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Summary
| Description |
English: The electromagnetic spectrum. The scarcity of intense broadband sources of radiation in the 1012 hertz (terahertz) frequency range leaves us blind to a wide range of interesting phenomena. |
| Date | |
| Source | U.S. Dept of Energy - Lawrence Berkley National Lab - The advanced light source |
| Author | J.M. Byrd, D.S. Robin, F. Sannibale, A.A. Zholents, and M.S. Zolotorev (Accelerator and Fusion Research Division, Berkeley Lab); Z. Hao and M.C. Martin, (ALS); and R.W. Schoenlein (Materials Sciences Division, Berkeley Lab). |
| Permission (Reusing this file) |
Public Domain |
Between the microwave and infrared regions, where electromagnetic waves oscillate at a frequency of 1012 hertz (terahertz), we have a noticeable blind spot. An almost limitless array of interesting phenomena occur at terahertz frequencies: Excited electrons orbit, small molecules rotate, proteins vibrate, superconducting energy gaps resonate, and gaseous and solid-state plasmas oscillate. The list goes on.
Licensing
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:02, 25 September 2009 | | 500 × 133 (17 KB) | Ti-30X | {{Information |Description={{en|1=The electromagnetic spectrum. The scarcity of intense broadband sources of radiation in the 10<sup>12</sup> hertz (terahertz) frequency range leaves us blind to a wide range of interesting phenomena.}} |Source=U.S. Dept o |
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