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optics

number of breaks: 3

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Mitochondria as microlenses in the eye – the evolution of an improved camera sensor

The back of the eye is lined with a layer of specialized light-sensitive neurons in the retina, arranged in a mosaic, called photoreceptors. Each photoreceptor has a tapered elongated shape—like a bottle—oriented perpendicular to the retina and pointing toward the pupil of the eye. The... click to read more

  • John M. Ball | Staff Scientist at Retinal Neurophysiology Section, National Eye Institute, National Institutes of Health
  • Wei Li | Senior Investigator at Retinal Neurophysiology Section, National Eye Institute, National Institutes of Health
Views 511
Reading time 4 min
published on Oct 21, 2022
Making non-magnetic photons feel a taste for magnetism

Light consists of chargeless particles called photons. While electrons, being charged, get deflected into curved paths when placed in a magnetic field, the chargeless photons do not feel a real magnetic field the same way. Devising an “artificial” or “fictitious” magnetic field for photons would... click to read more

  • Avik Dutt | Postdoctoral Scholar at Ginzton Laboratory and Department of Electrical Engineering, Stanford University, Stanford, USA
  • Shanhui Fan | Professor at Ginzton Laboratory and Department of Electrical Engineering, Stanford University, Stanford, USA
Views 3520
Reading time 3.5 min
published on Oct 19, 2020
Silencing a quantum drum

To a classical physicist, there is no fundamental limit to how well you can measure something. A classical object, for example, always exists in a well-defined position; if you want to know that position with better accuracy, you simply build a better microscope. The story... click to read more

  • David Mason | Postdoctoral Research Fellow at Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
  • Massimiliano Rossi | PhD student at Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
  • Albert Schliesser | Professor at Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
Views 4225
Reading time 4 min
published on Feb 27, 2019