|
- 积分
- 17983
- 威望
- 17983
- 包包
- 26159
|
2014年1月31日 Science
( r* O4 Y5 a- R
- D* |$ x1 l. L# z& T# m& UCOVER A circulator for sound. The arrows represent acoustic signals flowing through the device (diameter: ~20 centimeters), which circulates sound in a nonreciprocal fashion: Signals can flow from left to top, from top to right, and from right to left, but not in the opposite directions. This creates one-way communication channels for sound, allowing listeners to hear but not be heard in return. See pages 495 and 516. Image: Erik Zumalt, Cockrell School of Engineering, The University of Texas at Austin
* E: I: ^6 q% V" G6 L4 l
7 r/ e4 K' X* b0 H% `# s |
-
总评分: 威望 + 20
包包 + 20
查看全部评分
|
发表于 2014-2-5 14:41
