The propagation of light in inhomogeneous media, and in particular in biological tissues, results in wavefront distortions and scattering which impose major limitations in many applications, from microscopy to nanosurgery.
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The precision of any measurement is limited by quantum mechanics. Yet, in practice, hardly any measurement reaches its quantum limits. This is because dephasing typically influences measurement device, rendering their sensitivity below its physical limits.
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On September 14, 2015 the two LIGO gravitational wave detectors in Hanford, Washington and Livingston, Louisiana registered a coincident signal conforming to the gravitational waveform expected from the merger of two massive, compact objects.
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Bose-Einstein condensation has been observed with cold atomic gases, quasiparticles in solid state systems as polaritons, and more recently with photons in a dye-filled optical microcavity.
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