The James Webb Space Telescope's 'Salty' Glasses are explained by NASA.
HIGHLIGHTED NEWS
On Christmas Day, the James Webb Space Telescope was launched.
Hubble will be succeeded by the James Webb Space Telescope.
The James Webb Space Telescope is the world's biggest space telescope.
WHY IN NEWS
we all knew this Hubble telescope is one of the prestigious mission of NASA. As these telescopes are used to observe deep space observations. This Telescope can only be expanded once it is in orbit, but it will succeed.
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As the $10 billion (approximately Rs. 74,100 core) James Webb Space Telescope completes all major deployments and enters a 'cooling' stage, NASA is providing some intriguing details about the telescope. There are certain lenses made of salt among them. But why do we need a 'salty' lens for our infrared telescope? Researchers building on the telescope explained why salt is so important to the deep space observatory in a new video. And the James Webb telescope employs three different types of salt lenses. Lenses come in a variety of shapes and sizes. Although most mirrors are reflecting lenses that bend light, others allow light to flow through them. Transmissive lenses are the second category of lenses. Infrared light, which acts differently than visible light, is crucial for James Webb. The difference between glass and salt is that glass absorbs infrared light whereas salt does not.
'Salts are more than something you sprinkle on your food,' says the narrator in NASA's film. A salt is a chemical compound that consists of a positively charged element and a negatively charged halide. They receive or lose a negatively charged electron to gain or lose charge. Sodium chloride is the most common form of salt, but it's not the only one. Lithium fluoride, Barium fluoride, and zinc selenide are examples of additional types.
NASA'S TWEET ON HUBBLE SPACE TELESCOPE : https://tinyurl.com/33jfdwth
However, space debris, like as micrometeoroids, pose a long-term hazard to these lenses.
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During a webcast, NASA Goddard Space Flight Center scientist Michelle Thaller stated that tiny collisions from micrometeorites are inevitable. However, NASA experts claim that they considered this aspect because the telescope is expected to last for ten years. They stated that they had prepared contingency measures to deal with this possibility. The sunshield's five stages guard the telescope from not just the sun but also dust and debris. A micrometeoroid, on the other hand, may strike the telescope from any direction and do damage to any portion of it. It is possible to account for a mirror that is damaged. On December 25, NASA launched the James Webb Space Telescope, which has been unfolding in space for the past two weeks. Major deployments, such as the primary and secondary mirror, have been completed.
read more about Hubble telescope :
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