use the following search parameters to narrow your results:
e.g. subreddit:aww site:imgur.com dog
subreddit:aww site:imgur.com dog
see the search faq for details.
advanced search: by author, subreddit...
~90 users here now
Would you prefer this same subreddit, but only images? Check out /r/DTIpics! We take all the picture submissions from the main sub and post them there!
This sub-reddit is a place to post interesting material: the rare, the unreal, above all the most damn interesting things in this world. Original content is welcomed with open arms! We take any submission - article, picture, GIF, video, textpost - as long as it makes you say "Damn, that's interesting." We would like to keep all our posts genuine. Photoshopped images and fake videos typically don't belong here. But of course there are exceptions when it is top quality material that is damn interesting. For the most part we want to stay in the realm of reality. Please avoid mildly interesting posts, there are other sub-reddits for that material. No racism or hate speech will be tolerated. We are a community and you are welcomed to post or discuss but please respect members.
This sub-reddit is a place to post interesting material: the rare, the unreal, above all the most damn interesting things in this world.
Original content is welcomed with open arms!
We take any submission - article, picture, GIF, video, textpost - as long as it makes you say "Damn, that's interesting."
We would like to keep all our posts genuine. Photoshopped images and fake videos typically don't belong here. But of course there are exceptions when it is top quality material that is damn interesting. For the most part we want to stay in the realm of reality.
Please avoid mildly interesting posts, there are other sub-reddits for that material.
No racism or hate speech will be tolerated. We are a community and you are welcomed to post or discuss but please respect members.
Message the moderators if you have questions or concerns. We are active and will respond as soon as possible. Please familiarize yourself with the official rules and reddiquette.
Message the moderators if you have questions or concerns. We are active and will respond as soon as possible.
Please familiarize yourself with the official rules and reddiquette.
/r/interestingasfuck /r/ThisBlewMyMind /r/woahdude /r/lookscool /r/mildlyinteresting /r/illusionporn /r/InfrastructurePorn /r/Infographics /r/InternetIsBeautiful /r/HumanPorn /r/EarthPorn /r/theydidthemath /r/DTIpics
Electricity dumped on a CD (i.imgur.com)
submitted 12 時間 前 by Lurking_Alone
view the rest of the comments →
[–]EducatedRetard -13 ポイント-12 ポイント-11 ポイント 9 時間 前*
Edit: Since Reddit apparently is a fan of misinformation. Fuck you. Now none of you get to know the correct answer.
[–]PyroNavi 8 ポイント9 ポイント10 ポイント 7 時間 前
Punishing many for crimes of the few, I see.
[–]EducatedRetard -8 ポイント-7 ポイント-6 ポイント 7 時間 前
Indeed. Tough love.
[–]VeXCe 2 ポイント3 ポイント4 ポイント 8 時間 前*
The reflective layer is being removed, the actual data is in the plastic layer and is probably still there.
Edit: OR NOT! See this guy for something different: http://www.reddit.com/r/Damnthatsinteresting/comments/25g55p/electricity_dumped_on_a_cd/chh2eop
[–]sphks 1 ポイント2 ポイント3 ポイント 7 時間 前
Isn't it different if it's a CD and a CD-R ? A CD is pressed to reproduce pits, so the data are on the plastic layer. A CD-R is burned, so the data are on the reflective layer.
[–]jeffredd 1 ポイント2 ポイント3 ポイント 7 時間 前
Yes and no. On a CD Rom the mirror of the data is in the polycarbonate as a bi-product of the manufacturing process. But the data is technically encoded in the aluminum since that is what causes the different values to be read.
If you had a perfectly flat reflective layer but bumps and pits in the polycarbonate, you wouldn't be able to read any data. The reflection would be uniform and wouldn't provide the variance that is what translates to the data.
[–]VeXCe 1 ポイント2 ポイント3 ポイント 7 時間 前
CD-R's use dyes, but CD-RW does use a metal alloy for its storage.
[–]jeffredd 0 ポイント1 ポイント2 ポイント 7 時間 前
Cool. I didn't realize that.
[–]EducatedRetard -9 ポイント-8 ポイント-7 ポイント 8 時間 前*
Edit: Yep, everyone upvote this guy and take his blatant misinformed bullshit as fact. He has no idea what he's talking about, but hey, I'm an asshole for providing the correct answer. Downvote away.
