How does something become tangible? How many atoms are needed to be

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Tangible objects are defined by the arrangement and number of atoms, with Avogadro's number (approximately 6 x 10^23) illustrating the scale needed for visibility and physical interaction. Even a single atom can be considered tangible in specific contexts, but practical tangibility typically requires a large assembly of atoms. For instance, a human hair is about half a million carbon atoms wide, emphasizing the complexity of atomic structures in creating visible matter. The discussion highlights the relationship between atomic quantity and the perception of tangibility. Understanding these concepts is crucial for grasping the nature of physical objects.
harp AP 2010
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How does something become tangible? How many atoms are needed to be able to see/hold something?
 
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For comparison you can use Avogadro's number (approx 6*1023). For example this is number of molecules in 18 grams of water.
 


A hair is roughly half a million carbon atoms wide.
 
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