Wringing moist material in area: Astronaut demonstrates water’s fascinating property
Jun 23, 2022, 10:59 am
2 min learn
A video exhibiting astronaut Chris Hadfield of the Canadian House Company, wringing a moist material in area has change into widespread on the web.
The video is initially from 2013, and it has gone viral after being recirculated on social media.
The clip reveals Hadfield wringing a moist towel. Nonetheless, the water kinds a tube round it as an alternative of falling down. This is why.
Why does this story matter?
- In absence of gravity in area, all issues seem weightless and it’s fascinating to see how issues behave in another way than whereas on Earth.
- Easy demonstrations in area additionally present how far humanity has are available understanding scientific ideas, one thing which isn’t attainable on the bottom.
- And naturally, science might be enjoyable if defined in an fascinating method.
A short historical past of the experiment
The moist towel experiment carried out by Hadfield in 2013, was designed by highschool college students from Nova Scotia. They received a nationwide science contest carried out by the Canadian House Company.
The astronaut claimed that the water from the towel caught to his hand and had a gel-like texture.
In the meantime, the ‘soaking moist’ material stayed ‘floating like a canine’s chew toy.’
Why does water behave in another way in area?
The reply is floor tension-the property that permits a liquid to withstand an exterior drive due to the cohesive nature of its molecules.
And within the absence of gravity, the water’s molecules stick collectively, making a form of liquid gel.
Therefore, when Hadfield squeezed the water out of the fabric, floor stress stored it sticking to the fabric or his palms.
Lack of gravity in area additionally impacts astronauts psychologically
The sensation of weightlessness in area additionally impacts astronauts after they return to Earth. After coming again right here, lots of them drop issues on the bottom for some days as they overlook that they’re not in free fall.