An atom is 99.9% empty and everything is made up of atoms.
Does it mean that everything we see and feel is empty? Why is it not so? If an atom is almost empty, then why isn't everything invisible?
Atoms have vast empty space between the neutrons and electrons ( you can compare neutron as a small dot in the center of a football stadium ). So 99.9℅ is actually empty!
But you can't simply neglect the remaining 0.01% mass in an atom! Simply multiply that with a million, do you get the picture?
A human body weighing 154 pounds (70 kilograms) is comprised of 7 billion billion billion atoms, which is a 7 followed by 27 zeros. Multiply 0.01% with 7×10^24 you approximately get the human mass!
This was my understanding but there is also another debate,
Despite the vast number of atoms in the human body, we are still surprisingly full of empty space.
If all this empty space were squeezed out of the people who make up the human race, our bodies would become so compact that they could be contained in a box the size of a sugar cube.
Even more mind-blowing, the stars, planets, and everything they contain, including humans, makeup only 4 percent of the mass of the known universe. The remainder, scientists believe, is comprised of dark matter and dark energy, which are, as of yet, not well understood.
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