Cool nerdy stuff thread

Post up interesting Movies and Videos on any subject. No porn!
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Re: Cool nerdy stuff thread

Post by fixxervi6 » Wed Feb 27, 2013 10:08 am

Oreo cookie separator machine

http://io9.com/goofballery/
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Re: Cool nerdy stuff thread

Post by fixxervi6 » Wed Nov 20, 2013 1:07 pm

[youtubell][/youtubell]
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Re: Cool nerdy stuff thread

Post by shilka99 » Thu Nov 21, 2013 11:31 am



I need to find out if this exports to autocad files. If so it will save me a lot of time and iterations
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Re: Cool nerdy stuff thread

Post by DarcShadow » Thu Nov 21, 2013 12:08 pm

very cool
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Re: Cool nerdy stuff thread

Post by fixxervi6 » Mon May 26, 2014 9:26 pm

" onclick="window.open(this.href);return false;
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Re: Cool nerdy stuff thread

Post by fixxervi6 » Tue May 27, 2014 4:02 pm

[youtubell][/youtubell]
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Re: Cool nerdy stuff thread

Post by fixxervi6 » Tue May 27, 2014 9:18 pm

For DD

" onclick="window.open(this.href);return false;

The problem people have is they perceive "Time" as a constant when it's not, the speed of light is the constant not time, when you think about it that way it's easier to understand.
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Re: Cool nerdy stuff thread

Post by DarcShadow » Wed May 28, 2014 7:00 am

Drop the s from the HTTP and the YouTubeLL button will work for you.

[youtubell][/youtubell]
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Re: Cool nerdy stuff thread

Post by DemonDuck » Thu May 29, 2014 6:54 am

Even after watching that I still have issues with it. Take for instance the ships. The laser they shoot would take 12 seconds to hit the same point for both ships. One ship will simply be at a different spot at the end of that 12 seconds. The speed of the laser didn't change but the speed of the ship did. Would the moving ship report a different speed for the laser they shot? Depends on how they measure it. If they are giving the speed of the laser in without taking into account their own speed then yes they would report it being half as fast. If they measure the actual speed then no they would not. Light would not have its speed changed by the speed of the object that "launched" it like say a bullet in space. I am not saying that I am smarter than the people who made the video but I seriously think they lost something in translation.
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Re: Cool nerdy stuff thread

Post by DarcShadow » Thu May 29, 2014 7:04 am

What the video was trying to show, and didn't do it very well in my opption. The speed of light relative to the moving ship is half that of the ship sitting still. So relative to the moving ship the speed of light is slower. However, since the speed of light is constant then time on the moving ship must be moving slower.

The problem with the example is you can "see" that one ship is moving. You have to put yourself in the ship and forget that you are moving for the example to work.
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Re: Cool nerdy stuff thread

Post by DemonDuck » Thu May 29, 2014 7:17 am

Now that I do understand in a way. The perception of time on the moving ship relative to the ship not moving would be slower but it would not actually be slower. This is all because the light being used to tell the time. For instance to a person with their eyes open it would seem time was going slower because the light they are seeing with their eyes comes in at a slower rate because your traveling at half the speed of that light your looking at..... however in measurement the time would still be the same. The interesting thing is that if the stopped ship was to report the position of the moving ship using sight they would be off by half the speed the moving ship was traveling. In any case the only thing that changes is your position relative to that specific light because the light is always moving at the same speed but you are not.

I am not good at explaining stuff so my whole little thing up there might make no sense to anyone but me lol.
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Re: Cool nerdy stuff thread

Post by DarcShadow » Mon Jun 09, 2014 10:59 am

Black holes may actually be a portal to another universe
http://www.newscientist.com/article/dn2 ... holes.html" onclick="window.open(this.href);return false;
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Re: Cool nerdy stuff thread

Post by Stardog82 » Tue Jun 10, 2014 2:08 pm

Black holes don't exist. They're a trick by the devil to make you divert your eyes from the Lord
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Re: Cool nerdy stuff thread

Post by DemonDuck » Wed Jun 11, 2014 12:16 am

Interesting read.
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Re: Cool nerdy stuff thread

Post by WillK675 » Mon Oct 13, 2014 4:05 pm

A time lapse photo done in the spirit of Einstein's theory of relativity.

Image

Here is how the photographer describes it.
Julian Tryba wrote: Traditional time-lapses are constrained by the idea that there is a single universal clock. In the spirit of Einstein's relativity theory, layer-lapses assign distinct clocks to any number of objects or regions in a scene. Each of these clocks may start at any point in time, and tick at any rate. The result is a visual time dilation effect known as layer-lapse.
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Re: Cool nerdy stuff thread

Post by DarcShadow » Mon Oct 13, 2014 4:10 pm

ok, that's weird
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Re: Cool nerdy stuff thread

Post by shilka99 » Wed Nov 19, 2014 5:29 pm

If i'd seen one of these when I was in school I would have done much better in math...

[youtube]http://youtu.be/NAsM30MAHLg[/youtube]
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Re: Cool nerdy stuff thread

Post by shilka99 » Tue Jan 06, 2015 5:40 pm

I'll be doing this shortly:
[youtube]http://youtu.be/RBF8zUjAArE[/youtube]
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Re: Cool nerdy stuff thread

Post by dufremle » Tue Jan 06, 2015 8:34 pm

That's interesting
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Re: Cool nerdy stuff thread

Post by shilka99 » Tue Jan 06, 2015 8:58 pm

I have over 100lbs of aluminum offcuts and busted engine cases in a cabinet. I'm going to make a furnace about 4 times larger than this one and I'll use it every time the scrap gets out of control again.
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Re: Cool nerdy stuff thread

Post by JTChiTown » Tue Jan 06, 2015 9:33 pm

That is pretty cool. Can you use that aluminum for anything, or are you just melting down for a more manageable scrap pile?
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Re: Cool nerdy stuff thread

Post by WillK675 » Wed Jan 07, 2015 1:48 pm

solid aluminum ingots bring more $ when recycled. Plus easier to recycle the ingot than a motor case.
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Re: Cool nerdy stuff thread

Post by BeautifulDisaster » Fri Jan 09, 2015 9:02 am

That's pretty cool!!
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Re: Cool nerdy stuff thread

Post by shilka99 » Fri Jan 09, 2015 4:15 pm

I'll be recycling the offcuts into larger, usable pieces. That will save me from having to buy more plate as often. I just hope I can keep porosity down as I'm making braking components.
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Re: Cool nerdy stuff thread

Post by fixxervi6 » Fri Jan 09, 2015 4:42 pm

RC30rdr wrote:I'll be recycling the offcuts into larger, usable pieces. That will save me from having to buy more plate as often. I just hope I can keep porosity down as I'm making braking components.
Any concerns around the strength/quality of the re-used metal? I'm sure you'll be mixing different alloys together in the process, creating in the end, an unknown alloy unless of course it's all 100% straight aluminum.
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