Why the sunlight is necessary?
One of the major factors providing existence of all live on the earth are a sunlight. You remember, in the childhood we were taught what light - a life source on Earth?
Of what the sunlight consists? the Range of sunlight has
seen by the person, infrared and ultra-violet speak rapidly. Visible light is electromagnetic waves in the range of the frequencies perceived by a human eye, that is, radiation with wavelength from 740 nanometers (red light) to 400 nanometers (violet light).
Infrared (or thermal) radiation is a type of distribution of heat. This same heat which you feel from a hot oven, the sun or from the battery of a central heating. Any negative influences of infrared radiation on a human body are unknown to science. It has nothing in common neither with an ultra-violet radiation, nor with x-ray. Absolutely safely for the person. Moreover, now infrared radiation found very wide circulation in medicine (surgery, stomatology, infrared baths) that speaks not only about its harmlessness, but also about useful effect on an organism.
An ultraviolet - invisible, short-wave part of a range of sunlight. Depending on wavelength the ultraviolet is divided into three types: And, In and Page. The most rigid radiation of UVC practically does not reach the Earth`s surface, being completely absorbed by an ozone layer. The ultraviolet In not only stimulates cages to produce melanin, but also causes reddening of skin, erity that is the first symptom of a burn. As for UVA beams, they possess a bigger penetration, than UVB beams, they are stopped by neither clothes, nor glass, they pass all barriers and affect skin all the year round, but exert smaller negative impact.
What we know about the Sun?
In spite of the fact that the Sun is very far from Earth (149 million. km.) the surface of our planet receives rather solar radiant energy, including infrared and ultra-violet radiations which are not seen by an eye.
The sun represents itself a hot gas sphere. It by 750 times surpasses in weight all other bodies of Solar system, combined. The extent of the Sun (1392000 km in the diameter) is very big to terrestrial measures, but in the world of stars it is allocated with nothing special. However more and more arguments in favor of some singularity of our Sun appear in recent years. In particular, it radiates an ultraviolet less, than other stars of the same type. It has bigger weight, in comparison with similar stars. Besides, these the stars, most similar to the Sun, are noticed in inconstancy, they change the gloss, that is, are variable stars. The sun does not change considerably the brightness. All this is not a reason for pride, but the basis for more detailed researches and serious checks.
The sun - the main source of energy for all processes which are made on the globe. All biosphere, life exist only thanks to a sunlight. However, from - for rotations of the earth round its pivot-center and around the sun, various grounds are lit unevenly. In Ukraine, for example, in the period of a summer solstice (on June 22) day length, that is light part of days, reaches a maximum and makes 16 hours 22 minutes, and then decreases and in the period of a winter solstice (on December 22) makes only 8 hours 4 minutes. Will be …
When light a little a little …
Ancient civilizations read the sun as creator of all benefits. Romans, Greeks and even Slavs honored god of the Sun (each people - the) and worshipped it. Each antique monument which had cult mission was under construction so that it was possible to observe sunrise through “ sacred gate “ - a special arch or an opening in a wall. “ The child was born “ “ light at the end of the " tunnel; “ enlightenment “ and “ light person “ - the similar expressions transferring a positive word meaning “ light “ exist in many languages. There is nothing surprising in such honoring of a star: from the point of view of biology we are day beings, and directly we depend on the sun.
Six months in a year day length makes less than 12 hours. Moreover in the oseena - winter days often there is cloudy weather when the sun is not shown from at all - for clouds. And here I work in the industrial region of the city where the sun is not visible just from - for a smoke screen, the smog going from factory pipes. Too “ cheerfully “.
In the winter we wake up in the dark and we finish the day affairs many hours later later sunset. Respectively, light stimulation for an organism has not enough. And what we have as a result? Discomfort, depressions, violations of health and emotional mood, digestion.
For compensation of a lack of light use artificial light sources for external and internal lighting of buildings and constructions, and also in them. Generally, the light day is shorter, the we spend more electricity. And it, in - the first, is expensive (especially against continuous rise in price of kilowatt), and in - the second, actually the sunlight cannot replace to us. In some degree can help out fluorescent lamps - at them not yellow, but white color of radiation. But my many acquaintances say that such lamps make impression of the operating room in the apartment.
When sun Sun radiation Power huge is a lot of …
. To Earth only about one half of a milliard share of all energy of the Sun gets. But exactly thanks to this energy on Earth there is a water cycle, winds blow, life developed and develops.
However there are also minuses in it, apparently, positive, the phenomenon. Holes in an ozone layer of the atmosphere, the radiation deprived at least of the minimum protection all this causes the certain inconveniences and serious problems which are not allowing to enjoy completely those benefits and that advantage which the sun can give. Presenilation of skin, reddening, burns of skin and retina of eyes, not esthetic spots, loss of consciousness during so-called “ sunstroke “ and even increase in risk to ache with cancer diseases - all this can be caused by too long stay under the Sun.
The ultraviolet oppresses activity of immune cells of skin that leads to activization of the viruses which are peacefully dozing in an organism. Therefore abuse of the sun often causes an exacerbation of herpes or growth of papillomas.
And all - it is necessary
That, lying on the beach, to gain the maximum antistress effect of solar bathtubs, psychotherapists recommend the following receptions: to breathe slowly, entirely filling with air lungs and to slide freely an out-of-focus look on a water smooth surface. Positive impact at the same time amplifies at the expense of a tsvetoterapiya: water absorbs the exciting red colors of a range and reflects blue, calming nervous system, and relaxing a body.
Under the influence of an ultraviolet our skin produces vitamin D which interferes with washing away of calcium from bones and teeth, protects heart and vessels and prevents emergence of some cancer diseases. Thanks to vitamin D in skin there is a uniform distribution of melanin, and it receives an equal shade of suntan.
The American scientists found out that the sunlight can help at treatment of skin diseases by activization of immune system with skin blankets. According to new research, under the influence of a sunlight certain cells of skin transfer D3 vitamin to an active form. It causes migration of T - cages of immune system which destroy the infected cages and regulate other immune processes.
Sunlight stimulates production of endorphins, “ pleasure hormones “ therefore it is considered that a sunlight - the best natural antidepressant. Its positive influence extends also to the sphere of the interpersonal relations: while the cold induces us “ to be closed “ sun, on the contrary, “ opens “ us in relation to the outside world, to people around. For this reason it is easier for us to come into new contacts in the summer, to get new friends.
In a word (or not one), in everything it is necessary to know when to stop, and then the Sun, so necessary for us at any time and years, will be for you a tender and reliable friend.