Astronuc's latest activity
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Astronuc reacted to Fra's post in the thread Mold in Plastic Water Bottles? What does it eat? with
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There also is no thing as a closed system in practice :wink: Your closed bottle probably has a cap, and if it has ever been ever opened... -
Astronuc reacted to PAllen's post in the thread I Some confusion with the Binding Energy graph of atoms with
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I guess it is worth pointing out that if you have two nuclei with equal and opposite momentum collide perfectly and fuse, the initial... -
Astronuc replied to the thread I Some confusion with the Binding Energy graph of atoms.The graph shows the binding energy per nucleon, so it is the minimum energy need to remove a nucleon from the nucleus (on average). A... -
Astronuc reacted to Dale's post in the thread B Why would an atmosphere without greenhouse gasses be colder than with them? with
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No. Substantially more than it does now. That is the point. -
Astronuc reacted to russ_watters's post in the thread B Why would an atmosphere without greenhouse gasses be colder than with them? with
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The surface radiates and not all of that energy is absorbed by the atmosphere... -
Astronuc replied to the thread The Oldest Rock on Earth?.With regard to Western Australia, I meant to menton the Jack Hills, which "are best known as the source of the oldest material of... -
Astronuc replied to the thread The Oldest Rock on Earth?.I would hesitate to frame it as "the Earth's crust" forming, but instead consider that regions of the Earth's crust formed (solidified)...