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What are UV rays? Harm of UV rays to skin and tips to protect skin in summer

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1 What are UV rays? Where is it? Sunlight is classified into 3 main groups based on wavelength: Infrared rays, light visible to the human eye, and UV rays. UV (ultraviolet radiation) is a form of electromagnetic radiation that comes from the sun or other man-made sources such as tanning beds, soldering irons, etc. The term ultraviolet in ultraviolet means above the color of the color. purple . Purple is the color with the shortest wavelength that our naked eye can see. Because it is beyond the wavelength of purple, UV rays are invisible to the human eye. UV rays are electromagnetic waves with wavelengths shorter than that of visible light but longer than that of X-rays . The spectrum (band of all possible frequencies of electromagnetic radiation) of ultraviolet light can be divided into two regions: the near ultraviolet region (with wavelengths from 380 to 200 nm ) and the ultraviolet region. Also known as the vacuum ultraviolet region (with wavelengths from 200 to 10 ...

5 common skin problems on hot days and how to fix them

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1 Sunburned skin Summer is when the sun appears most and is most intense , they accelerate skin aging and cause sunburn. The most common symptoms of sunburn are red, warm to the touch , burning pain, small blisters or blisters . Depending on the severity, this will appear within hours or days after exposure to the sun. To overcome this problem, drink a glass of cold water to cool your body, then apply a light gel-textured product to soothe and help lower your skin temperature. The best ingredients to soothe sunburned skin are aloe vera, chamomile, cucumber, etc. You should also apply sunscreen before going outside to limit sunburn. 2 Acne In the summer, UV rays and harsh sunlight cause the skin to produce more oil , which clogs pores leading to more acne . The best way to take care of acne-prone skin is to keep it clean. To prevent this situation, you must limit sebum secretion, keep the skin clear and clean. Besides, you need to add to your diet a lot ...

Serious mistake using food wrap everyone makes

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Food wrapping film today has become an indispensable item in every family's kitchen. Food wrap helps to cover food or wrap food, instead of having to wrap it in plastic bags that are not safe for health. However, using food wrap is very important to not cause harm to health. This is not exactly what everyone knows and even often makes serious mistakes. So what was that mistake? Wrong use of food wrap Many families use film to wrap food in the microwave, which is both convenient and safe. But in fact, this approach is completely wrong and affects everyone's health. Most manufacturers promise that a wrap can be used when microwave ovens are heated to high temperatures. Therefore, this habit is applied by many families. However, absolutely do not use food wrap in the microwave! Soft, thin plastic food wrap, not suitable for use in the microwave. When you cook food at high temperature using food wrap, the plastic wrap will release the food, causing the contaminated food...

How to check if you have a fever without using a thermometer

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1 Recognize and check for signs of fever To see if your body has a fever, you can identify it by doing the following: Check your forehead and neck This is the first common test where you don't need a thermometer when determining your feverish body temperature. Use the back of your hand (not the palm of your hand) to check the forehead and neck area for a warmer feeling than usual? Does the skin look red? Fever will cause the skin on the cheeks and face to turn red, you should observe. However, for people with darker skin, it is difficult to notice. Tired face, not awake Fever is also often accompanied by symptoms that make the face more tired and lethargic. Especially, with young children, you can easily recognize when they are often upset, crying about feeling tired, weak, anorexia or refusing to play. Body ache You ask if the person with the fever feels pain or not? Often pain in the muscles and joints, even headaches. Thirsty When a person has a fever...

Da Lat, Lam Dong tourist attractions are romantic, peaceful, fresh and cool air

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1 What is the right time to travel to Lam Dong? Lam Dong has cool weather all year round, so this place is often chosen by tourists to "avoid the heat". The most suitable time to travel to Lam Dong is from November to June , this time is the dry season, the weather is just beautiful to make your excursions. Besides, from July to October, you should consider traveling in Da Lat because the rainy season lasts, your trip may be affected. 2 The most famous check-in locations in Lam Dong for you to "live virtual" Valleys love Valley of Love is a prominent tourist destination of Da Lat and is loved by many tourists, especially couples. This place was built by the French, is considered the resting place of the nobility in the past. This place is a panorama of charming and poetic countryside and is called "the sublimation place of love". Xuan Huong lake Xuan Huong Lake is located in the center of Da Lat city and is known by lovers as "t...

What is PM2.5 fine dust? Harm and ways to prevent fine dust PM2.5

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1 What is PM2.5 fine dust? Dust is a mixture of solid or liquid compounds floating in the air, the compounds in dust are also known collectively as Particulate Matter – PM symbol. In which, dust particles with microscopic size ( micron ) are best known such as: PM10: Fine dust with a diameter of 2.5 to 10 microns the size of a millionth of a meter. PM2.5: Fine dust less than 2.5 microns in diameter. PM1.0: Ultra-fine dust with a size of 1 micron. PM0.1 nano dust: Ultra-fine dust less than 0.1 micron in size. PM2.5 fine dust is tiny dust particles present in the air with a size of 2.5 microns or less (it's about 30 times smaller than a human hair). The symbolic size of some types of dust compared to a human hair and a grain of sand. 2 Causes of PM 2.5 . dust PM2.5 fine dust appearing in the air originates from natural causes and man-made causes. Natural causes Wildfires : Large wildfires worldwide are largely caused by abrupt climate change. Su...