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Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
You could likely do this with a higher voltage capacitor with an ignition coil, but you can use the magneto from a lawn mower engine or other small gasoline engine, wrap around 5-10 turns or wire just somewhere on the iron core (placement apparently does not matter) and discharge a cap into that. I used a 680uf cap and only 12-24 volts, and i could get a one inch spark at least. I used it to ignite my potato cannon.
Also, the magneto's do the exact same thing as ignition coils, so 1 inch sparks will not kill it fast (they spark many thousands of times a minute with a few mm gap from the spark plug).
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
Arcstarter wrote ...
You could likely do this with a higher voltage capacitor with an ignition coil, but you can use the magneto from a lawn mower engine or other small gasoline engine, wrap around 5-10 turns or wire just somewhere on the iron core (placement apparently does not matter) and discharge a cap into that. I used a 680uf cap and only 12-24 volts, and i could get a one inch spark at least. I used it to ignite my potato cannon.
Also, the magneto's do the exact same thing as ignition coils, so 1 inch sparks will not kill it fast (they spark many thousands of times a minute with a few mm gap from the spark plug).
as I said, I would likely use an ignition coil, but the reason I might use the other pulse unit is that I can directly connect to the SCR for a single discharge, or let it run at a controlled number of pulses per second...
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
That is one genuinely gold plated key. Our chemistry prof had a bottle of auric (gold) cyanide in his lab because a grad student got it for free from a lab that closed down. A little bit of electrochemistry later and that key has a thin coating of gold on it. Sadly it won't last too long to wear and tear.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
While the blur is gaussian and can be extrapolated, the blur radius was set beyond the height of the blur area, thus any details will be lost and limited resolution would be available on the (important) vertical axis. I would like to see if it is possible to un-blur a similar image but I hope people respect my privacy and make up their own similar image.
Banned on 3/17/2009. Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
aonomus wrote ...
While the blur is gaussian and can be extrapolated, the blur radius was set beyond the height of the blur area, thus any details will be lost and limited resolution would be available on the (important) vertical axis. I would like to see if it is possible to un-blur a similar image but I hope people respect my privacy and make up their own similar image.
HAHHA are you kidding me? What makes you think someone would go through all the trouble? For all we know that could be the key to your high school gym locker and even if it was your house key, who cares? It's a key not a license plate or bank account. Hey maybe you should get LifeLock® for your key picture, lol.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
aonomus wrote ...
While the blur is gaussian and can be extrapolated, the blur radius was set beyond the height of the blur area, thus any details will be lost and limited resolution would be available on the (important) vertical axis. I would like to see if it is possible to un-blur a similar image but I hope people respect my privacy and make up their own similar image.
even if someone did, they may not necessarily have enough information to make a key... for example, you did not publish the original aspect ration (and images have to be re-sized to get onto boards), there is no reference for scale in any direction (though it might not be too hard to figure out, it is out of the capability of many people who would want to try such a thing)... usually if someone wants to make a key based off of an image a reference object such a a quarter is used, and the camera has to be as close to 90 degrees as possible, unless a lot of extra work is desired by the key maker...
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
Well to be daft and for the sake of the debate, is probably the most common key out there, the standard Schledge house key. Key blanks are easy enough to get and the spacing between pins is known, thus only vertical extrapolation would be the problem, and since the dimensions are standard mostly, wouldn't be too hard.
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