The data is probably still on the plastic, man!! lol
[–]jeffredd 2 ポイント3 ポイント4 ポイント 8 時間 前
This is correct. The 'data' is stored in the pits and bumps in the reflective layer. The polycarbonate is just there to carry the very thin aluminum layer for the data.
[–]VeXCe -3 ポイント-2 ポイント-1 ポイント 7 時間 前
Perhaps you should fix the wiki page then?
[–]autowikibot 2 ポイント3 ポイント4 ポイント 7 時間 前
Section 6. Physical details of article Compact disc:
A CD is made from 1.2 millimetres (0.047 in) thick, polycarbonate plastic and weighs 15–20 grams. From the center outward, components are: the center spindle hole (15 mm), the first-transition area (clamping ring), the clamping area (stacking ring), the second-transition area (mirror band), the program (data) area, and the rim. The inner program area occupies a radius from 25 to 58 mm. A thin layer of aluminium or, more rarely, gold is applied to the surface making it reflective. The metal is protected by a film of lacquer normally spin coated directly on the reflective layer. The label is printed on the lacquer layer, usually by screen printing or offset printing. CD data is represented as tiny indentations known as "pits", encoded in a spiral track moulded into the top of the polycarbonate layer. The areas between pits are known as "lands". Each pit is approximately 100 nm deep by 500 nm wide, and varies from 850 nm to 3.5 µm in length. The distance between the tracks, the pitch, is 1.5 µm.
A CD is made from 1.2 millimetres (0.047 in) thick, polycarbonate plastic and weighs 15–20 grams. From the center outward, components are: the center spindle hole (15 mm), the first-transition area (clamping ring), the clamping area (stacking ring), the second-transition area (mirror band), the program (data) area, and the rim. The inner program area occupies a radius from 25 to 58 mm.
A thin layer of aluminium or, more rarely, gold is applied to the surface making it reflective. The metal is protected by a film of lacquer normally spin coated directly on the reflective layer. The label is printed on the lacquer layer, usually by screen printing or offset printing.
CD data is represented as tiny indentations known as "pits", encoded in a spiral track moulded into the top of the polycarbonate layer. The areas between pits are known as "lands". Each pit is approximately 100 nm deep by 500 nm wide, and varies from 850 nm to 3.5 µm in length. The distance between the tracks, the pitch, is 1.5 µm.
Interesting: CD-ROM | Compact Disc Digital Audio | CD single | Compact Disc manufacturing
Parent commenter can toggle NSFW or delete. Will also delete on comment score of -1 or less. | FAQs | Mods | Magic Words
You're right. The wiki page is incorrect. The polycarbonate is just there to protect the data layer, which in the case of a CD ROM is the aluminum (or sometimes gold) layer. The laser hits that reflective layer, and depending on the pits and bumps in that layer it gets different values back. Those values make up the data.
It looks confusing because for a CD ROM the polycarbonate has the mirror of the pits and bumps (because of the way the disk is made), so it can look like the data is in the polycarbonate. But its not. If the reflective layer were perfectly flat, you would get no data regardless of pits and bumps in the polycarbonate.
If you look at a CD-R or CD-RW, etc. It gets a little clearer. In that case, there is a dye later between the polycarbonate and the reflective layer. The dye takes the place of the pits and bumps in the reflective layer. When writing to the disk, the laser "burns" the dye, changing the reflective quality of a particular spot, thus encoding the data.
Again, the polycarbonate serves only as a substrate to hold the data, it does not have an encoding of the data itself.
[–]VeXCe 0 ポイント1 ポイント2 ポイント 7 時間 前
Well, that should be fixed, then. Either way, if the plastic holds the mirror image of the reflective layer, the data is still there :)
ONLY for a CD ROM, not for CD-R, CD-RW, CD+R or whatever the other types are.
It may vary with the manufacture process too, but I don't really know about that.
[–]EducatedRetard -2 ポイント-1 ポイント0 ポイント 7 時間 前
There you go, spamming wiki links like every other mouth-breather on Reddit. I've got an idea: How about actually be informed on a subject before arguing it? Being able to type things into Google doesn't make you unique ...or intelligent.
Just my 2 cents: You might not get so many down votes if you toned down the anger a bit. The poor guy/gal was just mistaken. It's not like they shot your dog ;-)
[–]EducatedRetard -1 ポイント0 ポイント1 ポイント 7 時間 前
It's like they shot my dog and fucked my sister. I get angry when ignorance is rewarded. I'm already informed on the subject, so quite frankly they are the only ones losing out on something. I care about downvotes about as much as I care about the shape of my turds in my morning shit.
