By bnitz on Sep 20, 2005
I'm gradually eliminating some questions which have puzzled me since I was old enough to ask my dad (a science teacher), "How come?"
Q:Why is the sky blue?
A:Preferential Raleigh scattering of blue light.
Q:Why does an old neon night light only light up when another light illuminates it?
A:The photoelectric effect.
Q:How many volts are produced when road-salt induces corrosion of a 1969 rambler?
A:0.5 Volts. (I haven't yet found a practical use for this energy.)
Q:Why do some of my Northern light photos have rings in the center of the frame similar to the ones in this photo.
Here is a new one.
Q:When we purchased new bubble solution for my daughter's birthday party, why did this approximately 4 centimeter bubble last so long? (Her other bubble solution couldn't make a bubble that lasted long enough to leave the wand.)