Despite criticism and early technical failures, the taming of liquid hydrogen proved to be one of NASA's most significant technical accomplishments. . . . Hydrogen -- a light and extremely powerful rocket propellant -- has the lowest molecular weight of any known substance and burns with extreme intensity (5,500Â°F).
The Solar Eclipse/Welding Glasses offered at myeyewear2go are ideally suited to any task or situation that involves eye-damaging light, including welding, solar eclipse viewing, and the viewing of direct sunlight. The green athermal shade 14 glass lenses utilized in these frames block over 99% of UV light and 97% of Infrared Radiation.
arc welding blindness. Anyone who does any welding or is watching someone do welding needs to wear a welding helmet. There are cases when it is not absolutely necessary. For example, thinking getting flashed by MIG welding on a sunny day is not too bad. The reason a helmet is necessary is because of the insanely bright light given off by welding. Without taking safety precautions, this light can literally burn the insides of your eyes and cause temporary or permanent blindness. Part of the reason is that particularly in dark places, the eye cannot adjust to the change in brightness fast enough to prevent damage.