School ProjectsMostlySunny wibbles, "When I was 11 I got an A for my study of shark nets - mostly because I handed it in cut out in the shape of a shark."
Do people do projects that don't involve google-cut-paste any more? What fine tat have you glued together for teacher?
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chthonic, Thu 13 Aug 2009, 13:36)
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I simplified...... for the story, the salt was actually Potassium Chloride, though table salt worked but not as well, and 500ml of water and 2 tablespoons of this was actually (LOL) the current "limiter". It did actually limit current and would last for about 3 or 4 minutes before you had to replace it as it broke down chemically.
As for eye problems, I never had anything obvious, though who can say 20 years from now, I probally looked directly at the arc for 10-15 minutes all told, and wore absolutely no eye protection, hehe. Thanks for the reminder, I will have to use welder goggles for the next one...
(, Sun 16 Aug 2009, 2:14, 1 reply)
I see; thanks for the clarification.
I was thinking along the lines of short term vision problems, "Arc eye" and suchlike - I think you'd have known at the time if there were any ill-effects. Still, it's always a good idea to protect your eyes.
(, Sun 16 Aug 2009, 2:35, closed)
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