|
- 积分
- 17983
- 威望
- 17983
- 包包
- 26159
|
2014年1月31日 Science
0 D3 E2 O' w' ]$ v" f6 J" p
: O/ ?/ n0 g( M' J' z" JCOVER 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
" }+ t* ]; ~5 K m- a
' |: n1 c$ V5 n8 p/ K |
-
总评分: 威望 + 20
包包 + 20
查看全部评分
|
发表于 2014-2-5 14:41
