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Rational
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Discussion Starter #1
Pretty freaking cool! These are Fresnel Lens from old Big Screen TVs.

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SO COOL!
 

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Garbage Day!
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Yeah, since the invention of the magnifying glass there's been probably a billion or so ants who found out real fast how hot focused sunlight can get... :burn:

I used to engrave things on pieces of wood with a magnifying glass, usually South Park characters (they're easy to draw). You'd need welding goggles with sunglasses underneath, it was so bright.
 

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Garbage Day!
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And all from 93 million miles away. And that's not all that far away, considering how big the universe really is. Boggles the mind thinking about it.
 

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Way cool!!!

Commercial applications?
 
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Garbage Day!
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Way cool!!!

Commercial applications?
Not much. You can do all that with an oxy-acetylene torch that burns hotter. But I have seen solar setups that refract and concentrate the sunlight onto a solar panel, so it's "brighter" and therefore more energy-producing than just straight sun.
 
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Can't we get several blimps holding a huge lens and float around over ISIS?

;)
 

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Cheese?
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It really is amazing that 1.5 m^2 of sunlight offers that much power from 90 million miles away.
 

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Rational
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Discussion Starter #12
It really is amazing that 1.5 m^2 of sunlight offers that much power from 90 million miles away.
Agreed. I was shocked when I saw how much power those lenses had. And you can get them from an old Big Screen TV!

How have you been my friend? It's been a while.
 

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Cheese?
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Agreed. I was shocked when I saw how much power those lenses had. And you can get them from an old Big Screen TV!

How have you been my friend? It's been a while.
Staying woefully out of trouble. I gotta work on that. ;)

Looking forward to an exciting NFL season, after an NBA season that almost caused me to care a little bit (which is a major achievement not seen in a couple decades).
 
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Rational
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Discussion Starter #15
Staying woefully out of trouble. I gotta work on that. ;)

Looking forward to an exciting NFL season, after an NBA season that almost caused me to care a little bit (which is a major achievement not seen in a couple decades).
Oh God, ME TOO! I am SO looking forward to what Kelly does with the 9ers. Most of the news coming from OTAs is very positive. A couple of people lagging behind or slow to catch on, but they're guys who never contributed much anyways.

My father is a life-long Golden State Warriors fan, so you can imagine how much he's loving this season. That GS team is amazing! Really wish my Blazers gave them a 6 or 7 game series in Round 2.

Are you following baseball at all? My Giants are doing alright, despite injuries. I imagine you probably follow the Mariners?
 

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Cheese?
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Oh God, ME TOO! I am SO looking forward to what Kelly does with the 9ers. Most of the news coming from OTAs is very positive. A couple of people lagging behind or slow to catch on, but they're guys who never contributed much anyways.

My father is a life-long Golden State Warriors fan, so you can imagine how much he's loving this season. That GS team is amazing! Really wish my Blazers gave them a 6 or 7 game series in Round 2.

Are you following baseball at all? My Giants are doing alright, despite injuries. I imagine you probably follow the Mariners?
Warriors are insane. Playoffs seemed like they actually had some story/drama. Never been a big NBA fan, but they're really playing basketball, which is a major change. Play rock solid defense, or die.

Not a real baseball fan - got too much living to do for 163 games/season, yo. ;)

But baseball highlights are wonderful, and games like Seattle/San Diego 16-13 the other night (pulled out from SD up 12-1) are again almost enough to get me to pay attention. I think I've mentioned before that I was in college before the Mariners had their first winning season, so I hardly know how to cope with them winning. :)

Be fascinating to see what Chip can do, both this year and over the next couple years. Tough to rebuild in what promises to be a brutal division, with both Seahawks and Cardinals solid candidates to go all the way, and the Rams looking to be dangerous, though.

Also, the sun is crazy powerful. I'm one of those people who will burn to a solid red in half an hour after a long winter with no sunlight. Proved it last weekend.
 
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