Difference between revisions of "Alarm Clock"

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(Blue Light)
(Blue Light)
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It seems like as far as the eyes are concerned that some of the commercial products that are advertised to help eye health and such are just wrong.  It has been shown that the health of yourself and if you have any eye diseases effect how this light effects you.
 
It seems like as far as the eyes are concerned that some of the commercial products that are advertised to help eye health and such are just wrong.  It has been shown that the health of yourself and if you have any eye diseases effect how this light effects you.
  
"Include a warning if the product presents a potential blue light hazard for people with retinal disease."
+
===http://www.mdsupport.org/library/hazard.html===
  
"A growing body of research shows that the shorter electromagnetic waves of the light spectrum from blue (also called near-UV) through ultraviolet may be harmful."
+
* "Include a warning if the product presents a potential blue light hazard for people with retinal disease."
 +
 
 +
* "A growing body of research shows that the shorter electromagnetic waves of the light spectrum from blue (also called near-UV) through ultraviolet may be harmful."
  
 
* blue light wavelengths (470nm - 400nm)
 
* blue light wavelengths (470nm - 400nm)
  
"According to the CVRL Color & Vision database,63 light waves measuring approximately 470nm to 400nm in length are seen as the color blue. The blue bands of the visible light spectrum are adjacent to the invisible band of ultraviolet (UV) light. UV is located on the short wave, high frequency end of the visible light spectrum, just out of sight past the color violet. It is divided into three wavelengths called UV-A , UV-B, and UV-C. The effects of UV-C (100nm-290nm) are negligible, as the waves are so short they are filtered by the atmosphere before reaching the eyes. UV-A (320nm-400nm) and UV-B (290nm-320nm) are responsible for damaging material, skin, and eyes, with UV-B getting most of the blame. "
+
* "According to the CVRL Color & Vision database,63 light waves measuring approximately 470nm to 400nm in length are seen as the color blue. The blue bands of the visible light spectrum are adjacent to the invisible band of ultraviolet (UV) light. UV is located on the short wave, high frequency end of the visible light spectrum, just out of sight past the color violet. It is divided into three wavelengths called UV-A , UV-B, and UV-C. The effects of UV-C (100nm-290nm) are negligible, as the waves are so short they are filtered by the atmosphere before reaching the eyes. UV-A (320nm-400nm) and UV-B (290nm-320nm) are responsible for damaging material, skin, and eyes, with UV-B getting most of the blame. "
 +
 
 +
* "Blue light is an important element in "natural" lighting, and it may also contribute to psychological health. Research, however, shows that high illumination levels of blue light can be toxic to cellular structures, test animals, and human fetal retinas."
 +
 
 +
* "As is evident in the photographs below, worst contrast (i.e. highest blue content) is provided by fluorescent lamps with ≥3000K color temperatures. Poor color replication also occurs with any lamp with a color temperature of ≤3000. Best contrast (i.e. whitest whites and blackest blacks) and best color replication in this comparison is provided by the 2600K ~ 3400K white LED light source. "
 +
 
 +
* "Incandescent and LED lamps are capable of several times the intensity of fluorescent lamps, and there is little danger of reaching hazardous blue light levels. If the intensities of the fluorescent lamps were increased to match the obviously stronger output of the others, the amount of blue light would also increase, possibly compounding any hazard to the retina. The only way to safely increase the intensities of fluorescent lamps to match that of incandescent and halogen lamps would be to significantly decrease the blue and UV wavelengths. Such lamps, however, could then no longer be called full-spectrum or daylight."
 +
 
 +
===http://en.wikipedia.org/wiki/Light_therapy#Mood_and_sleep_related===
  
"Blue light is an important element in "natural" lighting, and it may also contribute to psychological health. Research, however, shows that high illumination levels of blue light can be toxic to cellular structures, test animals, and human fetal retinas."
+
While full sunlight is preferred for seasonal affective disorder (SAD)[citation needed], light boxes may be effective for the treatment of the condition. Light boxes for seasonal affective disorder are designed to filter out most UV light, which can cause eye and skin damage.[11] The Mayo Clinic Website states that light therapy is of proven effectiveness for Seasonal Affective Disorder [12] and light therapy is seen as the main form of treatment for SAD. Controlled-trial comparisons with antidepressants show equal effectiveness, with less expense and more rapid onset of therapeutic benefit, though a minority of patients may not respond to it.[13] Direct sunlight, reflected into the windows of a home or office by a computer-controlled mirror device called a heliostat, has also been used as a type of light therapy for the treatment of SAD.[14][15]
  
"As is evident in the photographs below, worst contrast (i.e. highest blue content) is provided by fluorescent lamps with ≥3000K color temperatures. Poor color replication also occurs with any lamp with a color temperature of ≤3000. Best contrast (i.e. whitest whites and blackest blacks) and best color replication in this comparison is provided by the 2600K ~ 3400K white LED light source. "
+
It is possible that response to light therapy for SAD could be season dependent.[16]
  
