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 Laser Pointers "True" DX 30mW Reviewed - NOT TRUE NEWWISH

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12-10-2007, 03:39 PM #17
 Chris. Guest Posts: n/a
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

Yep. Do/have you taken physics at some point?

Bear in mind that my initial calculations assumed a 5mm^2 dot size though.

Even more interestingly, treating the sun as a point source (quite accurate):
Sun's power at earths surface: ~ 1000W/m^2
Maximum distance from earth: ~ 152 million km
Radius of earth: ~ 6 378.1 km
Radius of our sun: ~695 500 km
Distance between the earth and the sun: 1.51(1.512986219)x10^11m
I = P/4pir^2, P = 1000(4pi(1.51x10^11)^2)
Power of the sun = 2.87x10^26W!!!

Supprising how accurate this is, the 'real value' is 3.6×10^26 W (Our model ignores atmospheric absorption)

12-10-2007, 05:11 PM #18
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

Quote:
 Originally Posted by BlueFusion interesting thing... if you managed to get 68 centimetres away from a 1,500 watt globe, it's the same as 30mW. Or 68cm from a 50 watt globe is the same as 1mW. Amazing how much distance changes it.
That would mean that the globe actually outputs 50W, but I don't think a 50W lightbulb outpus exactly 50W

12-10-2007, 05:34 PM #19
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

Quote:
 Originally Posted by Switch [quote author=BlueFusion link=1193403763/15#15 date=1197296725]interesting thing... if you managed to get 68 centimetres away from a 1,500 watt globe, it's the same as 30mW. Or 68cm from a 50 watt globe is the same as 1mW. Amazing how much distance changes it.
That would mean that the globe actually outputs 50W, but I don't think a 50W lightbulb outpus exactly 50W
[/quote]

Who said anything about a 50W bulb..

12-10-2007, 09:01 PM #20
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stackingmont
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

k thanks! it may be why lasers are so dangerous, but also why they're so awesome ;D

12-12-2007, 10:46 AM #21
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BlueFusion
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

Quote:
 Originally Posted by Chris. [quote author=Switch link=1193403763/15#17 date=1197310300][quote author=BlueFusion link=1193403763/15#15 date=1197296725]interesting thing... if you managed to get 68 centimetres away from a 1,500 watt globe, it's the same as 30mW. Or 68cm from a 50 watt globe is the same as 1mW. Amazing how much distance changes it.
That would mean that the globe actually outputs 50W, but I don't think a 50W lightbulb outpus exactly 50W
[/quote]

Who said anything about a 50W bulb..[/quote]

O_o I did, read the quote

And yes I do take physics, but simple maths is all that's needed. area, multiplication etc, a little common sense i tihnk. I had no idea how to calculate the power of light per surface area but I worked it out logically. :P

12-14-2007, 06:23 PM #22
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Phazonx
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

Will a newwish laser have some sort of new wish logo on it? Where?

01-08-2008, 11:15 PM #23
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jumpbutt
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

i apreaciate all you guys are saying. igot the optotronics 30mw. i knew it was dangerous butt s%\$# now im afraid to use it without protection, this is my first green and it is impresive, pops balloons &quot;black&quot;

01-09-2008, 12:29 AM #24
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pseudonomen137
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

Quote:
 Originally Posted by BlueFusion interesting thing... if you managed to get 68 centimetres away from a 1,500 watt globe, it's the same as 30mW. Or 68cm from a 50 watt globe is the same as 1mW. Amazing how much distance changes it.
sorry, but how did you arrive at this conclusion? You mention a &quot;you&quot; without stating the absorbing area of &quot;you&quot;, so I don't see how your statement is even either right or wrong. Please let me know if I'm missing something here

03-02-2008, 06:48 PM #25
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clwatkins10
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

i wonder y some of them arent actual new wish

03-02-2008, 10:00 PM #26
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iewed
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Re: "True" DX 30mW Reviewed - NOT TRUE NEWWISH

I have this laser, but a direct hit in the eye won't blind you, or cause short-term which is good to know. I can't say anything on long term though.
When I got this laser, one of my friends wanted to see it, he's academically below average, but now I know he's intellectually below average, VERY below average. When I handed it to him, the first thing I told him was to be careful, it can blind you. And of course he shines it right in his eye for about 10 seconds, while running away from me. I asked him to check his peripheral vision, and he said he was fine. That was about 2 weeks ago, and he still says his vision is fine. But from now on I'm not letting anyone with a GPA below 3.0 use a laser.

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