/u/pudding_world's posts in /r/askscience

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It's my understanding that when we try to touch something, say a table, electrostatic repulsion keeps our hand-atoms from ever actually touching the table-atoms. What, if anything, would happen if the nuclei in our hand-atoms actually touched the nuclei in the table-atoms?

3301 upvotes

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Why does paper become translucent when it gets wet?

2062 upvotes

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What exactly is full width half maximum and why it is so often used when discussing various signals?

10 upvotes

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How do ocean waves work? What's going on there?

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How does an embryo know what shape to take? As in, how does the roundish embryo become a pig-shaped pig, or a human-shaped human?

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Does the distance between water and a surface change depending on the hydrophobicity of the surface?

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What is a metallic bond?

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Since energy is conserved in the universe, does that imply that there is a finite amount of energy within the universe?

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Is there any evidence to suggest that the subatomic particles we know of now are not made of smaller particles, which are made of smaller particles, which are made of smaller particles, etc?

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I've heard that the most current physics models state that all basic particles are simply excitations of a series of quantum fields. If this is true, then would it be reasonable to imagine the universe as a series of peaks on a massive intensity field?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
It's my understanding that when we try to touch something, say a table, electrostatic repulsion keeps our hand-atoms from ever actually touching the table-atoms. What, if anything, would happen if the nuclei in our hand-atoms actually touched the nuclei in the table-atoms?	3301
Why does paper become translucent when it gets wet?	2062
What exactly is full width half maximum and why it is so often used when discussing various signals?	10
How do ocean waves work? What's going on there?	5
How does an embryo know what shape to take? As in, how does the roundish embryo become a pig-shaped pig, or a human-shaped human?	5
Does the distance between water and a surface change depending on the hydrophobicity of the surface?	4
What is a metallic bond?	3
Since energy is conserved in the universe, does that imply that there is a finite amount of energy within the universe?	3
Is there any evidence to suggest that the subatomic particles we know of now are not made of smaller particles, which are made of smaller particles, which are made of smaller particles, etc?	3
I've heard that the most current physics models state that all basic particles are simply excitations of a series of quantum fields. If this is true, then would it be reasonable to imagine the universe as a series of peaks on a massive intensity field?	2