Scientists have learned to remotely identify signs of life

Scientists led by the University of Bern and the National Center of Competence for Research

(NCCR) introduced PlanetS technology.They determine the key molecular property of all living organisms from a helicopter flying several kilometers above the ground. Measurement technology can also open up possibilities for remote sensing.

The researchers explained that most of the moleculesin the cells of living organisms are chiral. However, they are usually found in "left-sided" or "right-sided" variants - they are homochiral. But this molecular feature is a characteristic property of life, the so-called biosignature.

An international team of researchers was able todetect this signature from a distance of 2 km and at a speed of 70 km / h. “The main achievement of the project is that these measurements were carried out on a moving, vibrating platform, but we still found these biosignatures in a matter of seconds,” the scientists noted.

American startup has created a headset for reading minds

“When light reflects off biological matter,part of the electromagnetic waves of light will spiral clockwise or counterclockwise. This phenomenon is called circular polarization and is caused by the homochirality of biological matter. Such spirals of light do not form in abiotic inanimate nature, ”explained the first author of the study, Lucas Patti.

Measuring this circular polarization is challenginga task. The signal is quite weak and usually less than one percent of the reflected light. To measure it, the team developed a special device called a spectropolarimeter. It consists of a camera equipped with special lenses and receivers capable of separating circular polarization from the rest of the light.

Read more

Damage to the skin, brain and eyes: how COVID-19 enters human organs

It turned out that huge cosmic filaments in the Universe rotate like drills

Scientists have found out who is at risk of re-contracting COVID-19 and when

Facebook Notice for EU! You need to login to view and post FB Comments!