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Dust-resistant, waterproof lenses Canon Dust Donuts

18.01.2013

Canon's L Series lenses are not only distinguished by their high build quality and good optical performance. One of their features is also a high degree of protection against external influences, such as ingress of dust and moisture. Ordinary lenses do not have such protection, and when it rains, moisture may well seep into the camera at the junction of the removable optics with the "carcass".

A new project, Dust Donut, announced on Kickstarter, offers a primitive but effective solution - a ring that is inserted between the camera mount and the lens. According to the creator of the idea, professional photographer Tyler Sterbentz (Tyler Sterbentz), this simple ring protects against dust and moisture. Of course, it will not allow conventional lenses to become as reliable as Elks, but still, an additional degree of protection is unlikely to hurt. Moreover, the cost of such an accessory against the backdrop of the high cost of photographic equipment will not be too expensive - about $25. If the release becomes more massive, the price is likely to drop significantly.

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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 ... >>

The threat of space debris to the Earth's magnetic field 01.05.2024

More and more often we hear about an increase in the amount of space debris surrounding our planet. However, it is not only active satellites and spacecraft that contribute to this problem, but also debris from old missions. The growing number of satellites launched by companies like SpaceX creates not only opportunities for the development of the Internet, but also serious threats to space security. Experts are now turning their attention to the potential implications for the Earth's magnetic field. Dr. Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics emphasizes that companies are rapidly deploying satellite constellations, and the number of satellites could grow to 100 in the next decade. The rapid development of these cosmic armadas of satellites can lead to contamination of the Earth's plasma environment with dangerous debris and a threat to the stability of the magnetosphere. Metal debris from used rockets can disrupt the ionosphere and magnetosphere. Both of these systems play a key role in protecting the atmosphere and maintaining ... >>

Solidification of bulk substances 30.04.2024

There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>

Random news from the Archive

Synthesis of starch from carbon dioxide 06.10.2021

Chinese scientists were the first in the world to develop a method for the artificial synthesis of starch from carbon dioxide.

Starch is an essential component of cereals and is usually produced during photosynthesis. The process of starch synthesis in nature includes about 60 biochemical reactions and complex physiological regulation.

The research team has developed a way to artificially synthesize starch with just 11 basic reactions, achieving the first complete synthesis from carbon dioxide to starch molecules in the lab. The structure of synthetic starch is exactly the same as the structure of natural starch.

The efficiency of synthetic starch production is about 8,5 times that of traditional agricultural starch production.

According to the current technical parameters, the annual production of starch in a bioreactor with a capacity of one cubic meter is theoretically equivalent to the amount of starch obtained from an annual crop of a corn field in China with an area of ​​approximately 0,3 hectares, excluding energy costs.

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