Where did blue eyes come from? Free Technical Library News

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Where did blue eyes come from

08.12.2008

Danish geneticist Hans Eiberg, after 12 years of research on the prevalence of blue eyes in different peoples in all corners of the planet, came to the conclusion that the first blue-eyed person appeared 6-10 thousand years ago.

He lived somewhere northwest of the Black Sea. Before one child had a mutation in the gene responsible for the synthesis of the dark pigment melanin, all of humanity had gray, black or brown eyes.

Now blue-eyed people make up from 20 to 40% of the population of different European countries.

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Camera for filming color video in absolute darkness 28.07.2023

Canon introduced the MS-500, equipped with a unique image sensor that is incredibly sensitive to even single photons. This innovative product was the first commercial device in the world with such functionality.

The MS-500 is capable of capturing high quality color video in total darkness using starlight as a backdrop. Thanks to the ability to use interchangeable telephoto lenses, it is able to record video with objects located at a considerable distance, even tens of kilometers.

Priced at $25, the MS-000 is equipped with Canon's exclusive SPAD image sensor, an array of single photon avalanche diodes. The first prototypes of SPAD sensors were presented by the company in 500, and then their mass production began. Each pixel of this sensor is able to respond to single photons at high speed, providing not only high sensitivity to low light, but also the ability to shoot at high speed, approaching the frozen state of the light beam.

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The MS-500's camera resolution surpasses the standard 1080p by adopting a new architecture. It is noted that it has an exceptional time resolution performance even among SPAD sensors, as well as low noise and sensitivity to the near infrared spectrum. This allows you to accurately determine the distance to the shooting object and its speed.

In addition to the camera, the use of Canon telephoto bayonet lenses expands shooting possibilities, allowing you to capture objects at considerable distances, up to "tens of kilometers". Although this feature is unlikely to be used in a domestic environment, the military and rescuers will probably be able to appreciate its practical value.

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