Overclock.net › Forums › Industry News › Technology and Science News › [Io9]It took a team of physicists all this time to figure out how DVDs work
New Posts  All Forums:Forum Nav:

[Io9]It took a team of physicists all this time to figure out how DVDs work

post #1 of 17
Thread Starter 
Quote:
Though DVDs have been consumer-grade tech for years, it wasn't until yesterday that scientists announced they were certain why they worked. Now we know that burning a DVD is really more like freezing it. DVD burning image by Filipe La Rotta.
It's been well known for decades that if you train a laser onto a specially-crafted layer of metal alloys on an optical disk, you create a storage medium that can hold an enormous amount of data for decades - and possibly centuries. But what's going on when the laser hits metal?
An international group of scientists based in Germany have been puzzling out that problem for several years. They're using one of the world's biggest supercomputers, JUGENE, to simulate what happens - nanosecond by nanosecond - when a laser hits the thin layer that gleams on the surface of a pristine DVD. For their most recent experiment, the group focused on one of the most popular alloys, or metal mixes, used to make DVDs. This alloy is nicknamed AIST, after its elements - AIST contains small amounts of silver (Ag), indium (In), antimony (Sb), and tellurium (Te). Like antimony (pictured at left), all these elements are very reflective, and together they give your DVDs that lustrous shine.

Err...wat?
http://io9.com/5729882/it-took-a-tea...yline=true&s=i
post #2 of 17
Lol, sweetness. So I guess I'm going to be freezing a few DVD's very soon?
 
The Asgard II
(10 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II x4 965 BE C3 Revision ASRock 890FX DELUXE5 GIGABYTE GTX 480 Super Overclock 8GB G.SKILL PI 1600MHz 
Hard DriveOptical DriveOSMonitor
Mushkin Callisto 120GB SSD + WD 7200RPM 500GB Who cares? Windows 7 Home Premuim 64bit Viewsonic vx2265wm 
KeyboardPowerCaseMouse
AZIO Levetron Mech4 CORSAIR CMPSU-750TX 750W NZXT M59 Logitech G9x 
Mouse PadAudio
Razer Goliathus (Speed Edition) ASUS Xonar D1 
CPUMotherboardGraphicsRAM
A4-3300 APU BIOSTAR TA75M+ AMD Radeon HD 6450 G.SKILL Ripjaws 
Hard DriveCoolingMonitorPower
Corsair Nova Series 2 CSSD-V60GB2 SSD Ultra ChillTec Black I-Inc iP-192ABB 19" Class Widescreen LCD Monitor Mushkin Enhanced Volta MKNPSVT500 PSU 
CaseMouse
Xigmatek Asgard II KINGWIN KW-03 Wired Optical 800 dpi Mouse 
  hide details  
Reply
 
The Asgard II
(10 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II x4 965 BE C3 Revision ASRock 890FX DELUXE5 GIGABYTE GTX 480 Super Overclock 8GB G.SKILL PI 1600MHz 
Hard DriveOptical DriveOSMonitor
Mushkin Callisto 120GB SSD + WD 7200RPM 500GB Who cares? Windows 7 Home Premuim 64bit Viewsonic vx2265wm 
KeyboardPowerCaseMouse
AZIO Levetron Mech4 CORSAIR CMPSU-750TX 750W NZXT M59 Logitech G9x 
Mouse PadAudio
Razer Goliathus (Speed Edition) ASUS Xonar D1 
CPUMotherboardGraphicsRAM
A4-3300 APU BIOSTAR TA75M+ AMD Radeon HD 6450 G.SKILL Ripjaws 
Hard DriveCoolingMonitorPower
Corsair Nova Series 2 CSSD-V60GB2 SSD Ultra ChillTec Black I-Inc iP-192ABB 19" Class Widescreen LCD Monitor Mushkin Enhanced Volta MKNPSVT500 PSU 
CaseMouse
Xigmatek Asgard II KINGWIN KW-03 Wired Optical 800 dpi Mouse 
  hide details  
Reply
post #3 of 17
Thought I saw something like this already today

