Have you been having problems going to sleep at night recently? Most likely, you are exposing yourself to more blue light than is healthy. Blue light disturbs sleep and is often the main contributor to restless nights or insomnia. This is not really unexpected given that we spend around 5000 hours each year staring at devices that generate blue light. Jack may or may not become a boring youngster from doing too much work, but he will definitely become a bad sleeper from watching too much television.
But first, what exactly is this blue light? Why is it detrimental to sleep? The most crucial question is: How can you best defend yourself?
We'll address all of these questions and more in this article. So let's start the process.
Describe Blue Light.
Many people associate the term "blue light" with the light generated by screens, including those seen on computers, laptops, tablets, cellphones, and, of course, the trusty television. But because blue light is a component of natural light, the truth is that it has always existed. Therefore, without first comprehending the components of natural light, we cannot understand blue light.
Electromagnetic particles, which make up light, emit energy while moving through various wavelengths. In other words, there are a total of seven distinct hues that make up visible light. One of these hues is blue light. (Just take a look at a rainbow; it has seven different hues.)
The human eye has its limits, as you may know. Only a small portion of the electromagnetic spectrum of light, with wavelengths between 400n and 750nn, may be seen by it.
The first region of the visible spectrum is made up of blue light, which has a wavelength of around 400 nm. More energy is contained in shorter wavelengths than longer ones. In other words, compared to other hues in the spectrum that are visible to the human eye, blue light contains greater energy per photon.
So, is UV light and blue light the same thing?
No, they're unique.
While each of these are present in solar light, their effects on our eyes and bodies are distinct. UV photons have wavelengths between 100nn and 400nn, thus humans cannot see them. They have a high energy since their wavelengths are so short. They thus inflict far greater damage, including skin burns.
We can perceive blue light, unlike UV light. It may easily enter the retina and harm the retina's photochemical cells. This simply implies that blue light is bad for your retina.
Regular sunglasses provide effective UV protection. However, they don't do much to shield us from blue light. However, if you must go outside in the sun, be sure to use sunglasses to shield your eyes from UV radiation that might hurt them.
What Are the Main Artificial Blue Light Sources?
Blue light is present in the daytime, as was previously stated. Blue light is emitted by several artificial sources, including electronic equipment, LED lighting, digital displays, and fluorescent lighting screens. This implies that even if you spend no time using a screen, you will still be exposed to blue light, but there is a distinction between blue light that is produced artificially and blue light that is produced naturally.
Blue light from the sun is not hazardous. In actuality, both our physical and emotional wellbeing depend on natural sunshine. Reduced sunshine throughout the winter, according to research, may contribute to seasonal affective disorder (SAD).
Our circadian rhythms, the internal biological clock that controls the human sleep-wake cycle, depend heavily on blue light from the sun to function properly. The blue light from the sun also increases our alertness and focus. In conclusion, blue light is healthy for humans.
However, a study from Harvard Medical School found that blue light from screens might disrupt our sleep pattern. There are several sources that produce artificial blue light, including:
