Wear Your Shades Day also emphasises the importance of protecting your eyes. Globally, in at least 1 billion of 2.2 billion cases, wearing sunglasses to protect against the sun’s harmful UV rays can ...
INVENTIONS THAT WILL SURPRISE YOU Subscribe my channel to get know all news! ► BONDIC EVO Bondic is a compact device that allows you to repair plastic parts in seconds using ultraviolet radiation.
* Most UVA blacklights come in fluorescent form. A small amount of mercury added to the tube emits photons in the UV range, but a special coating makes it visible again. Enough light still gets ...