either way, you would have guessed we would have known how DVDs work since they've been around for a while now..
post #4 of 17
Quote:
Originally Posted by Yumyums View Post
Thought I saw something like this already today

either way, you would have guessed we would have known how DVDs work since they've been around for a while now..
We knew how, else we wouldn't have them. We just know why now.
Mk. IV
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3930k Asus Rampage IV Extreme 2x Sapphire 7950 DualX 8GB (4x2GB) Corsair XMS3 DDR3-2000 
Hard DriveOptical DriveCoolingOS
2x Samsung F3 1TB RAID0, 2x Seagate 7200.11 500GB LG Black 22x Corsair H100 Windows 7 Professional 
MonitorKeyboardPowerCase
Samsung 46in TV Logitech G19 Corsair AX1200 Corsair 800D 
Mouse PadAudio
Borderlands pad, signed by production team Onkyo 5.1ch surround 
  hide details  
Reply
Mk. IV
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3930k Asus Rampage IV Extreme 2x Sapphire 7950 DualX 8GB (4x2GB) Corsair XMS3 DDR3-2000 
Hard DriveOptical DriveCoolingOS
2x Samsung F3 1TB RAID0, 2x Seagate 7200.11 500GB LG Black 22x Corsair H100 Windows 7 Professional 
MonitorKeyboardPowerCase
Samsung 46in TV Logitech G19 Corsair AX1200 Corsair 800D 
Mouse PadAudio
Borderlands pad, signed by production team Onkyo 5.1ch surround 
  hide details  
Reply
post #5 of 17
so what happens, does it paint little tiny pictures or....???? this is interesting, indeed, but still doesn't answer the '?'
Retail Edge Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k 4.2 Ghz GIGABYTE GA-P67X-UD3-B3 SLI MSI 560 4GB (2x2) G Skill 1600 1.5v cas 8 
Hard DriveOptical DriveOSMonitor
500GB WD RE4 ASUS DRW-24B1ST Windows 7 Pro 64bit ASUS 26" + LG 23" 
KeyboardPowerCaseMouse
Saitek Cyborg Seasonic X-series 650W Gold CM HAF 922 Steelseries Xai 
Mouse Pad
X Trac pads pro 
  hide details  
Reply
Retail Edge Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k 4.2 Ghz GIGABYTE GA-P67X-UD3-B3 SLI MSI 560 4GB (2x2) G Skill 1600 1.5v cas 8 
Hard DriveOptical DriveOSMonitor
500GB WD RE4 ASUS DRW-24B1ST Windows 7 Pro 64bit ASUS 26" + LG 23" 
KeyboardPowerCaseMouse
Saitek Cyborg Seasonic X-series 650W Gold CM HAF 922 Steelseries Xai 
Mouse Pad
X Trac pads pro 
  hide details  
Reply
post #6 of 17
If they didn't know how they worked, How were they developed, Makes no sense.
My System(s)
(15 items)
 
  
CPUMotherboardGraphicsRAM
5820k MSI X99S PLUS MSI Lightning GTX 780 3GB Team Group 2x4GB 2400MHz Ordering new ram soon. 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos Deluxe LG 22X DVDRW XSPC 240mm kit Windows 8.1 
MonitorKeyboardPowerCase
Qnix QX2710 (96Hz) Logitech G15 Corsair HX850 Azza Hurrican (R) 
Audio
Creative Labs Titanium X-FI 
  hide details  
Reply
My System(s)
(15 items)
 
