Exact(3)
Considering the observed intensity on the two sidebands in comparison with previous studies20, we now assume a reasonable value of 105 detectable photons per second emitted by the QD.
But Daya Bay's nuclear reactors produce billions of trillions of electron antineutrinos every second, emitted by neutrons during a process called "beta decay," and scientists have finally been able to measure their metamorphosis as they pass through a series of detectors positioned outside the reactors.
Quantification was performed using the total photons per second emitted by each mouse after 30 min, 2 h, 5 h and 24 h of infection by defining regions of interest.
Similar(57)
Dr. Kaspi and Dr. Mallory Roberts, also of McGill, reported at the conference here that the pulsar is spinning at a rate of 14 times a second, emitting flashes of X-rays like an overcharged lighthouse beacon.
Male Anna's hummingbirds (Calypte anna), which look as if they're wearing bright-pink scarves, swoop at speeds over 20 meters per second, emitting a shriek like a startled rodent.
This effect can be understood as arising from the interference of sequential pulses emanating from a pulsed laser, where the first emitted pulse travels through the reference arm, and the second emitted pulse travels through a shorter sample arm.
They are first emitted from α/β interfaces and take a preferential orientation along their screw direction.
As Paris was its witness, a fledgling climate justice movement is no longer fighting merely against the carbon in the atmosphere, but the political and economic system that first emitted it there.
Inside each display line, a horizontal pulse was first emitted for 4.75 us, followed by the "back porch" (containing the color burst along with blanking for synchronization) for 4.75 us.
The total SO2 emissions were about 280 kt, with nearly two-thirds emitted during the first two weeks.
By time it arrives, it's traveled for over 13 billion years, but the object that emitted it is now some ~30 billion light years away, and the light is redder and longer-wavelength than when it was first emitted.
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