摘要

Comes from English wikipedia http://en.wikipedia.org/wiki/Image:CDRomPits.jpg the page states GFDL 1.2

Summary from en: wiki

An audio CD of mine. Portion shown is the innermost, as such would doubtless be the intro to the first track. Taken with a Sony T-33 zoomed in about 2X, held up to the 10X eyepiece of a microscope using the 100X lens (100X total, 10X). The CD was placed directly on the microscope, and illuminated from the side with a very small bright-white LED.

The pits in a CD are 500nm wide, between 830nm and 3000nm long and 150nm deep.

The total track width, including pits and space between, is 1600nm between intervals.

Image created by Jason Kennerly in 2007.

History from en: wiki

(cur) (last) 10:39, 15 July 2007 Zaphraud (Talk | contribs) (626 bytes) (→Summary) (undo)

(cur) (last) 01:38, 13 July 2007 Zaphraud (Talk | contribs) (608 bytes) (Clarify sizings to indicate track width instead of just pit size.) (undo)

(cur) (last) 01:33, 13 July 2007 Zaphraud (Talk | contribs) m (521 bytes) (Real World Name attribute.) (undo)

(cur) (last) 11:10, 12 July 2007 Zaphraud (Talk | contribs) (479 bytes) (→Summary) (undo)

(cur) (last) 11:06, 12 July 2007 Zaphraud (Talk | contribs) (475 bytes) (An audio CD of mine. Portion shown is the innermost, as such would doubtless be the intro to the first track. Taken with a Sony T-33 zoomed in about 2X, held up to the 10X eyepiece of a microscope using the 100X lens. The CD was placed directly on the mic)

许可协议

我，本作品著作权人，特此采用以下许可协议发表本作品：

已授权您依据自由软件基金会发行的无固定段落及封面封底文字（Invariant Sections, Front-Cover Texts, and Back-Cover Texts）的GNU自由文件许可协议1.2版或任意后续版本的条款，复制、传播和／或修改本文件。该协议的副本请见“GNU Free Documentation License”。http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	本文件采用知识共享署名-相同方式共享 3.0 未本地化版本许可协议授权。
	您可以自由地： 共享 – 复制、发行并传播本作品 修改 – 改编作品 惟须遵守下列条件： 署名 – 您必须对作品进行署名，提供授权条款的链接，并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名，但不得以任何方式表明许可人认可您或您的使用。 相同方式共享 – 如果您再混合、转换或者基于本作品进行创作，您必须以与原先许可协议相同或相兼容的许可协议分发您贡献的作品。
	本许可协议标签作为GFDL许可协议更新的组成部分被添加至本文件。http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

本文件采用知识共享署名 2.5 通用许可协议授权。

您可以自由地：

• 共享 – 复制、发行并传播本作品
• 修改 – 改编作品

惟须遵守下列条件：

• 署名 – 您必须对作品进行署名，提供授权条款的链接，并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名，但不得以任何方式表明许可人认可您或您的使用。

https://creativecommons.org/licenses/by/2.5CC BY 2.5 Creative Commons Attribution 2.5 truetrue

您可以选择您需要的许可协议。