Rich Travsky wrote:
> Mario Petrinovich wrote:
>> Pine knots are full of resin. It wouldn't be hard tu imagine a
>>monkey breaking off a branch of pine, exposing resin to the sun. If that
>>monkey was in water, the sun can magnify through water drops, and ignite
>>resin. -- Mario
> "in water"?
> Let me see if I visualize this as you do:
> Sun -> water -> branch with resin
> So, the branch is under water? And it's supposed to ignite?
His theory has to do with a lens effect from the water droplets and the
sun. I wonder if it was ever done with say, a quartz crystal or some
other naturally occurring mineral?
I have tried it with my glasses, but it did not work. Of course, my
glasses are concave lenses, while a magnifying glass is convex. A water
droplet, being spherical, might not have the same focal properties, but
I haven't studied it.
It does seem rather complex for a monkey, so it would have to be
accidental, and probably not a repeatable experiment.