backscatter phenomenon

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• Glory (optical phenomenon) — A glory is an optical phenomenon appearing much like an iconic Saint s halo about the head of the observer which is produced by light backscattered (a combination of diffraction, reflection and refraction) towards its source by a cloud of… …   Wikipedia

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• Orb (optics) — A single orb in the center of the photo, at the person s knee level The term orb describes unexpected, typically circular artifacts that occur in flash photography sometimes with trails indicating motion especially common with modern compact and… …   Wikipedia

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• Electron diffraction — is a technique used to study matter by firing electrons at a sample and observing the resulting interference pattern. This phenomenon occurs due to the wave particle duality, which states that a particle of matter (in this case the incident… …   Wikipedia

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• Ionosphere — The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner …   Wikipedia

• Underwater photography — is the process of taking photographs while under water. It is usually done while scuba diving, but can be done while snorkeling or swimming.OverviewUnderwater imaging is considered an especially challenging area of photography, since it requires… …   Wikipedia