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A laser communications experiment flying aboard NASA’s Psyche mission has beamed back a video to Earth from nearly 19 million miles (31 million kilometers) away — and the short clip stars a ...
Glow-in-the-dark coughs and sneezes? In the coronavirus era, this is what it takes for scientists to figure out which masks work best at stopping aerosol droplets from spreading after a cough or a ...
The Laser Communications Relay Demonstration (LCRD) is a NASA mission that will test laser communication in space for extremely long distances, [1] between Earth and geosynchronous orbit. After being integrated into STPSat-6 , a part of STP-3 , LCRD launched on 7 December 2021 on an Atlas V 551.
Laser-induced breakdown spectroscopy (LIBS) is a type of atomic emission spectroscopy which uses a highly energetic laser pulse as the excitation source. [1] [2] The laser is focused to form a plasma, which atomizes and excites samples. The formation of the plasma only begins when the focused laser achieves a certain threshold for optical ...
Researchers from Florida Atlantic University turned to laser light and glycerine to demonstrate the best type of homemade cloth masks people can use to prevent the spread of COVID-19, according to ...
Laser-induced fluorescence (LIF) or laser-stimulated fluorescence (LSF) [1] is a spectroscopic method in which an atom or molecule is excited to a higher energy level by the absorption of laser light followed by spontaneous emission of light. [2] [3] It was first reported by Zare and coworkers in 1968. [4] [5]
Coherent control is a quantum mechanics-based method for controlling dynamic processes by light.The basic principle is to control quantum interference phenomena, typically by shaping the phase of laser pulses.
The laser induces local thermal gradients in the device, which result in changes to the amount of power that the device uses. A laser is scanned over the surface of the device while it is under electrical bias. The device is biased using a constant current source, and the power supply pin voltage is monitored for changes.