编辑部小王的家里有一只纯种北京犬，每当夜晚出去遛狗的时候，北京犬的总会在指定的位置站起来四处张望，然后开始吼叫。这只北京犬似乎听到了什么。小王很不理解，又无能为力，他没有有察觉到任何的异常。问过专业人士，小王才知道，每天遛狗的那个位置有超声波存在，依靠人类的听觉能力毫无办法。人们对着麦克风说话。实际上，麦克风其功能和人耳类似，是一种收音的设备。如果有了更好的麦克风接收人类听觉以外的声波信号，经过慢放处理，就能让人知道狗听到了什么。加州大学伯克利分校的科研人员用石墨烯制成了新式的超声波麦克风，全新麦克风的出现有望打破这样的僵局，解决小王的困惑。研究者已经将文章发表到了《PNAS》上，其中提到了在...
The editor's Wang family has a purebred Beijing dog who, at night, goes out to walk the dog, the Beijing dog stands up at the designated spot, looks around, and begins to howl. What does the Beijing dog seem to hear?. Xiao Wang did not understand and could do nothing about it. He was unaware of any abnormalities. Asked a professional, Xiao Wang knew that the location of the dog's walk was supersonic, and that it was impossible to rely on human hearing. People speak to the microphone. In fact, a microphone has the same function as a human ear. It is a radio receiver. If a better microphone receives sound signals other than human hearing, it can be made known to the dogs by slow processing. Researchers at the University of California at Berkeley used graphene to make a new type of ultrasonic microphone, and the advent of a new microphone promises to break the deadlock and solve Wang's confusion. Researchers have published the article in PNAS, which refers to...
