Solar Eclipse from Rangpur, 22July 2009

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Solar eclipse is rare than lunar eclipse. Particularly full solar eclipse is very very rare. On 22nd July we enjoyed a such a full solar eclipse from many areas including Rangpur, Bangladesh. I have tried to have some picture with my nonprofessional experience but sky was somewhat cloudy particularly at the time of most exiting moment during full eclipse.

It could be injurious to eye to look at the sun particularly several minutes before and after the full eclipse. At this time our pupil become larger in size because light intensity become slows down. Our eye reacts like an automatic camera . It opens in darker and closes in brighter light. In extreme light size of pupil can be 0.1 mm in diameter and in darkest light it can as large as 9mm in diameter. So, during solar eclipse if its size become 3 or 4 mm in diameter the light from exposed part of the sun will enter in our eye on the macula with a effect of intensity of 30 to 40 times than other time of normal days and it is sufficient to burn our macula causing blindness. It can be compared with looking at torch light at night or viewing television in dark room which disturb our vision but not at day time. In any time intensity of the sun never goes down or increases or there is no variation of UV light coming to the earth from the sun. Looking at sun in normal days for few minutes or like may also causes burning our macula of eye.