JessiccaFact: The Blue Light
October 14th 2006 08:36
Previously I have posted about Biological Clock and how sunlight – specifically blue light, helps jet lag complications.
About Blue Light
Sunlight actually contains all the colours of the rainbow, gradations on red, yellow, green, and blue light. The different colours possess different wavelengths. Blue light waves are short and travel fast. One of the reason why the sky is usually blue it is because when light from the sun meets our oxygen-rich atmosphere, oxygen molecules scatter the shorter wavelengths more easily than the longer ones. This makes blue light and oxygen a good "match," you might say. So, on sunny days when the sky is blue, it's because particles in the air scatter blue light from the sun better than they scatter the other colours.
The good and bad of Blue Light
While blue light may be able to help jet lag victims to reset their biological clocks, over exposure of blue light can also brings the bad side of it – insomnia.
There has been a research towards teenagers who expose themselves to long hours in front of the computer screen have the trouble waking up the next day, because those screens are rich in blue emissions and so suggest the presence of morning when a person's biological clock should be registering that it's time to sleep.
How to overcome over exposure of Blue Light? With Yellow Light
There has been some research and therapy of yellow light to help school children to tune to their biological clock so that they will get the right amount of sleep and enable them to go to school on time.
The research results suggest that yellow light can blunt the body clock's response to blue light. When both blue and yellow are present, equal intensities of the two cancel each other.
Through the Yellow-light-treatment suggestions of wearing yellow goggles that block out blue hues might enable teens that suffers insomnia to reach class on time. Teens are also suggested to wear yellow glasses late at night while doing homework at computer screens, and the result has improved their insomnia condition.
Article is extracted and compiled from: sciencenews.org, wondertime.go.com
About Blue Light
Sunlight actually contains all the colours of the rainbow, gradations on red, yellow, green, and blue light. The different colours possess different wavelengths. Blue light waves are short and travel fast. One of the reason why the sky is usually blue it is because when light from the sun meets our oxygen-rich atmosphere, oxygen molecules scatter the shorter wavelengths more easily than the longer ones. This makes blue light and oxygen a good "match," you might say. So, on sunny days when the sky is blue, it's because particles in the air scatter blue light from the sun better than they scatter the other colours.
The good and bad of Blue Light
While blue light may be able to help jet lag victims to reset their biological clocks, over exposure of blue light can also brings the bad side of it – insomnia.
There has been a research towards teenagers who expose themselves to long hours in front of the computer screen have the trouble waking up the next day, because those screens are rich in blue emissions and so suggest the presence of morning when a person's biological clock should be registering that it's time to sleep.
How to overcome over exposure of Blue Light? With Yellow Light
There has been some research and therapy of yellow light to help school children to tune to their biological clock so that they will get the right amount of sleep and enable them to go to school on time.
The research results suggest that yellow light can blunt the body clock's response to blue light. When both blue and yellow are present, equal intensities of the two cancel each other.
Through the Yellow-light-treatment suggestions of wearing yellow goggles that block out blue hues might enable teens that suffers insomnia to reach class on time. Teens are also suggested to wear yellow glasses late at night while doing homework at computer screens, and the result has improved their insomnia condition.
Article is extracted and compiled from: sciencenews.org, wondertime.go.com
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