I just had one of those great ideas, a plan for a device that will (would) be an almighty tool in school&exam cheating. The idea is to use UV lamp and a pen that writes with invisible ink, made of raw potatoes that contain farinaceous. The UV light itself is invisible, and even when the lamp (shaped like the pen) is pointed towards the ink, it's invisible. What's the key? A filter. A thin, plastic filter (that is usually white, like on neon bulbs, but I read it can be transparent) that can be "glued" to glasses. This would allow you to see the ink, without anyone knowing. The only way to reveal the ink (when it dries) is to expose it to 250 degrees (Celsius), but I doubt that teacher would roast your table.
Then my little sister told me "you can buy one of those in China town"… Man, was I pissed off! Why is it, that anything I come up with is already invented by China, Tesla, Darwin, NASA, or Sony ???That's why I decided to move to Mars. Hopefully they have internet there… If I find any life forms, I can spread my inventions, without worrying about copyright, cause thise lifeforms are probably single-cell organisams.————————————-Okay, I'm on mars now. I seem to have a good connection here, so it's all good. In case you wondered how do Mars citizens look, I made a pic, with my special space camera.http://img54.imageshack.us/my.php?image=marsovac9jv.pngI'm leaving Earth. Hopefully they have internet on Mars.
Posted by Episonage on Jan. 25, 2007, 1:46 p.m.
Comments
Hm! Good one. Same here. I was thinking of the PSP years before it was made but then Sony made it.
Life's a balls!Sadly, nothing in the world seems to be original anymore.
Damn straight! It is so hard to come up with a tottally new,not similir to anything- type of game!
Someone's been watching too much CSI.
By the way, that would require a transparent frequency-changing passive filter. Your knowledge of science is a little lacking.I suggest posting this idea on http://www.halfbakery.com - see what happens.I agree, my knowledge of science (which science) IS in fact lacking. But nobody's born with knowledge. I'm learnin'! So far, it's just a raw idea. Well not any more, anyway, since I'm moving to Mars.
And yeah, I've been watching CSI, but not too much. In fact, not enough. TV station in my country just cut the season in half, and continued with CSI:NY (which btw, sux)
Its good to learn - keep yor' eyes and ears receiving data at all timez!
Hey, aren't the neon lights covered with those filters? I'm going to high school for electronics, and my teacher mentioned this.. The only problem is that the filter is INSIDE the tube.
PS: thanks for the link, seems like valuable source of info :)Neon lights are filled with different gases(like Argon), each give off a different color when a charge is sent though them.
@ Kaz - some neon tubes have a color-filter inside.
Light from neon tubes IS visible light. The filters on them just changes the color - not by <b>changing</b> the frequency, but by <b>removing</b> certain frequencies. White light is non-coherent with multiple color/frequencies, as white light isn't 1 beam or wave, but instead a lot of them.To explain - pretend you have a red filter, and a UV filter - the red one filters out all light except in the red frequency range, so you see red. The UV filter removes all light that aren't in the UV frequency. So you see UV - and since you can't see UV, you see… nothing. Black.