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Solve : Fix scratch on CD with Toothpaste?? |
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Answer» Fix scratch on CD with Toothpaste? like the one where water boiled in the microwave can explode (only partially true)it's "partially true" in the way that matters. The water reaches boiling point but due to the way most cups and mugs are created there is nothing for the vapour to form on. Once you add anything to the water- a tea BAG, coffee grounds, sugar, etc. The water will boil violently- (anybody can do this experiment), practically exploding out of the vessel, and becoming a serious risk of burns and injury. For some reason if the item is already in the water you can still have overboil (not sure why). Happened to me with a tea years ago when I had to use a microwave. Scared the bejesus out of me. Take it out of the microwave, put a bit of sugar in, treat resulting burns. Now, yes, it's only "partially true" because you have to add something to it, but why else would you heat water in a microwave? Nobody thinks "you know what I need, a nice hot cup of water with absolutely nothing in it"; the sole reason for heating water is for making some sort of hot beverage, which means something is added to the water at some point. Quote in each case people believed the story because they had very little understanding of the underlying technology.This coming from a person who can't even put a cup of water in a microwave to confirm his skepticism on the aforementioned "boiling water" or, if he did, is unable to reason that very few people are going to just boil some water and not add something to it. Speaking of not understanding technology: Quote As the CD spins, the time it takes for the light to reflect and return tells your CD ROM whether or not there’s a “pit” or “land” – the structure within the CD where the data is encoded."the time it takes"? is he really entertaining the idea that the time it takes light to go less than a few millimeters is actually something you can measure with any sort of electronics? It's not the time it takes, it's the reflectivity of the surface. If more than a certain a amount of light get's reflected back, it's a land; otherwise it's a pit. His explanation of what happens with scratches is also only partially accurate in that typically a scratch will block light entirely, causing any attempt to read the reflectivity layer beneath the scratch to be interpreted as a pit. there is built in ECC (a typical CD-ROM actually contains more than a GB of data, most of it is error correction stuff) but outside a few misinterpreted bits here and there it can't do much except declare a CRC error to the controller. Quote This goes against everything your mother ever told you about not touching the back of a CDIs this guy 12 or something? basically, this entire thing boils down to "toothpaste found to contain abrasive agents, more at 11". Just like the thermal compound thing. the only reason toothpaste works at all as a thermal compound is because it contains water. Once that water goes away- usually in less than a hour- the toothpaste is useless and serves only as a chalky insulator. You can get the same effect by using wet sawdust, or ketchup or mustard.Mayonnaise lasts the longest...in my "empirical studies".... Not my quote.The method I recall hearing about is car wax. I see it's mentioned here: http://howto.wired.com/wiki/Fix_a_Scratched_CD My reference was to thermal paste...shoulda CLARIFIED that...Not only is this thread informative...but, I've really enjoyed the comedy relief it has provided. Now...excuse me while I make a CPU sandwich... Quote from: GlitchPC on February 28, 2012, 02:18:02 PM Not only is this thread informative...but, I've really enjoyed the comedy relief it has provided. Now...excuse me while I make a CPU sandwich... Wanna buy some Crest ? ? Quote from: patio on February 28, 2012, 02:31:34 PM Wanna buy some Crest ? ?Stock up now! If Doomsday does not come this year, you still want to keep your teeth! Quote Electrical Engineer with Search Engine Optimization expertise What a clown. Anyhow, the theory SOUNDS reasonable. They want you to use gritty toothpaste or baking soda and if it works on teeth, I don't see in why it wouldn't work on CD's as well. Whether it's more effective than getting someone with a specialised machine do it, is another matter of course... Quote from: GlitchPC on February 28, 2012, 02:18:02 PM Not only is this thread informative...but, I've really enjoyed the comedy relief it has provided. Now...excuse me while I make a CPU sandwich... LOL. From my experience with toothpaste and polishing out imperfections - the toothpaste does not "sand down" anything. I've used toothpaste to take scratches out of my watch face. The particles in a gritty toothpaste are small enough to acutally fill the scratch. After I was done with my watch and it looked like the scratch was gone, my dad polished it with a type of car polish and Viola the scratch was back. Quote from: patio on February 28, 2012, 01:54:47 PM My reference was to thermal paste...shoulda clarified that...You brush your teeth with it? |
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