The eye protection lamp is not stroboscopic, it is a high frequency flash. The light emitted by this high-frequency flash will be brighter than the light emitted by the general lamp, and it is softer and more stable, giving the person a comfortable feeling in the senses, which seems to alleviate the visual fatigue. But in fact, it will cause some harm to the students' eyes and skin.
Eye protection lamp: high frequency flash of light source seriously deepens myopia
The main selling point of the so-called eye-protection lamp is that there is no stroboscopic light, it will not flash and flash. This is compared with the fluorescent lamp. In order to avoid this feeling of flashing, the eye-protection lamp uses a high-frequency electronic rectifier to draw current. The frequency is adjusted to a few kilohertz or even tens of thousands of hertz, which means that the speed of the light flashes to a few thousand or even tens of thousands of times per second. When the speed of light flashes to tens of thousands of times per second, the reaction of the human eye can no longer keep up with this speed. At this time, there is a feeling that the light does not flash, It is stable.
Normalized Steel Bar is produced by normalizing which is one kind of heat treatment to get even microstructure and better mechanical properties and hardness. Our advantages and more services of normalized steel bar includes:
1) Wide range of diameters from 10mm to 100mm
2) Customized Length from 100mm to 12000mm
3) Good surface roughness: 0.4um to 1.5um
4) Good straightness: 0.5mm/m to 2mm/m
5) Good roundness: 80% of diameter tolerance
6) Diameter tolerance: -0.02mm to -0.06mm/h9, h10, h11
7) Matched further processing: Grinding, polishing, straightening
8) Anti-rusty package
9) Full sets of testing equipment: Surface, Dimenstion. Mechanical properties testing
10) Fast delivery time
Normalized Steel Bar
Round Bar,4140 Round Bar,S355J2 Round Bar,1045 Normalized Steel Properties
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