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13k posts
 
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Q&A How Would the Sport of Wrestling Change in a Microgravity Environment?

"How would" has no answer The question "How would wrestling change" is unanswerable. There are many different ways in which a sport could change in a new environment. As with most sports, "wrestl...

posted 1y ago by trichoplax‭

Answer
60%
+1 −0
Q&A How would an interstellar spaceship's speedometer work if everything else is moving?

Whatever means you use, it would make sense to have two measurements: Time To Destination (TTD) relative to yourself, and TTD relative to the destination. E.g one year for you, two years for the pe...

posted 1y ago by Strider‭

Answer
75%
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Q&A How Would the Sport of Wrestling Change in a Microgravity Environment?

Drastically. For one thing, pinning your opponent's shoulder to the mat is no longer possible. Very different criteria would be required to determine winning. The different objectives would in t...

posted 1y ago by Olin Lathrop‭

Answer
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Q&A A hair product which is both a lipid ointment and a gel

Yes. Although this may be streching your definition of oil a bit. The oil product could host some sort of microfauna that cure the product by building EPS microstructures. https://en.m.wikipedia....

posted 1y ago by James McLellan‭

Answer
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Q&A How Would the Sport of Wrestling Change in a Microgravity Environment?

How would competitive wrestling change in a microgravity environment?

2 answers  ·  posted 1y ago by James McLellan‭  ·  last activity 1y ago by trichoplax‭

Question physics sports
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Q&A Meaning of Non-Locality?

Theory If I am understanding this history of this correctly, in the 1920s the mathematical process of converting measurements with a certain amount of measurement error into numbers, then doing yo...

0 answers  ·  posted 1y ago by James McLellan‭  ·  edited 1y ago by James McLellan‭

Question physics
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Q&A Discussion of Aerogel Orbital Rings [closed]

Orbital rings are a proposed megastructure intended to dramatically reduce the cost to enter or exit a planetary gravity well. The ring is a solid structure, belting around the planet like a hula h...

0 answers  ·  posted 1y ago by James McLellan‭  ·  closed 1y ago by Canina‭

Question engineering phsyics
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Q&A What Would a Femtometer Scale Utility Fog Be Useful For?

Utility fog is a swarm robotics concept in which a mesh of robots barely larger than a grain of pollen (5 micrometer ( $10^{-6} $ m ) bodies and 50 micrometer arms) are dodecahedrons (12 sided pol...

0 answers  ·  posted 1y ago by James McLellan‭  ·  edited 1y ago by James McLellan‭

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Q&A PVA glue curing process

Looks like it may just be mechanical. According to this article, if true, you can rehydrate white glue with water and heat. https://simpleglue.com/how-to-revive-elmers-glue/

posted 1y ago by James McLellan‭

Answer
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Rigorous Science Nuclear energy storage

Yes, nuclear fission is reversible. Actually, it's more like fission is the reverse of fusion. Fusion is what stars do. Mostly stars fuse hydrogen to make helium. Fusing light elements releases...

posted 1y ago by Olin Lathrop‭

Answer
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Rigorous Science Electricity from nuclear decay

Can electricity be generated directly from nuclear decay? It occurred to me that in alpha decay two protons fly off rapidly, leaving their associated electrons behind. If the alpha particle was ca...

1 answer  ·  posted 1y ago by chris-barry‭  ·  last activity 1y ago by James McLellan‭

Question energy nuclear
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Rigorous Science Nuclear energy storage

Could nuclear energy be a basis for energy storage with foreseeable technology? One approach would be to use excited nuclear states, but I suspect they would be too unstable to ever be useful. Al...

1 answer  ·  posted 1y ago by chris-barry‭  ·  last activity 1y ago by Olin Lathrop‭

Question energy nuclear
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Rigorous Science Do plants need ambient oxygen?

Do {any, some, all} {unicellular, multicellular} plants require free oxygen? For example, would a cabbage asphyxiate over night, or even in daylight, in an oxygen-free atmosphere?

