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The iPhone 11 Pro and Pro Max both include a triple-lens 12MP rear camera array. There is one ƒ/2.4 ultra-wide-angle lens with a 120-degree field of view and 2× optical zoom out, one ƒ/1.8 wide-angle lens, and one ƒ/2.0 telephoto lens with 2× optical zoom in.
Consequently, a gravitational lens has no single focal point, but a focal line. The term "lens" in the context of gravitational light deflection was first used by O. J. Lodge, who remarked that it is "not permissible to say that the solar gravitational field acts like a lens, for it has no focal length". [11]
While gravitational lensing preserves surface brightness, as dictated by Liouville's theorem, lensing does change the apparent solid angle of a source. The amount of magnification is given by the ratio of the image area to the source area. For a circularly symmetric lens, the magnification factor μ is given by
The iPhone 11 and 11 Pro series introduced an ultrawide lens; the latter two became the first triple-camera iPhones. The 11 has a dual-lens setup, lacking the telephoto lens of the 11 Pro and 11 Pro Max. The front camera is now capable of recording video at 4K as a result of a new 12 MP sensor, and can also capture slow-motion footage.
The geometry of gravitational lenses. In the following derivation of the Einstein radius, we will assume that all of mass M of the lensing galaxy L is concentrated in the center of the galaxy. For a point mass the deflection can be calculated and is one of the classical tests of general relativity.
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Strong gravitational lensing is a gravitational lensing effect that is strong enough to produce multiple images, arcs, or Einstein rings. Generally, for strong lensing to occur, the projected lens mass density must be greater than the critical density, that is . For point-like background sources, there will be multiple images; for extended ...
The Apple A13 Bionic is a 64-bit ARM-based system on a chip (SoC), designed by Apple Inc., part of the Apple silicon series. [2] It appears in the iPhone 11, 11 Pro/Pro Max, the iPad (9th generation), [3] the iPhone SE (2nd generation) [4] and the Studio Display. [5]