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Ultra-bright yellow LED L-7113WYC

23.04.2004

KINGBRIGHT has released an ultra-bright yellow L-7113WYC LED in a 5 mm package with leads.

The LED has the following characteristics: brightness at a current of 20 mA 2500.3500 mcd, viewing angle 20°, direct voltage drop 2,3.2,8 V. The maximum allowable current is 30 mA, while the LED dissipates power 120 mW. The device operates in the temperature range from -40 to +85°C.

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Martian soil - radiation protection 22.10.2012

European Space Agency specialists, together with scientists working at the GSI accelerator in Germany, will test the potential suitability of lunar and Martian soil as a radiation shield.

During this two-year ESA project, it is planned to test whether the lunar and Martian soil can protect astronauts from cosmic radiation. This is of great importance for the future exploration of the Moon and Mars, as it affects the design of the first lunar and Martian settlements, the choice of equipment and the cost of expeditions.

ESA specialists had to use in their project the only accelerator in Europe capable of accelerating heavy atomic nuclei to ultra-high speeds - it is with such particles that astronauts will have to meet outside the Earth. The accelerator is located at the Helmholtz Center for Heavy Ion Research (GSI).

GSI simulates high-energy galactic radiation, which has already tested the protective properties of such common materials as aluminum, water, polyethylene, and a number of composites. Now, based on data on the conditions on the Moon and Mars, they will create a model of the soils of these celestial bodies and test their ability to delay cosmic radiation.

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Currently, scientists know that water and polyethylene are better at protecting against cosmic radiation than, for example, aluminum. The best result is shown by a new hydrogen-saturated material developed by scientists from the British company Cella Energy. Interestingly, this material was originally created to store hydrogen fuel. However, for the construction of permanent lunar and Martian bases, the best option would be to use local materials. Therefore, the ESA focused on the alien soil.

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