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.
Welders are protected from this light by wearing a very dark filter that allows them to look safely at the welding arc, enabling them to produce a quality welded seam. The type of welding application determines the correct shade for eye protection. The Occupational Safety and Health Administration (OSHA) regulation 1910.133 contains a guide for choosing the appropriate filter lenses, based on various operations (see Figure 1at the bottom of page).