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Composite and Prime numbers explained [Video]
posted April 4 2012 6:27.24 by Giorgos Lazaridis




I think i really like this channel Khan Academy! They have a huge set of very interesting videos (good over 3000), and i wish i see them all one day. In this video they explain the prime...

[Link: Khan Academy]
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Tags: geometry/mathematics   cool site   research   insane   trick   science   how to   how it works   theory/tutorial   


It is amazing to find out how 3D glasses work! [Video]
posted April 2 2012 5:20.14 by Giorgos Lazaridis




There is one little problem with technology: Man cannot follow! I mean, it would be nice for technology to have a "follow" button, but this is not the case. Therefore, i really appreciate...

[Link: Sixty Symbols]
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Tags: 3D media   cool gadget   inventions   physics   science   people with talent   new materials   how is made   theory/tutorial   how it works   






Post you hacks and mods in pcbheaven [Announcement]
posted January 25 2012 18:30.30 by Giorgos Lazaridis




Back in November, I posted a BLOG entry asking if there are people who want to post their own projects in pcbheaven, and I got positive replies. So I began building the on-line editor...

[Link: pcbheaven]
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Tags: electronic project   tips   geek   creative   articles   theory/tutorial   how it works   how to   how is made   


This optical illusion won't work in front of your friends [Video]
posted January 11 2012 10:08.57 by Giorgos Lazaridis




Youtube user Brusspup performs another optical illusion in front of the camera. Let's see if you can figure out how it works, before you see all the video...

[Link: Brusspup]
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Tags: illusion   how it works   crazy photo/video   trick   


Learn how to pick locks from a competitive lockpicker [Video]
posted December 8 2011 5:59.14 by Giorgos Lazaridis




I remember when i was a child how much i was fascinated with locks. I tried several times to hack them -most times i failed-. If Schuyler Towne had published this video some 20 years...

[Link: Schuyler Towne]
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Tags: crazy hack   how to   crazy photo/video   people with talent   how it works   theory/tutorial   tools   






About Ozone and Chlorofluorocarbon
posted October 5 2011 13:59.17 by Giorgos Lazaridis




Professor Martyn Poliakof from Periodic Videos explains what ozone (O3) is and how it's made, why we need it, and how aerosols and other products which use chlorofluorocarbons react with...

[Link: Periodic Table]
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Tags: chemistry   science   health & nature   green   theory/tutorial   how it works   


PS/2 Keyboard Interface Tutorial [Video]
posted September 26 2011 10:02.45 by Giorgos Lazaridis




Chris from Pyroelectro uploaded a new interesting electronic tutorial. In his pages he explains how can someone interface a PS/2 keyboard to a PIC18F microcontroller, with a short...

[Link: pyroelectro]
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Tags: electronic project   pic   microcontroller   articles   theory/tutorial   communication protocols   how it works   pc related   


Inductive spiking and how a diode can save your circuits [Video]
posted September 22 2011 20:27.14 by Giorgos Lazaridis




Get any circuit with an inductive load such as a solenoid or a relay, and you will probably notice that the designer has put a diode across the coil... You may have heard this diode...

[Link: Afrotech]
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Tags: articles   theory/tutorial   how it works   






This is what you will find inside a 7-seg LED
posted September 15 2011 19:47.33 by Giorgos Lazaridis




Everyone! Leave all the cutting tools, knives scissors and blades on the bench, and give a chance to this 7-segment LED display that you are about to chop in two to see what is inside...

[Link: engineersgarage]
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Tags: led   7-seg led   theory/tutorial   how it works   crazy hack   









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