  
CPUMotherboardGraphicsRAM
5820k MSI X99S PLUS MSI Lightning GTX 780 3GB Team Group 2x4GB 2400MHz Ordering new ram soon. 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos Deluxe LG 22X DVDRW XSPC 240mm kit Windows 8.1 
MonitorKeyboardPowerCase
Qnix QX2710 (96Hz) Logitech G15 Corsair HX850 Azza Hurrican (R) 
Audio
Creative Labs Titanium X-FI 
  hide details  
Reply
post #7 of 17
Quote:
Originally Posted by Coolio831 View Post
If they didn't know how they worked, How were they developed, Makes no sense.
Knowing how something works, and simply knowing it works are two seperate things.
My Buddy
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 965 BE Gigabyte MA790FXT-UD5P Diamond HD 5970 4x Crucial Ballistic Tracer DDR3 1333mhz 2Gig 
Hard DriveOptical DriveOSMonitor
4x Segate Barracuda 1TB, 1x OCZ Vertex 120g SSD Sony Blu Ray/DVD-RW/CD-RW Windows 7 Professional 64 Bit 3 Hannspree HF289HJB 
KeyboardPowerCaseMouse
Majestouch Tactile Touch NKRO, G13 Gamepad Antec TPQ-1200 Antec 1200 Razer Deathadder 
Mouse Pad
Razer Destructor 
  hide details  
Reply
My Buddy
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 965 BE Gigabyte MA790FXT-UD5P Diamond HD 5970 4x Crucial Ballistic Tracer DDR3 1333mhz 2Gig 
Hard DriveOptical DriveOSMonitor
4x Segate Barracuda 1TB, 1x OCZ Vertex 120g SSD Sony Blu Ray/DVD-RW/CD-RW Windows 7 Professional 64 Bit 3 Hannspree HF289HJB 
KeyboardPowerCaseMouse
Majestouch Tactile Touch NKRO, G13 Gamepad Antec TPQ-1200 Antec 1200 Razer Deathadder 
Mouse Pad
Razer Destructor 
  hide details  
Reply
post #8 of 17
Quote:
Originally Posted by Coolio831 View Post
If they didn't know how they worked, How were they developed, Makes no sense.
I think they knew HOW just not why ..... (?)
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
post #9 of 17
Quote:
Originally Posted by civilian_pr0ject View Post
so what happens, does it paint little tiny pictures or....???? this is interesting, indeed, but still doesn't answer the '?'
The answer to that question has always been known. The laser creates "lands" and "pits" in the alloy that correspond to 1s and 0s of binary. This article explains how the laser is able to create pits at all.
    
CPUMotherboardGraphicsRAM
Core i7 4770k delid 4.3GHz Asus Z97M-Plus MSI GTX 770 2GB 1241/3815MHz 4x8GB Team DDR3-1600 
Hard DriveCoolingOSMonitor
Crucial MX100 512GB + 2x1.5TB WD Green (RAID 1) Arctic Freezer i11 (MX4) Windows 8.1 Pro + CentOS 6.5 VM Dell U2412M (1920x1200) 
KeyboardPowerCaseMouse
KUL ES-87 (Cherry MX Clear) Corsair CS550M Jonsbo U3BK (Rosewill Legacy U3-B) Logitech G400s 
Mouse PadAudio
XTRAC Carbonic Fiio Andes E07K + Audio Technica ATH-M50 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Core i7 4770k delid 4.3GHz Asus Z97M-Plus MSI GTX 770 2GB 1241/3815MHz 4x8GB Team DDR3-1600 
Hard DriveCoolingOSMonitor
Crucial MX100 512GB + 2x1.5TB WD Green (RAID 1) Arctic Freezer i11 (MX4) Windows 8.1 Pro + CentOS 6.5 VM Dell U2412M (1920x1200) 
KeyboardPowerCaseMouse
KUL ES-87 (Cherry MX Clear) Corsair CS550M Jonsbo U3BK (Rosewill Legacy U3-B) Logitech G400s 
Mouse PadAudio
XTRAC Carbonic Fiio Andes E07K + Audio Technica ATH-M50 
  hide details  
Reply
post #10 of 17
RadioLab touched on this sort of thing in an episode I listened to recently: The more we rely on computers to solve the questions of the world around us, the more we understand that something works without understanding why it works.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Technology and Science News
Overclock.net › Forums › Industry News › Technology and Science News › [Io9]It took a team of physicists all this time to figure out how DVDs work