Svo hvernig mikið do þú veist um the uppbyggingar meginreglur af hugsandi vesti?

Time can be traced back to the 1920s, when people discovered that cats' eyes could emit light at night, so even black cats in the dark could be discovered through their bright eyes. So people began to study reflective materials.
In 1950, Chinese scientist Dr. Dong Qifang developed directional glass bead. Glass bead are made of silicate. In addition to good chemical stability, mechanical strength and electrical insulation, the more important feature is that they can reflect light back. The principle of retroreflection is unique because it can reflect light according to the original path without angular deflection.
Glass bead reflective material came into being. Millions of high refractive index glass bead are even distributed on the substrate, about 3/4 of the diameter of the wool. The surface of the second half of the bead is coated with a metal reflective layer.
When light shines on the surface of the product, it is reflected onto the light source through the principle of retroreflection, which can greatly improve the visibility of dark light and nighttime environments, and has good eye-catching, warning, and safety effects.
It is sérstaklega mikilvægt að klæðast vinna föt made of reflective materials to provide eye-catching warning effects in road construction, nighttime travel, outdoor activities, help and rescue, and volunteer activities.
Reflective vests can effectively highlight the wearer's sense of presence, avoid safety accidents caused by light, and enable others to quickly and promptly notice themselves.