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Most complicated challenge in space begins, unfolding $10 bn James Webb Telescope

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2 years ago

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Most complicated challenge in space begins, unfolding bn James Webb Telescope

On the second day after the James Webb telescope passed the height of the moon, the engineers embarked on the most challenging task of the future-deploying the sun visor. As the observatory begins operation at the end of January, the five-layer shield will protect the equipment on the telescope from the heat generated by the sun, moon, and earth.

The mission was successfully deployed. The front and rear consisted of five protective covers about the size of three tennis courts. They were made of very thin Kapton material, about one to two thousandths of an inch thick, and only included 140 release mechanisms, 70 hinge components, 8 deployment motors, bearings, springs, gears, 400 pulleys, and a total length of 1,312 feet of cables. All of these must work perfectly to deploy the shield.

The engineers stated that for deployment, the 107 sunshade release mechanisms need to be fired according to the prompts to fully open the sunshade. That is 107.

“The unfolding of the pallet marks the beginning of the deployment of Weber’s main structures and the beginning of the sun visor deployment phase, which will last at least until this Sunday,” NASA said. Among them are Weber’s most unpredictable and complex tray structure component: sun visor. The tray contains five carefully folded sunshade films, as well as the cables, pulleys and release mechanisms that make up the Webb sunshade.

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NASA updated in its blog that although the actual movement of lowering the front pallet from the resting position to the unfolded position took only 20 minutes, and the lowering of the rear pallet took only 18 minutes, the entire process required several Hours, because dozens of additional steps are required.

“Deploying these structures includes closely monitoring the temperature, manipulating the observatory to provide the optimal temperature, turning on the heater to heat key components, activating the release mechanism, configuring the electronics and software, and finally locking the tray in place,” NASA said.

Complete News Source : INDIATODAY

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Patterns of behaviour that emerge after trauma

Published

1 year ago

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May 8, 2023

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Patterns of behaviour that emerge after trauma

Trauma is a deeply distressing or disturbing experience that can leave a lasting impact on a person’s mental and emotional health. It can result from a range of events, such as natural disasters, accidents, physical or emotional abuse, or military combat. Trauma can have a significant effect on a person’s behavior and can manifest in various ways. Here are some patterns of behavior that often emerge after trauma:

  1. Hyperarousal: After experiencing trauma, a person may feel constantly on edge, with heightened levels of anxiety and tension. This can manifest as irritability, restlessness, and difficulty sleeping.
  2. Avoidance: Trauma can also cause a person to avoid situations, people, or places that remind them of the traumatic experience. This can lead to social withdrawal, isolation, and a loss of interest in previously enjoyable activities.
  3. Emotional numbness: Trauma can cause a person to feel emotionally disconnected or numb, making it difficult for them to experience positive emotions such as joy or love.
  4. Hypervigilance: A person who has experienced trauma may be hyper-aware of their surroundings and perceive threats where none exist. This can lead to an increased sense of danger, which can trigger anxiety or panic attacks.
  5. Flashbacks: Trauma can cause a person to experience vivid and intrusive memories of the traumatic event. These flashbacks can be triggered by a range of stimuli, such as sights, sounds, or smells.
  6. Guilt and shame: Trauma can cause a person to experience feelings of guilt, shame, and self-blame. They may feel responsible for what happened to them, even when it was beyond their control.
  7. Substance abuse: Trauma can lead to the use of drugs or alcohol as a way of coping with difficult emotions. This can quickly become a self-destructive pattern of behavior that exacerbates the trauma.

It’s important to note that not everyone who experiences trauma will display all of these behaviors, and that each person’s response to trauma is unique. However, recognizing these patterns of behavior can help individuals and their loved ones identify when trauma may be a contributing factor to mental and emotional health challenges. Seeking professional support, such as therapy or counseling, can help individuals process their trauma and learn healthy coping mechanisms to manage their behavior.

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