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

[harp AP 2010]

How does something become tangible? How many atoms are needed to be able to see/hold something?

 

[mathman]

For comparison you can use Avogadro's number (approx 6*10²³). For example this is number of molecules in 18 grams of water.

 

[Studiot]

Just one atom will do.

Here is an atomic typewriter by IBM

http://www.fourmilab.ch/autofile/www/section2_84_14.html

 

[Dr Lots-o'watts]

A hair is roughly half a million carbon atoms wide.