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。
A new paper examines using the human body to transmit information – including passwords.
Driverless cars have potential energy savings, but engineers say we should consider the possibility that the technology will intensify car use.