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When did summer time start? Detailed answer
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Did you know?
When did summer time start?
Daylight saving time was introduced during the First World War to save electricity.
Author: Mendeleev V.A.
Random interesting fact from the Great Encyclopedia:
What are brown dwarfs?
According to modern theoretical concepts, only objects with a mass exceeding the mass of Jupiter by 80 or more times become real stars. Objects with a mass less than 17 Jupiter masses are destined to become planets.
Brown dwarfs are objects with an intermediate mass between the two types described above. They are too large to be considered planets, but not large enough for thermonuclear reactions characteristic of stars to occur inside them (thermonuclear reactions can occur in their depths only with the most "light-burning" isotopes).
The existence of these barely warm, and therefore dark and difficult to distinguish objects, has only recently been experimentally proven (with the help of the Hubble Space Telescope).
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Latest news of science and technology, new electronics:
Machine for thinning flowers in gardens
02.05.2024
In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers.
... >>
Advanced Infrared Microscope
02.05.2024
Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>
Air trap for insects
01.05.2024
Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>
| Random news from the Archive buttercup secret
19.05.2012
The bright yellow color of the buttercup attracts pollinating insects. What provides such a bright, downright shining yellow color of the petals?
Botanists from the University of Cambridge, having studied the structure of the buttercup petal, found that the yellow pigment is in the thin upper layer of the petal, and under it lies a layer of cells with starch. Round grains of starch refract and reflect light in much the same way as microscopic glass beads that are included in the coating of reflective road signs. Swinging in the wind, yellow flowers seem to flash, sending signals to insects.
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