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(Phys.org) -- “If you made a long distance phone call or sent an email today, or if you’re wearing clothes, then you are benefiting directly from our laser services,” says Marla Dowell, leader of PML’s Sources and Detectors Group, the nation’s keeper of a family of standards that now permit laser calibrations at power levels from nanowatts to hundreds of kilowatts and energy levels from femtojoules to megajoules.

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