"Incandescent and LED lamps are capable of several times the intensity of fluorescent lamps, and there is little danger of reaching hazardous blue light levels. If the intensities of the fluorescent lamps were increased to match the obviously stronger output of the others, the amount of blue light would also increase, possibly compounding any hazard to the retina. The only way to safely increase the intensities of fluorescent lamps to match that of incandescent and halogen lamps would be to significantly decrease the blue and UV wavelengths. Such lamps, however, could then no longer be called full-spectrum or daylight."
+
===http://en.wikipedia.org/wiki/Delayed_sleep_phase_syndrome===
  
  
  
 
===Notes===
 
===Notes===
http://www.mdsupport.org/library/hazard.html
 

Revision as of 07:48, 13 March 2012

The objective is to reinvent the alarm clock into something that is more natural and effective. I do not know about you but the noise that my alarm clock makes is horrid. It is the worst way to wake up someone. Something like that jerks a person out of bed. I can feel my heart seize/jump when I am awaken by a loud noise and I think that it effects my attitude at the beginning of the day. I know other ways exist and in the end I think this total solution should integrate with an entire home automation system.

Lighting

I have seen various studies/displays on how effective light is at waking up a person and/or changing the metabolic systems of a person. The sun has been used to wake up humans for a long time. As time moved on we found many sources of light. Fire, candles, electric, etc and as a species we have benefited from the extra time we had to now improve ourselves and the things around us. One of the more recent things that I have heard about is blue light and lighting in general. The sun effects various means and processes that generate some of the regulating chemicals in our body.

Blue Light

One such process that has been found was a coloration between blue light and its absorption into the eye. I have heard both positive and negative effects from the studies on blue light and its effectiveness in waking us up and regulating our sleep schedules. Light in general has many effects on the body and has been shown to do different things to the body under its exposure.

It seems like as far as the eyes are concerned that some of the commercial products that are advertised to help eye health and such are just wrong. It has been shown that the health of yourself and if you have any eye diseases effect how this light effects you.

http://www.mdsupport.org/library/hazard.html

  • "Include a warning if the product presents a potential blue light hazard for people with retinal disease."
  • "A growing body of research shows that the shorter electromagnetic waves of the light spectrum from blue (also called near-UV) through ultraviolet may be harmful."
  • blue light wavelengths (470nm - 400nm)
  • "According to the CVRL Color & Vision database,63 light waves measuring approximately 470nm to 400nm in length are seen as the color blue. The blue bands of the visible light spectrum are adjacent to the invisible band of ultraviolet (UV) light. UV is located on the short wave, high frequency end of the visible light spectrum, just out of sight past the color violet. It is divided into three wavelengths called UV-A , UV-B, and UV-C. The effects of UV-C (100nm-290nm) are negligible, as the waves are so short they are filtered by the atmosphere before reaching the eyes. UV-A (320nm-400nm) and UV-B (290nm-320nm) are responsible for damaging material, skin, and eyes, with UV-B getting most of the blame. "
  • "Blue light is an important element in "natural" lighting, and it may also contribute to psychological health. Research, however, shows that high illumination levels of blue light can be toxic to cellular structures, test animals, and human fetal retinas."
  • "As is evident in the photographs below, worst contrast (i.e. highest blue content) is provided by fluorescent lamps with ≥3000K color temperatures. Poor color replication also occurs with any lamp with a color temperature of ≤3000. Best contrast (i.e. whitest whites and blackest blacks) and best color replication in this comparison is provided by the 2600K ~ 3400K white LED light source. "
  • "Incandescent and LED lamps are capable of several times the intensity of fluorescent lamps, and there is little danger of reaching hazardous blue light levels. If the intensities of the fluorescent lamps were increased to match the obviously stronger output of the others, the amount of blue light would also increase, possibly compounding any hazard to the retina. The only way to safely increase the intensities of fluorescent lamps to match that of incandescent and halogen lamps would be to significantly decrease the blue and UV wavelengths. Such lamps, however, could then no longer be called full-spectrum or daylight."

http://en.wikipedia.org/wiki/Light_therapy#Mood_and_sleep_related

While full sunlight is preferred for seasonal affective disorder (SAD)[citation needed], light boxes may be effective for the treatment of the condition. Light boxes for seasonal affective disorder are designed to filter out most UV light, which can cause eye and skin damage.[11] The Mayo Clinic Website states that light therapy is of proven effectiveness for Seasonal Affective Disorder [12] and light therapy is seen as the main form of treatment for SAD. Controlled-trial comparisons with antidepressants show equal effectiveness, with less expense and more rapid onset of therapeutic benefit, though a minority of patients may not respond to it.[13] Direct sunlight, reflected into the windows of a home or office by a computer-controlled mirror device called a heliostat, has also been used as a type of light therapy for the treatment of SAD.[14][15]

It is possible that response to light therapy for SAD could be season dependent.[16]

http://en.wikipedia.org/wiki/Delayed_sleep_phase_syndrome

Notes