Atoms in a grain of sand

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atoms in a grain of sand

Quote by James Joyce: “What must it be, then, to bear the manifold tor...”

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Kepler - The earth is an atom of a grain of sand (Earth to Universe) HD

The number of stars in the observable universe has been discussed in the question How do we estimate stars in the observable universe.

Craig’s Questions – Sand and Atoms

The First question came about following a conversation with someone who is studying maths. He Andy casually dropped the following phrase into the conversation about numbers, as a statement meant to inspire wonder. The statement did more than just that for me though, it raised my curiosity and I felt compelled to sit down and work it out for myself. Would it be as tall as me if they were still in their cases? How wide would it be if we staked them to only my height 6 ft? At first these types of statements or questions seem impossible to answer and if anyone delivered an answer confidently enough one way or another, you might just be inclined to believe them and move on with your day. This number tells us how many atoms there are in one mole of a substance i.

Started by Eman7 Board Chemistry. Started by Indranil Board Chemistry. Started by granpa Board General Science. Science News Features. Interviews Answers to Science Questions. How many atoms in a grain of sand? I have been studying a grain of sand under my very poweful 10 X magnifying glass.

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It only takes a minute to sign up. My estimation with this: bilions of galaxies bilions of stars per galaxy. If a grain is a fraction of mg, 1 g of grain has truly more atoms than stars in the universe. My answer to this does little more than repeat the conventional wisdom, but Pulsar's answer presents a very interesting alternative approach that ends up at about the same number.

This question comes from Sheldon Grimshaw. Is this possible?
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We also have this title available in several special poker book promotions directly from Two Plus Two Publishing. User Name Remember Me? I just thought about this and google gives me different results. I heard that there were about 50 million atoms in every cm, then I hear that there are 23 million million million in a grain of sand Why do you think these numbers are saying very different things about atoms?

2 COMMENTS

  1. Evtagsara says:

    Short answer: ~ 50 atoms. 50 quintillion (short scale) in the US, Canada or UK. 50 trillion (long scale) in the civilized.

  2. Deep B. says:

    I been reading there are more atoms in a grain of sand, than grains of sand on earth. And there are more atoms in your body than all the stars in the observable .

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