[–]jeffredd 1 ポイント2 ポイント3 ポイント 6 時間 前
I like to stamp out misinformation where I can, too. But the anger approach just makes the other party defensive, and takes focus away from the facts that you're trying to communicate.
If you're already right on a subject, take solace in that fact alone. Use patience and logic to help fix the problem. You'll find people respond much better to new ideas when presented with calm and rational thoughts. At least, that's what I usually try to do. Some days I can just be a dick, though. ;-)
[–]VeXCe -1 ポイント0 ポイント1 ポイント 7 時間 前
[–]EducatedRetard -4 ポイント-3 ポイント-2 ポイント 7 時間 前
Why? Then less uneducated people like you would have wiki articles to link to. How else are they supposed to act informed?
Obvious troll is finally obvious. Sorry, I don't get the humour of trolling.
EducatedRetard isn't really trolling you. He does seem a bit(!) angry, though. Hopefully, my approach hasn't come across so dramatically ;-)
If you do some more reading from technical journals and such on the web, you'll see the change in reflectivity is what makes it possible to read data from the disk. The polycarbonate doesn't play a part in that reflectivity, so isn't really where the data is "stored". My other responses will hopefully make it clearer.
Yeah, that's what I did, the wiki page does appear to be wrong. I also pointed him towards your comments on how he can be more educating and less retarded towards others.
I appreciate the compliment!
I also chided him for being so angry. That approach never helps anyone, and just makes the angry person look like a douche. You never said anything that merited such angry responses.
Have a good day/evening/night depending on where you are!
Yes, call me a troll now that you have no ground left to stand on. You were incorrect from the beginning, argued a point that was completely off-base and presented it as fact, and have absolutely no knowledge on the subject other than what you could find on wikipedia. That somehow makes me a troll. I'm pretty sure it actually just makes you an evil dumbass.
It's not enough that you are unintelligent, you actually want to spread your ignorance to others. I was actually trying to provide people with useful and factual information, so fuck me I'm a huge troll I guess.
Look, asshole, this is how you spread information: http://www.reddit.com/r/Damnthatsinteresting/comments/25g55p/electricity_dumped_on_a_cd/chh2eop.
Read, learn, and maybe, someday, someone will believe something you said.
So you just linked me to someone else's comment lol. Do you actually have anything inside your head? My comment stands, I'm correct, and I couldn't care less if people listen to me ...That's why I wiped my comments out. They don't deserve to learn anything and either do you. Google around some more, maybe you'll find some new evidence that completely contradicts how technology works!
[–]VeXCe -1 ポイント0 ポイント1 ポイント 5 時間 前
I hope you have a pleasant day, nonetheless :)
[–]geophsmith 0 ポイント1 ポイント2 ポイント 5 時間 前
Well I don't think I've ever seen a username more accurate than that one.
[–]EducatedRetard 0 ポイント1 ポイント2 ポイント 5 時間 前
Such originality, so clever. Only the second today.
You guys and your epic burns.
[–]nebulouscloud 0 ポイント1 ポイント2 ポイント 1 時間 前
You're living up to your name with your edit.
必要なのはユーザ名とパスワードだけ
for more information, see our privacy policy.
アカウントを作る
ソンナニカンタン? チョットタメシテミナイ?
アカウントがあるなら後はログインするだけ
ログイン
π Rendered by PID 7701 on app-144 at 2014-05-14 02:46:02.258318+00:00 running 5900575.
view the rest of the comments →
[–]EducatedRetard -13 ポイント-12 ポイント-11 ポイント
[–]PyroNavi 8 ポイント9 ポイント10 ポイント
[–]VeXCe 2 ポイント3 ポイント4 ポイント
[–]sphks 1 ポイント2 ポイント3 ポイント
[–]jeffredd 1 ポイント2 ポイント3 ポイント
[–]VeXCe 1 ポイント2 ポイント3 ポイント
[–]jeffredd 0 ポイント1 ポイント2 ポイント
[–]geophsmith 0 ポイント1 ポイント2 ポイント
[–]EducatedRetard 0 ポイント1 ポイント2 ポイント
[–]nebulouscloud 0 ポイント1 ポイント2 ポイント