On 5/17/2012 10:53 AM, mike wrote:
I want to look at the eclipse this weekend.
Everybody says a #14 welding shade is good.
I don't have one.

So, how do the numbers stack up when you use 2?
I'm guessing it's not linear, so 7+7 doesn't = 14???

What's the math for stacking welding shades?

Thanks, mike
Turns out that the weather didn't cooperate.
I found the whole thing very boring. Never found any
images online that showed anything more than a smooth
crescent.
I was expecting some corona or something interesting.