Solar radiation: how does it affect you?

The sun is a source of health and beauty, but according to the frequency and duration of the exposure we make to solar radiation, the effects may be favorable or not so much.Remember that the effect of Sun is not immediate and can cause some problems that we will detail below.

Red, reddish skin

The skin redness after exposure to the sun , it can take up to 24 hours to appear, since that is the period of time that the blood vessels need to dilate and allow more blood to reach to the cells affected by the rays.Also, it is also what it takes for the skin to make the “ melanin ”, that is the pigment that darkens our skin.

The radiations of the Sun and the ozone layer

The radiations of the Sun that are received on the Earth's surface change as it passes through the Atmosphere.There are some radiations that are carriers of high energy content, such as gamma rays, UVC, UVB, etc.The effects of these radiations on humans depend on energy, that is, on the ability to penetrate the skin.

Solar radiation: how does it affect you?

The ozone layer is responsible for stopping to some extent the radiations incompatible with our health, ultraviolet rays, thus preventing them from reaching the Earth's surface and causing alterations that In some cases they can be lethal.We are all aware of the deterioration that the ozone layer permanently suffers, although it is still very difficult to quantify it.

The penetration of radiation in our body

Solar radiation penetrates our skin according to the optical characteristics of the skin and the wavelength of radiation.There are four fundamental processes and they are reflection, diffraction, direct transmission and absorption.The tan is a form of skin response to the radiations of the Sun , its capacity changes from one person to another and can develop different stages such as direct or indirect tanning.

Solar radiation: how does it affect you?

Due to its strength and heat, solar rays also have the property of burning our hair , and together with the saline effect, the hair can become clear in a simple symptom that it is being negatively affected. ultraviolet rays alter the hair matter and at the same time discolor the hair; later it will appear brittle and dry.Then: take care of the sun's rays!

Images: jimaral , Martin Canoval

Comments

Are older brothers more intelligent?

Throughout the years different analysts have thrown some hypothesis in relation to the intelligence of the children and the order in which they are born , but everything had remained in mere conjectures.Until now , when a group of researchers finally confirmed that older children are actually smarter than their little siblings. The first children are smarter A group of researchers from the University of Leipzig , Germany, determined that the firstborn are more intelligent than the later brothers.The intellectual value begins to descend with each new brother.Although the researchers clarify that although the order of the children can determine their intelligence , this aspect does not condition the child's personality. In order to reach This conclusion, the researchers studied and analyzed three databases from Germany, the United Kingdom and the United States .Aspects of vital importance were taken into account, such as family origin, size, socio-economic class and , ...

Why do we get red eyes in some flash photographs?

In Science Daily Online we once gave you 5 tips to go spectacular in the photographs.One of the things that most often bother us when we take a photo is to appear with the red eyes Why does this happen? In this article we tell you. Why do the eyes appear red in some photographs? The « red-eye effect » usually occurs when the flash is used at night or with a very dim light .The light emitted by the camera is reflected at the back of the retina and She's getting it.Why red? Because the light that comes back to the face is the reflection of the numerous blood vessels of a membrane called choroid that is in the retina, so it has that red hue.Quite disturbing. Those who have the dark eyes have less chance of appearing with red eyes because they may have enough dark pigment so that the reddish hue is not reflected. When does it appear? When we use flash and look directly at the camera lens and therefore its light is reflected directly in our retina. It sh...

Is it true that there is a "fifth taste"?

At school we have been taught that there are four basic flavors: sweet, salty, bitter and acid , but in recent years there has been a need to take into account a fifth flavor, which until the moment had been overlooked.They call it " Umami ", which in Japanese means something like "pleasant or tasty flavor". Although we have to make a nuance.There are many those who refuse to accept the existence of this fifth flavor.The reason? Because more than a flavor that we can all identify, the umami would be rather a perception, an indefinable sensation that does not abound too much in our food and that only chefs strive to seek to give their dishes an almost addictive flavor.Have you ever asked why Japanese food is so tasty ? Or why do we like french fries or snaks so much? Why most contain umami, or what is the same "monosodium glutamate". But what does the "Umami" taste like? Here comes the key question: what does the Umami taste like? Scie...

