Glow-in-the-Dark head protection great for the mining industry,
ship yards, underground utilities, and night highway construction.
Q: What causes the Glo-Mega to glow?
A: The glow is caused by photoluminescence, commonly referred to as glow-in-the-dark. The materials used in the Glo-Mega are nothing at all like the glow-in-the-dark materials of several years ago. They charge quickly and glow much brighter and much longer than the glow-in-the-dark items you may remember having as a child.
Q: How long does it take to charge the Glo-Mega?
A: Charging for 10 to 20 minutes in sunlight would be excellent to produce a strong long lasting glow. A half hour in bright fluorescent light would be very good. Even 20 minutes near a 40 watt incandescent bulb will generate a significant glow.
Q: How brightly does the Glo-Mega glow?
A: In intermediate levels of lighting, the Glo-Mega takes on a greenish color as the glow competes with the light from its surroundings. In dark conditions, the Glo-Mega’s glow has been measured at 1220 mcd/m2 immediately after charging and, after ten minutes was still 45 times as bright as required by ASTM 2073 for emergency signage.
Q: How long can the glow be seen?
A: To eyes accustomed to the dark, the glow can be seen for several days or even weeks after a suitable charge.
Q: How does the after-glow of the Glo-Mega fade?
A: The fading begins as soon as the source of charging is removed – faster at first, then slowing over a long period of time. For a number of hours, this fading is partially offset by a dramatic increase in the sensitivity of the eye to see light.
Q: What is the useful life of the product?
A: The Glo-Mega has the normal life span of a molded polyethylene safety helmet. The photo luminescent properties however, should last almost indefinitely.