The estimation of grain size affects the accuracy of numerical flow and river bed configuration analyses. In order to measure the grain size distributions, sampling of sand and gravel is usually conducted at several points in a river, and it is time-consuming and costly to determine the grain ...
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Webb’s image is approximately the size of a grain of sand held at arm’s length, a tiny sliver of the vast universe. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying more distant galaxies, including some seen when the universe was less than a billion year...
It covers a patch of sky that is approximately the size of a grain of sand held at arm’s length by someone on the ground. The first photographs from the James Webb Space Telescope reach depths at infrared wavelengths beyond the deepest regions that took the Hubble Space Telescope weeks to...
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The company also reports that the camera module has a wafer design and is just 0.65 mm x 0.65 mm square—and it is just 1.158 mm thick, making it approximately the size of a grain of sand. OmniVision reps further note that its small size allows its use in more than justendoscopes—it...
[1] Above steep, wave-induced sand ripples, which occur extensively in shallow sea areas, the momentum transfer and suspended sediment dynamics are dominat... AG Davies,PD Thorne - 《Journal of Geophysical Research Oceans》 被引量: 106发表: 2005年 Image pickup apparatus, method of controlling...