Liquid which turns into a ball?

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    Ball Liquid
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Discussion Overview

The discussion centers around the concept of a liquid that can transform into a ball, exploring the properties of viscosity and density. Participants consider various substances and phenomena, including shear-thickening behavior and potential optical illusions related to the appearance of such liquids.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about a liquid that can form a ball based on its viscosity and density, explicitly excluding water.
  • Another participant explains the phenomenon of shear-thickening, where a liquid's viscosity increases under pressure, allowing it to behave like a solid temporarily.
  • A link is provided to an article discussing the science behind "invisible water balls," suggesting that the observed behavior may involve optical properties and possibly sleight of hand.
  • One participant expresses skepticism about the application of viscosity concepts in the context of the original inquiry, indicating a belief that a different liquid might be involved.
  • Another participant warns against consuming the water orbs mentioned, humorously noting potential adverse effects, while also sharing a link to edible and biodegradable water orbs.

Areas of Agreement / Disagreement

Participants exhibit a mix of agreement and disagreement, particularly regarding the nature of the liquid in question and the applicability of viscosity concepts. There is no consensus on the specific liquid or mechanism that allows for the formation of a ball.

Contextual Notes

Some assumptions about the properties of the liquids discussed remain unverified, and the discussion does not resolve the specifics of the mechanisms involved in the transformation into a ball.

Raghav Gupta
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Is there any liquid based on viscosity and density that changes into ball.

Obviously here, the liquid cannot be water.
Other thing can be that some chemical is applied in hand( This doesn't make sense I think).
 
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To answer your question (regardless of the video), the behavior you are looking for is known as shear-thickening: when a force/pressure is applied to the substance, its viscosity can dramatically increase, thus exhibiting behaviors characteristic of a solid and not a liquid. Stop applying the force/pressure and the viscosity once again decreases, and thus it flows, like a liquid. The branch of physics that studies this odd behavior is known as rheology.

Now, as far as the video itself is concerned, this seems to be a magic trick that involves optical properties of water as well as the ball and/or sleight of hand.
 
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JoePhysics said:
Now, as far as the video itself is concerned, this seems to be a magic trick that involves optical properties of water as well as the ball and/or sleight of hand.
This.
 
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Understood. Thanks all of you.
That viscosity concepts are not being applied here. I thought initially that it would have been a different liquid.
 

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