10 things you didn't know about living in space

Is there extraterrestrial life in the galaxy? It is almost certain that yes, although with certainty we can only affirm it on the surroundings of the Earth, where since the end of the 1950s there have been human beings coming and going in different space vehicles, or spending more or less long stays in stations and Space labs like the Skylab , the Mir station or the ISS . We invite you to know some curious facts about how is to live in an environment "far from this world", although not so much. 10 things you didn't know about living in space 1.In the International Space Station (ISS, by its acronym in English) you can see the sunrise 16 times a day .This can be fun at first, make you feel like the Little Prince in its asteroid, but it can eventually confuse you around the development of time and daily activities. The schedule at the ISS is based on Greenwich Mean Time (an intermediate hour between Londr it is, Houston and Moscow) and it is about performing a ...

The amazing labyrinth of Reignac-sur-Indre

We are in a beautiful region of the center of the Loire, right in Reignac-sur-Indre .This exceptional place is rich in dense forests, in an important river that crosses and nourishes it, and Wherever you leave your eyes, everything will be saturated by soft green hills, limestone hills, ocher meadows, large fields of corn and numerous sunflower fields. Here, just in case the natural imagination wasn't already quite suggestive, the human hand has also wanted to raise a unique tourist attraction: the largest vegetable maze in the world. Amazing! We invite you to meet him. The magic of the labyrinth of Reignac-sur-Indre The idea was original and almost immediately successful.It was in 1996 when in this field of sunflowers of 4 hectares, the first plant maze in the region was raised and the one that so far, is the most extensive we can find in the whole world.No one knows very well why, but people love to "get lost" Between its winding corridors, its corners tha...

And you, also "procrastins"?

And you? Procrastines too? If you don't, we are sure that you know someone who does it continuously and that, surely, makes you despair.But what does this disturbing word really mean? Let's give an example: you have been dating a person for a long time, you make plans for the future, you have many illusions and projects, however, your partner never seems to decide.He is unable to formalize your relationship because something like that, not only overwhelms him, but even He is lazy. "Are we not well like that?" I often reproach you. Let's give another example: you may have the classic friend who never seems to finish his studies.It is easy to be an "eternal" university student who faces the responsibilities and anxieties of the working world. And what about people who spend all their time in front of a computer screen letting out "real life" ? Sometimes, it is much easier to let ourselves go, evading responsibilities, than to put means t...

North Pole and South Pole: 7 differences to know

At first glance, they may seem the same, but if we look in detail we will find differences that make them unique.The North Pole and South Pole represent the extremes of the planet we inhabit, those that suffer the most from global warming and those that have a unique beauty. In Science Daily Online we tell you 7 differences that you should know about the opposites of the Earth . North Pole and South Pole: 7 differences to know 1.Between Contains and oceans The North Pole is surrounded by sea and land , a part of the northernmost part of America and Europe are within the Arctic region.In contrast, The South has nothing but the waters of the Antartico Ocean , thick ice sheets and temperatures so low that some places do not melt during the summer.As a reference, the closest it is to southern Chile and Argentina. 2.With and without population Having more land around it and "bearable" temperatures, in e l North there are more people, flora and fauna, even Santa Clau...

The Smilodon, the fantastic "saber teeth"

The Smilodon. Few prehistoric creatures are so beautiful and impressive at the same time, like this unique feline better known as "saber teeth".Experts say more than belonging to the family of big cats like the tiger or the lion, the Smilodon is more like a red lynx. It was simply beautiful, it lived along the American continent at the end of the Pliocene and became extinct 10,000 years ago.reason? Due to the climatic change of our planet.As the temperature rose, the large dams, the large animals that used to feed: mammoths, horses, prehistoric bison... The smallest animals ran too much and the Smilodon was not a good runner.In addition, he had to face predators more skilled than them, as was the case with the giant wolves.That is, the change of the derived ecosystems by general warming , I have just defeated these wonderful animals, which, without a doubt, we would have loved to know. The Smilodon (saber teeth), a fierce predator First we must clarify one aspec...

Why do I see stars when I sneeze loudly?

Before moving on to the article we would like to remind you that we have launched a YouTube channel and that we would be very happy if you subscribed to watch our videos, you can click here–> Science Daily Online YouTube It can be annoying to watch things that aren't there, whether it's pink lights, shadows or elephants, but when people close their eyes, if they have a migraine or even sneeze, they can see a variety of ghostly lights and sparkles . What is happening? All these luminous visions are caused by the stimulation of the back of the eye, or the optic nerve, which transmits the experience of light to the brain . Inside our eyes is a thick gel, which keeps the eye in good condition.This gel can brush the retina, the part of the eye that creates image it is in our brain .When the brain receives a message from the retina, it interprets it as light.So if there is light or not entering the eye, any retinal stimulation will be interpreted as a spectacle of ...

Science Daily Online

Search This Blog