1. Water is Blue not only because of a refection of the sky but also blue is its real color
school textbooks teach us that blue in the water is caused by a reflection of the sky and that's what I know until I read article about this. however, blue is the real color of water in the sea.
The molecules of water absorb light and they absorb red frequencies more than the frequency of blue, so blue frequency appear on the surface. The effect is small, so the blue color only becomes obvious when observing layers of water or in dense enough. In salt water or mineral springs, the color of dissolved minerals can be seen.
2. Seasons are not the same length
School textbooks teach us that every season has the same length, but it is not right... We had read an article that every season has different length.
Because the Earth moves faster in its orbit as it approached the sun, summer in the southern hemisphere / northern winter season in the earth is the shortest time, with summer in the north or south of the longest winter. However, the difference is only felt a few days.
3. You will not get a cold just because low temperature
Many people said that getting cold / flu is caused by the changing of season and low temperature. in the fact, getting flu commonly is caused by a virus and had nothing to do with low temperature / cold.
by: Luzken P.M.
No comments:
Post a Comment