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Infrared rays, also known as infrared radiation or IR, are a form of electromagnetic radiation with wavelengths longer than those of visible light. While invisible to the naked eye, infrared rays are present around us and play a significant role in various aspects of our lives. From scientific and medical applications to everyday devices in our homes, infrared rays have proven to be incredibly versatile. In this article, we will delve into the world of infrared rays, exploring their characteristics and applications that have contributed to advancements and improvements in our lives.
Discovered in the early 19th century, up to now, infrared rays have been widely applied in daily life with specialized fields such as medical, electronic, military,… Let’s find Learn more about infrared rays and their applications through the article below.
What is infrared ray? How many types are there?
Infrared is electromagnetic radiation with a wavelength longer than visible light.
Normally, our eyes can see 7 colors of light from purple to red, of which red light has the largest wavelength of 700nm. Therefore, infrared rays will have wavelengths in the range of 700 nm to 1 mm and are divided into 3 types according to wavelength length.
This includes near-infrared, mid-infrared and far-infrared. Far infrared rays have the longest wavelength and the lowest radiant energy.
Working principle of infrared rays
All objects with a temperature greater than 0 degrees K can emit infrared rays, such as LED lights, TV remotes, computer monitors, … and a large amount of infrared rays come from the sun. Scientists have proven that far infrared rays with wavelengths from 4 to 14 micrometers are very important for the life, growth and development of organisms on Earth.
Far infrared rays when in contact with the skin on the body will radiate heat, warm and spread to the surrounding areas. This heat helps promote the body to produce substances that repair proteins and strengthen the body’s immune function.
With a long wavelength, far infrared rays are very safe for health and completely harmless to the body.
Application of infrared rays in life
Infrared rays are widely used in medicine , proven to be able to treat many diseases such as cancer, gastritis, hepatitis, prostatitis, high blood pressure, asthma, .. In addition, infrared rays also help to soothe the wounds caused by cold or hot burns, have the effect of beautifying the skin, treating acne, …
Electronic devices such as remote controls, optical mice, etc. use LEDs emitting infrared rays to transmit information. Infrared sensors in many public places such as airports, hospitals, … help identify people and objects moving around, as well as detect foreign objects in passengers’ suitcases.
In particular, infrared rays are applied to night vision equipment such as surveillance cameras, headlights, … to help us observe in low-light environments, widely used in the military as well as in the military. daily life.
Hopefully with the above article, you have gained more useful information about infrared rays and their applications.
In conclusion, infrared rays are electromagnetic waves with a longer wavelength than visible light, making them invisible to the human eye. They are widely used in various applications in our daily lives. Infrared rays have revolutionized fields such as communication, security, and healthcare. Infrared-based devices like remote controls, thermometers, and cameras have become essential tools in our homes and workplaces. Furthermore, infrared imaging technologies are utilized in medical diagnostics, search and rescue operations, and even in agriculture. With their ability to detect and measure heat, infrared rays have proven to be invaluable in enhancing our understanding of the world around us. As technology advances, we can expect further developments and discoveries in the applications of infrared rays, leading to more efficient and effective solutions for our everyday needs.
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