Morning Overview on MSN
Ultrashort laser pulses capture a snapshot of a molecular handshake
Ultrashort bursts of laser light are giving scientists a way to freeze one of chemistry’s most elusive moments, the instant ...
Survival World on MSN
The simple mechanics behind the AR-15 gas system
At its core, the AR-15 uses a direct impingement gas system to cycle rounds. This system redirects a portion of the gas ...
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