نتایج جستجو برای: celestial souls heavenly angels
تعداد نتایج: 28032 فیلتر نتایج به سال:
Stars and galaxies radiate photons. An astronomical image records photons—each originating from a particular celestial body or from background atmospheric noise—that pass through a telescope’s lens during an exposure. Multiple celestial bodies may contribute photons to a single image (e.g. Figure 1), and even to a single pixel of an image. Locating and characterizing the imaged celestial bodies...
Celestial positioning has been used for navigation purposes for many years. Stars as the extra-terrestrial benchmarks provide unique opportunity in absolute point positioning. However, astronomical field data acquisition and data processing of the collected data is very time-consuming. The advent of the Global Positioning System (GPS) nearly made the celestial positioning system obsolete. The n...
We solve the inverse scattering problem for multidimensional vector fields and we use this result to construct the formal solution of the Cauchy problem for the second heavenly equation of Plebanski, a scalar nonlinear partial differential equation in four dimensions relevant in General Relativity, which arises from the commutation of multidimensional Hamiltonian vector fields.
Birds can rely on a variety of cues for orientation during migration and homing. Celestial rotation provides the key information for the development of a functioning star and/or sun compass. This celestial compass seems to be the primary reference for calibrating the other orientation systems including the magnetic compass. Thus, detection of the celestial rotational axis is crucial for bird or...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید