Machu Picchu and Cuzco. There were ceremonies at both locations where Toledo asked for the blessing of the...more There is a solar eclipse coming to a movie theater near you! Actually, this is better than a theater! This is the real thing! There will be a total solar eclipse on February 26th. The total eclipse will...more
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Djelomična pomrčina Sunca u utorak Djelomična pomrčina Sunca bit će vidljiva u cijeloj Hrvatskoj u slučaju vedrog vremena, obavezno koristite zaštitu za oči! Nakon potpune pomrčine Mjeseca na prvi dan zime, u utorak 4. siječnja 2011. godine zbit će se djelomična pomrčina Sunca. Vidljiva je iz Europe (osim Islanda), sjevernog dijela Afrike, zapadne i središnje Azije, te s cijelog Arapskog poluotoka. Pomrčina Sunca nastaje kada se Mjesec nađe točno između Zemlje i Sunca. Kod djelomične pomrčine Sunca, Mjesec ne zaklanja kompletni disk Sunca, pa se prilikom promatranja pomrčine moraju koristiti zaštitni filteri (naočale za zavarivanje, posebne folije od Mylara i sl.) jer će inače zbog velikog sjaja Sunca nastupiti trajna oštećenja oka. Ni u kojem slučaju ne promatrajte Sunce teleskopom ili dalekozorom bez zaštitnih filtera jer ćete trenutno izgubiti vid! Iz Hrvatske će se ova pomrčina vidjeti u prijepodnevnim satima, a u sredini (maksimumu) pomrčine će imati dosta veliku fazu od oko 75%. Faza pomrčine je postotak Mjesecom prekrivenog dijela prividnog promjera Sunca. Pomrčina se može promatrati uz korištenje zaštitnih filtera iz bilo kojeg mjesta u Hrvatskoj gdje je vrijeme vedro. Za promatranje nije nužno koristiti teleskop jer se pomrčina može lijepo vidjeti golim okom uz obavezno korištenje zaštitnih filtera. Podaci o početku, sredini i kraju pomrčine, te o najvećoj fazi za pojedine gradove u Hrvatskoj su dani u tablici: Izvor: Zvjezdarnica Zagreb