FwibbFwibb t1_ist9p0w wrote
Reply to comment by BabySinister in A “Green” Quantum Sensor. Researchers have demonstrated a quantum sensor that can power itself using sunlight and an ambient magnetic field, an achievement that could help reduce the energy costs of this energy-hungry technology. by MistWeaver80
Lasers are horribly inefficient at converting power from your wall to actual output power.
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