1 answer  ·  posted 1y ago by chris-barry‭  ·  last activity 1y ago by trichoplax‭

Question biology
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Rigorous Science Producing hydrocarbons by electrolysis

When water is electrolysed with graphite electrodes some of the oxygen reacts immediately with the anode to produce carbon dioxide. Does a similar reaction ever occur at the cathode, producing meth...

0 answers  ·  posted 1y ago by chris-barry‭

Question chemistry
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Meta How can we grow this community?

Two ideas, prompted by a question I submitted recently. (About the chemistry of PVA glue.) Firstly, the topics are too narrow and exclude many, quite possibility the majority, of likely questions....

posted 1y ago by chris-barry‭  ·  edited 1y ago by chris-barry‭

Answer
62%
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Q&A PVA glue curing process

What happens when PVA glue sets? I am curious about the white PVA glue that is commonly used for bonding wood and paper. Although an Internet search find lots of articles they mostly seem to be ne...

2 answers  ·  posted 1y ago by chris-barry‭  ·  last activity 8mo ago by Mithical‭

Question materials
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Q&A Are heat waves a symptom of 'rebound effect' after climate change deceleration during COVID-19 lockdowns?

During the summer of 2022 Europe has had several heat waves. As described in 2022 European heat waves: Climatologists linked the extreme heat to the impact of climate change, and experts predict...

0 answers  ·  posted 1y ago by fedorqui‭  ·  edited 1y ago by fedorqui‭

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Q&A How to reduce tornados in the US Great Plains?

Tornados and the thunderstorms that often spawn them are driven by rising columns of air. Such "thermals" are stronger and more likely in open terrain, like is prevalent in Tornado Alley. Let the...

posted 1y ago by Olin Lathrop‭  ·  edited 1y ago by Olin Lathrop‭

Answer
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Q&A How to reduce tornados in the US Great Plains?

How could I modify an alternate Earth to have less tornados in the American Great Plains area known as Tornado Alley? Maybe make the Rockies lower? Introduce an east-west range of mountains or high...

1 answer  ·  posted 1y ago by Aaron‭  ·  last activity 1y ago by Olin Lathrop‭

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Q&A Price's Law Sanity Check

For the sake of a fictional story, you should be thoroughly aware that the author is playing as a god. The laws are what you want them to be, and what you say happens is what happens. I am not awa...

posted 1y ago by dsr‭

Answer
75%
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Q&A Price's Law Sanity Check

Price's Law is a hypothesis that in an organization, or across an industry, roughly half the productive output is being generated by a number of people equal to the square root of those participati...

1 answer  ·  posted 2y ago by James McLellan‭  ·  last activity 1y ago by dsr‭

Question society economy
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Q&A How can Single Vision lenses slow myopia for adults too? [closed]

These WorldFamous companies advertise that their lenses can control myopia for kids, NOT adults. But none of these lenses are approved by FDA. How can they work for adults too? Essilor Stellest ...

0 answers  ·  posted 2y ago by TextKit‭  ·  closed 2y ago by Canina‭

Question optics
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Q&A If this earth were cube shaped would it be possible during Magellanic era using a float ship to figure out that the earth is cube shaped?

While the other posts did already explain the issues with the cube-formed Earth, I just want to give a feeling of the dimensions we are speaking of. Imagine that the centre of the cube's faces are...

posted 2y ago by celtschk‭  ·  edited 2y ago by celtschk‭

Answer
71%
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Q&A What are the Ground Effects of the South Atlantic Anomaly?

I was recently introduced to the South Atlantic Anomaly. As I understand, for satellites and space craft, this is a natural feature that can wreck space craft by taking even computers designed fo...

0 answers  ·  posted 2y ago by James McLellan‭  ·  edited 2y ago by James McLellan‭

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Meta How can we grow this community?

Under "Making a Good First Impression", a few mechanical notes from someone just making the transition from WB.SE to Codidact - Question titles should probably be at the top of the page, inste...

posted 2y ago by James McLellan‭  ·  edited 2y ago by James McLellan‭

Answer