On the 1 of September we have observed a very exceptional phenomenon: a solar eclipse. During this special day we have organised many activities likes: telescopes, observation with glasses for solar eclipse and the measurement of soar radiation.

On the measurement of solar radiation we saw that the solar radiation (with a lux meter) decreasing with time because the Moon was passed in front of the Sun at 3 o’clock pm.

So we concluded that the passage of the Moon in front of the Sun makes decrease the measurement of solar radiation.