– ensuring adjust the light intensity and distance of use to reduce the risk of glare,
– favoring multi-LED lamps or with a dispersion lens
– avoid using sources rich in color lights blue in places frequented by children (ie: choose in this case the yellow LEDs light bulbs).
Good to know :
The color temperature
Expressed in Kelvin (K), it provides information on the color (or color) of the light scattered by the light bulb.
The average filament lamps is around 2700 K, and that of halogen around 3000 K.
-Up to 3300 K is defined as the light “hot”,
-Beyond 3300 K, the light is called “neutral”
-from 5300 K, it becomes “cold” and approximates daylight.
It is best to install for home use LED bulbs with a color temperature below 3300 K. Check ebicyclelights for LED bike headlamps.
A video runs on the Internet since 2008; a science journalist nickname wants to demonstrate the harmful radiations emitted by a compact fluorescent bulb, measured using a device capable of measuring electromagnetic fields.
Unfortunately, this is the type of alarmist not very honest demonstration, in the sense that:
-what gets measured does not correspond in any way to the actual use that we have (which uses a bulb having the head a few centimeters ?).
-That we have in our home environment a lot of other sources much émitives (cell phones, cordless phones, WiFi, microwave, electromagnetic stove, internal power lines, audio-visual equipment, neon lamp which are equipped with the same type of ballast …)
the fact remains that :
-ballasts of these CFLs produce low frequency (50 Hz) and radio frequency.
-These bulbs contain mercury vapors , toxic in case of breakage, and in absolute terms, should not be used.
Ultimately, avoid the use of these bulbs because :
-they do not deliver a pleasant light
-they give their full power only after a “long time”
-they have a lifespan very short (usually less than 1000 hours) and in any case well below what is promised on the packaging.
So, then, go to LED bulbs (good), which consume 2 times less than the compact fluorescent (between 8 to 10 times less than an incandescent bulb) and last between 30 to 50 times longer.