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Interesting Engineering on MSN17 小时

Simple salt tweak pushes sodium batteries past 500 cycles and 70% capacity retention

In lab tests, the anode-free sodium battery hit a critical current density above 20 mA cm⁻² and supported charging rates of ...

Project KALI: The classified truth about India's electromagnetic 'God of destruction'

India’s KALI (Kilo Ampere Linear Injector) is a powerful directed energy weapon developed by DRDO and BARC. Using electron ...