Second live class held from China’s space station

BEIJING, March 23 (Xinhua) — The second stay class from China’s house station was held on Wednesday afternoon, delivered by Shenzhou-13 crew members Zhai Zhigang, Wang Yaping and Ye Guangfu to college students on Earth.

The category started at 3:40 p.m. (Beijing Time) and was attended by college students from three school rooms throughout China. The principle classroom was situated within the China Science and Expertise Museum, whereas others have been respectively arrange in Lhasa in southwest China’s Tibet Autonomous Area and Urumqi in northwest China’s Xinjiang Uygur Autonomous Area.

Wang, assisted by the opposite two crew members, carried out a number of scientific experiments, such because the crystallization of supersaturated resolution, a liquid bridge demonstration, water-oil separation and throwing objects below the zero-gravity situation, wonderful quite a few college students on Earth.

The 45-minute lecture additionally featured an introduction to the house science services and a real-time Q&A session with the scholars by way of video name, based on the China Manned House Company.

Within the first experiment of the category, Wang used a bag of supersaturated sodium acetate resolution to exhibit its crystallization in micro-gravity.

After Wang squeezed the answer from the bag, it turned a clear fluid ball floating in entrance of the digicam. Wang used a small stick coated with crystal nuclei to the touch the fluid ball and it rapidly turned crystallized.

“It appears like an ice ball, however as I contact it, I can really feel that it is heat,” Wang instructed the category.

The house trainer defined that the solubility of sodium acetate in water of upper relative temperature may be very excessive, and it very simply kinds a supersaturated resolution. Only a small hint of crystal nuclei causes the sodium acetate to crystallize, releasing lots of warmth.

One other micro-gravity experiment confirmed how you can separate oil from water in house. Wang ready a small bottle of oil and water, which have been separated on the begining, whereas the scholars on the bottom additionally had such bottles, permitting them to observe the process.

The trainer and college students all shook bottles to combine oil and water right into a fluid combination. The scholars discovered their combination regularly separated into oil and water once more, however the fluid in house remained as a combination.

When Wang requested for a way of separating water and oil in house, a pupil from Beijing steered swinging the bottle in a circle. Wang’s teammate Ye Guangfu tried the strategy and succeeded in separating the 2.

Wang stated that centrifugation, the easy precept behind the experiment, can play an necessary position in science experiments. She stated that the house station is provided with a centrifuge, which the crew can use to separate and put together medical samples equivalent to blood and urine.

The three astronauts went into house onboard the Shenzhou-13 spaceship and entered the nation’s house station on Oct. 16, embarking on the nation’s longest-ever crewed mission for house station building.

On Dec. 9, 2021, the trio delivered the primary stay lecture from China’s house station, exhibiting the scholars their residing and dealing areas on the Tianhe core module and a number of other scientific experiments below the zero-gravity situation.