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In the mirror of the moon

20.04.2002

Looking closely at the narrow crescent of the Moon during the new moon, you can see that the part of our natural satellite not illuminated by the Sun is still slightly visible (especially if you look at least through weak binoculars). It is illuminated by the same sunlight, but reflected from the Earth.

French astronomers, having studied the spectrum of this weak light, found, firstly, that blue tones predominate in it (it’s not for nothing that the Earth is called the “blue planet”!), And secondly, this spectrum lacks light with a wavelength of less than 725 nanometers. It turns out that the fact is that these wavelengths are absorbed by the Earth's vegetation during photosynthesis. Thus, our forests and meadows are visible from cosmic distances.

The authors of the discovery believe that the discovered phenomenon can be used to search for plant life on other planets.

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Bioelectronic soil accelerates plant growth 30.12.2023

Researchers from Linköping University in Sweden have unveiled an innovative bioelectronic soil that can significantly accelerate plant growth in hydroponic systems. Hydroponics, as we know, is a method of growing plants without soil, using nutrients. After integrating the new material into hydroponic systems, scientists noticed that electrical signals stimulated plant growth by 50%.

Bioelectronic soil includes organic matter mixed with the leading polymer Pedot, which is widely used in sensors and OLED displays. Study leader Eleni Stavrinidou emphasizes that soil conductivity is a key factor for stimulating plant roots.

During the experiment, over 15 days, scientists studied the effect of electrical signals on barley sprouts. Even at a low voltage of 0,5 V, the roots responded actively, which led to a significant increase in plant size. Particularly effective was the improvement in the processing of nitrogen, one of the main nutrients for plant growth.

Stavrinidou notes that, despite the positive results, the mechanism by which stimulation affects growth processes requires additional research. However, bioelectronic soil may provide a solution to increase yields in conditions where environmental factors interfere with normal plant growth.

In addition, this technology can reduce the use of fertilizers in agriculture. According to the US Department of Agriculture, the number of farms in the country has been steadily declining due to climate change and economic difficulties.

The introduction of bioelectronic soil into hydroponic systems not only enhances plant growth, but also offers an energy-saving solution, reducing water and energy consumption on farms. Such innovations play an important role in improving agricultural efficiency and ensuring food security.

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