People are paranoid about the mercury present in compact fluorescent lamps but there is several times more mercury in an old thermostat I have laying around than there is in all the fluorescent lamps in my house combined. Another thing with which I no longer have was a pair of "LA Lights" shoes from when I was in first or second grade. The early LA Lights (prior to 1994) used a mercury tilt switch containing roughly half a gram of mercury in each shoe which completed the circuit to the LEDs whenever one walked. Although very reliable, such mercury tilt switches presented problems with disposal once the shoes wore out. www.newmoa.org Current light up sneakers (such as the ones by Sketchers) now use a spring and weight type mechanism
Promotions Caribou Sorel Boots Buying Vicks Vapor Rub Baby Bissell Proheat Carpet Cleaners Coupon
No comments:
Post a Comment