Where are UV rays? Light, cool weather, are there UV rays in winter?

UV rays, also known as ultraviolet rays, are a form of electromagnetic radiation from the sun. It is divided into three types: UVA, UVB and UVC. So where else are UV rays outside of the sun? What is the level of its harmful effects? How to protect the body from its radiation? Let’s find out with Roostershirt through the article below!

Where are UV rays?

According to some studies, UV rays can be emitted from a number of different sources and affect health, especially the skin. So where do UV rays come from?

UV rays from the sun

Many people probably know this, most UV rays (or ultraviolet rays) come from the sun, it is a form of electromagnetic radiation and causes many health problems such as: sunburn, skin aging, skin cancer, cataracts, weakened immune system. Therefore, it is recommended that people limit exposure to the sun and use sun protection measures when going out and working outdoors.

UV rays are divided into three types:

• UVA: This ray has the longest wavelength, does not cause sunburn but can cause skin aging, contributing to skin cancer.
• UVB: Medium wavelength rays, can cause sunburn and contribute to skin cancer, accelerating the process of skin darkening.
• UVC: This is a short wavelength, blocked in the Ozone layer so it will not affect too much.

So you can see that when introducing sun protection measures, people will focus on protecting against UVA and UVB rays, through physical and chemical forms or physical and chemical hybrids.

UV rays from lights

According to some research, UV rays can be emitted from some types of lamps we are using. Mentioned as:

• Fluorescent lamps: These lamps use mercury to produce UV rays that are then converted into light.
• LED lights: Some LED lights use light-emitting diodes to create UV rays, used to kill bacteria, sterilize or check the authenticity of items.
• Electric arc lamp: This type of lamp is often used in welding, metal cutting, and metallurgical production.
• Incandescent lamps: Some amount of UV rays can be produced by the high temperature of the incandescent filament, but it is not significant.

However, you must understand that not all lamps emit UV rays. And whether the amount of UV is harmful or not depends on the type of lamp and its operating capacity. Usually it only affects the eyes, making your eyes blurry after long exposure or making your skin dark and not bright. But it will quickly recover if you stop exposure.

Some questions related to UV rays

The answers to questions related to UV rays below can help you protect your health and skin in the most optimal way.

How to determine whether there are UV rays or not?

• You can observe with your eyes, if it is sunny there will definitely be UV rays and it is very strong. If the sky is clear or cloudy, UV rays will be very weak.
• Use the UV sensor through UV test cards, if the card turns purple then yes, the darker it is, the stronger the UV rays are.
• Currently, some mobile applications have outdoor UV index notifications, which you can monitor daily.

Does it have UV rays in cool weather?

The answer is yes, UV rays are still present in cool weather because these rays can penetrate clouds, fog and even glass. So in cool weather you can still be affected by UV but its level is not too strong.

Does rain have UV rays?

UV rays have the ability to penetrate water, so even if it is raining heavily or in the shade, you are still completely affected by these rays. But clouds and rain have the ability to absorb and reduce the amount of UV rays, so the level is not as great as sunny days. The amount of UV rays will vary depending on the thickness of clouds and rainwater.

Are there UV rays in winter?

Many people often think that there will be no UV rays in winter, so they skip the step of covering up when going out. In fact, UV rays are still present in winter, but they are weaker than summer and other sunny seasons. It only harms the eyes and darkens the skin, so you can completely take basic protective measures.

Does the computer have UV rays?

Computers do not emit UV rays, but they do emit blue light, which is also harmful to the skin and eyes. Many people often mistakenly think that these two types are the same, in fact UV rays are more likely to cause harm.

Are there UV rays in the house?

Whether or not it depends on the structure of your house, if the house is closed and light cannot penetrate, it will not have UV rays. If the house is airy, has lots of light, and has glass doors, there will definitely be UV rays, but the level will be lower than outdoors.

Many people think that if a house has glass, there will be no UV rays. In fact, this ray can penetrate through glass. So if you want maximum sun protection, choose glasses that can block UV.

Effective way to protect against UV rays

UV rays are all around us, it may be more or less, strong or weak, but we should always know how to protect ourselves. Below are some ways to effectively protect against UV rays that you can refer to.

Limit exposure to sunlight
– If you have nothing to do, limit your exposure to the sun and choose cool, shaded places to stop. Avoid going out when UV rays are strongest, which is midday, from 10 a.m. to 4 p.m.

Physical shielding method
– This is definitely the top solution that people choose when they go out and are exposed to the sun.
– You should choose sun protection shirts and sun protection straps that are resistant to UV rays and have a high SPF index. Currently, in the Vietnamese sunscreen market, there are outstanding product lines with sun protection capabilities of up to 97% and 99.95%.
– In addition, you can choose to add a sunscreen mask for optimal protection for your face. This also seems to be the most sensitive area, so you need to focus on sun protection even more.

Use sunscreen
– You should apply sunscreen with an SPF index of 3 or higher, broad spectrum that protects against both UVA and UVB rays, and is waterproof to avoid sweating that reduces sun protection.
– Choose a cream suitable for your skin (dry skin, oily skin, combination skin, acne skin) to avoid causing other conditions such as acne, dry peeling, and increased dark spots. Currently on the market there are many brands, with physical, chemical or hybrid lines of the two. Read reviews, instructions or follow your dermatologist’s instructions.
– You should apply sunscreen twice a day because currently most sunscreens will be effective for 4-6 hours. You should apply cream 20 minutes before going out.

See more:

• What fabric is burlap?
• What fabric should I wear to stay cool in the summer?

Above is the answer to the question where UV rays come from and how to effectively protect against UV rays that you can refer to. Don’t forget to follow Website Roostershirt.com to enjoy shopping as well as learn many other interesting fashion knowledge!