充电器不见了?这款手机无需充电
对于新型的手机来说,只需要几微瓦即可维持运行。与此同时,人们也不再需要电池。取而代之的是一种全新的“充电”方式:无线电信号、光信号。
对于新型的手机来说,只需要几微瓦即可维持运行。与此同时,人们也不再需要电池。取而代之的是一种全新的“充电”方式:无线电信号、光信号。
Sending a password or secret code over airborne radio waves like WiFi or Bluetooth means anyone can eavesdrop, including hackers.
Driverless cars, like the one Google launched in 2012, are touted for their potential energy savings, but engineers say we should consider the possibility that the technology will intensi...