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  3. David Hahn - Wikipedia

    en.wikipedia.org/wiki/David_Hahn

    David Charles Hahn (October 30, 1976 – September 27, 2016), sometimes called the "Radioactive Boy Scout" and the "Nuclear Boy Scout" was an American nuclear radiation enthusiast who built a homemade neutron source at the age of seventeen.

  4. Atom laser - Wikipedia

    en.wikipedia.org/wiki/Atom_laser

    They produce a well controlled continuous beam spanning up to 100 ms, whereas their predecessor produced only short pulses of atoms. However, this does not constitute a continuous atom laser since the replenishing of the depleted BEC lasts approximately 100 times longer than the duration of the emission itself (i.e. the duty cycle is 1/100).

  5. Optical tweezers - Wikipedia

    en.wikipedia.org/wiki/Optical_tweezers

    The beam is typically focused by sending it through a microscope objective. Near the narrowest point of the focused beam, known as the beam waist, the amplitude of the oscillating electric field varies rapidly in space. Dielectric particles are attracted along the gradient to the region of strongest electric field, which is the center of the beam.

  6. Laser detuning - Wikipedia

    en.wikipedia.org/wiki/Laser_detuning

    The magnetic field induces a spatially varying Zeeman shift, that when coupled with proper molasses beam red-detuning, preferentially pushes the atoms towards the center of the trap. The detuning of the laser in a MOT ensures that the momentum kick on the atoms is only imparted upon the atoms moving away from the center of the trap, effectively ...

  7. Parabolic aluminized reflector - Wikipedia

    en.wikipedia.org/wiki/Parabolic_aluminized_reflector

    PAR64 sealed beam lamps are often used for these purposes; they are typically available with 250, 500 or 1000 watt power ratings. Beam spreads are designated as FL ( flood ), SP ( spot ), NSP (narrow spot), and VNSP (very narrow spot), as stamped on the back of the lamp's reflector.

  8. NBA All-Star Game to reportedly adopt pickup-style format for ...

    www.aol.com/sports/nba-star-game-adopt-pickup...

    The NBA and commissioner Adam Silver were eager to make changes to the All-Star Game after last year's contest wasn't very competitive and finished with a final score of 211-186.

  9. Cherenkov radiation - Wikipedia

    en.wikipedia.org/wiki/Cherenkov_radiation

    Cherenkov radiation glowing in the core of the Advanced Test Reactor at Idaho National Laboratory. Cherenkov radiation (/ tʃ ə ˈ r ɛ ŋ k ɒ f / [1]) (also known as Čerenkov radiation [2]) is electromagnetic radiation emitted when a charged particle (such as an electron) passes through a dielectric medium (such as distilled water) at a speed greater than the phase velocity (speed of ...

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