Earth night is a surprising phenomenon, given humanity

People are so accustomed to the change of day and night that already accept this phenomenon as routine. However, as many interesting questions can arise in his head, if he cast a familiar view and try to see things from a completely different angle. In fact the earth's night – it is an amazing phenomenon that gave rise to many laws.

So let's take a little journey through our Universe and finally find out how it is unique. In particular, let's talk about what the role of a night in the life of our planet.

What night?

The Night – this physical phenomenon is due to the partial absence of light. This happens because the Sun appears on the reverse side of the planet, causing its rays do not fall on the part of the surface of the Earth. Funny is that even at night our planet is not devoid of all light, otherwise people simply would be unable to see anything beyond their noses.

It should Also be noted that the night – it is rather a relative phenomenon. Its duration can vary greatly depending on the time of year and geographic location.

What could be the night?

So, as mentioned earlier, the night – this amazing phenomenon with many forms and types. The simplest example may be the presence or absence of the moon and the stars in the sky. However, some nights quite unlike any other, is able to charm the casual viewer.

So, the most beautiful is the polar night. In regions located in extreme latitudes the twilight are much longer. Occasionally twilight here can last the whole day, only occasionally retreating behind the horizon. But fascinating is that it is in these moments here you can see the Northern lights illuminating the sky with hundreds of different colors.

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The Complete opposite is white night. Thus, in temperate and high latitudes during the summer solstice, even at midnight, the world can be as bright and clear as day.

Night – this is the time when all life rests

But let's leave physics behind and talk about what gave the night all living beings on the planet. It is in this period almost all organisms accustomed to rest. Of course, there are those for whom the darkness – this is the best time for action. But the arrival of the night – bell, calling to sleep.

Just think about how important for us this holiday. The whole burden of responsibility for having taken a day the solution is washed off the night's sleep. Not to mention the fact that it takes away from the streets that heat that comes to us in the hot periods of the year.

Considering all the above, we can safely say one thing: night – it is an amazing phenomenon that should be seen as a gift, and not as commonplace.