Pierre Abbat wrote: "Mg" is two symbols. If you have 1 Mg Mg, how many flashbulbs could you make?
None. Magnesium-based flashbulb manufacturing is a thing of the past. ;-) Do you remember those 4-in-1 flashbulbs that would rotate 90 degrees after each flash? Flashbulbs were often an indication of the extreme stupidity of those using them. Imagine people at a ball game thinking their little flashbulb would illuminate the whole stadium. I remember seeing a tourist on the observation deck of the Empire State Building using a flashbulb when photographing the view. My attempt to convey the significance of the inverse square law fell upon deaf ears. That was fifty years ago. High school science education hasn't really deteriorated in the last half century. It was already bad. Bill ________________________________ Bill Potts WFP Consulting 1848 Hidden Hills Drive Roseville, CA 95661-5804 Phone: 916 773-3865 Cell: 916 302-7176
