eco-friendly exit signs? Answered
Hey, I´ve been reading a lot about green technology lately and while doing it I came across something that really surprised me - nuclear powered exit signs. I had already known that both cars and trains, for example, can be nuclear powered but I didn´t realize that an exit sign can use no electricity, even when it´s self luminous. Apparently it doesn´t require any wiring or batteries so I started thinking how I could make an exit sign myself. Btw, does anybody know anything about the regulations as far as the material used in fire exit signs is concerned?