Space view on Planet Earth and Sun Star rotating on its axis in black Universe. Milky Way in the background. Seamless loop with day and night city lights change. Elements of image furnished by NASA,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包
(Dobsonian) telescopes the focuser is secured to a mounting plate with four screws that can be adjusted to pitch or yaw the focuser axis in its fixed position on the side of the telescope tube until the focuser axis points back, via the secondary mirror, to the center of the primary ...
Shifting the relative phase of the two terms causes this pattern to rotate. In our experiment, rotating the half-wave plate shifts the phase—that is changing θ continuously. In the actual experiment, we first used weak coherent light (~104 photons per pulse) as the input signal. We set ...
on the other hand,hyperspectral imagescan be extremely large and their management, storage, and transmission can be extremely difficult. Thus, in several applications ofhyperspectral imageprocessing,data compressionbecomes mandatory. For instance, in Earth observation, hyperspectral images are acquired by ...
with respect to the choice of focus type, M2’s aperture size, corrector’s aperture size, maximum FOV to obtain the optimal configuration of the optical system. By using a couple of rotating zero deviation atmospheric dispersion corrector (ADC) made of LLF1HT and N-BK7 glass material, the...
CT utilizes a rotating 1D detector array around the patient body to calculate the Radon transform (Kak and Slaney, 2001) of a 2D object, which leads to a sequence of density measurements at different projection angles, namely sinogram as a 2D image in which each column of this representation...
A cooling system for a ball mill used for production of a lead oxide is disclosed. The system has an internal nozzle configured to introduce water into an interior of a rotating ball mill drum, and a water conduit on an exterior of the r... JJ Jaeger,K Tobias,S Morten,... 被引量:...
The method is realised by a device consisting of a fixed antenna, a disc modulators of the radiation of the elements placed in the object plane of the antenna, a horn made with possibility of rotating about the axis of the disc, serving for receiving and transmitting modulated radiation to ...
6. They are generally carried out around the periphery of a continuously rotating P/R drum or flexible belt. The charging step most commonly employs a corotron, a device with one or several thin wires largely surrounded by a grounded shield; the wires are held at a high enough voltage (...
Because fluid moves in three dimensions, planar PIV techniques require measurements in multiple planes or assumptions about the flow structure to generate 3D approximations of the flow. For example, counter-rotating vortex pairs are often assumed to be parts of the same vortex ring (Figure 4). Fi...