How do S orbital nodes work? | AskScience Blog

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Sunday, December 11, 2016

How do S orbital nodes work?

How do S orbital nodes work?


How do S orbital nodes work?

Posted: 10 Dec 2016 09:33 PM PST

I was reading in my O Chem book and reached nodes. So for the 1s node, is it like a ballon where an electron can be inside or outside, just not on the surface? Or is it a solid sphere where electrons cannot be?

submitted by /u/fuzzyglory
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When we say that a rotating gyroscope's axis is 'fixed', it is fixed relatively to what?

Posted: 11 Dec 2016 12:11 AM PST

Certainly not relative to Earth, as we can actually use gyroscopes to detect Earth's rotation. But does the gyroscope stay stable if we rotate the entire galaxy? What if we rotate the entire universe: will we, from inside the universe, observe the gyro rotating in opposite direction? The more I think about it, the more gyroscopes seem to violate the laws of relativity of frames of reference. Help!

submitted by /u/thetimujin
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Would the hallmarks of metallic bonding (eg. electron delocalisation) still be present if, rather than a very large number metal atoms, there were only 2 or 3?

Posted: 11 Dec 2016 03:34 AM PST

Basically, I have been teaching somebody some basics in structure and bonding at a UK GCSE level. I have explained that each metal atom has 8 nearest neighbours and, due to to close proximity of metal atoms in a piece of metal, the orbitals of the atoms are forced to overlap and form many molecular orbitals, within which the electrons are free to move around. So follows conductivity etc etc.

My student asked if the case would be the same if there were only 2 metal atoms?

I feel like the answer should be yes, as the species would still be a metal, and must therefore exhibit metallic bonding, but wasn't convinced that only 2 atoms would comply with the 8 nearest neighbour, vast orbital overlap conditions.

Many thanks,

submitted by /u/gebuckle
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If a star explodes because it ran out of fusion fuel how can it be that a new star can form out of the gas that the supernova leaves behind?

Posted: 10 Dec 2016 08:38 AM PST

Why are some materials opaque when viewed by themselves, but become more transparent when pressed against another material?

Posted: 10 Dec 2016 03:34 PM PST

I noticed this interesting bit of science at the post office today. Taking a piece of wax paper they had, I noticed that it was fairly opaque when held up in the air, but when i pressed it against something, such as the table, or my hand, it became almost entirely transparent. Why is this?

submitted by /u/untitled11235
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What does cpu0 do during sleep mode?

Posted: 10 Dec 2016 03:44 PM PST

Watching the dmesg output of my computer when I out it to sleep I see the kernel sleep cpu1-cpu3, as well as other devices. What happens to cpu0?

submitted by /u/FatGecko5
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Why are pneumonia shots only recommended for old people?

Posted: 10 Dec 2016 06:20 AM PST

I'm in my early 40s and I've had pneumonia a few times since the first time in high school. Pneumonia sucks, so I wanted to get a pneumonia shot, but it was very difficult to get because I'm not 65+.

Why is that? Is it just in perennially short supply, so they reserve it for the most needy? Is it less effective in younger people? Other?

(I eventually got one, so this isn't a request for medical advice)

submitted by /u/ShoelessHodor
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What would a universe with 2 temporal dimensions be like?

Posted: 10 Dec 2016 07:26 AM PST

If light is a wave/particle duality, how can its' speed be a constant under all circumstances?

Posted: 10 Dec 2016 11:43 AM PST

Waves certainly depend on the density of the space they travel through to determine the speed (i.e. waves travel faster through solids than gasses).

Also, given its particle attributes, I assume it would most likely have similar properties to a neutrino, passing through matter unimpeded. Though, its speed must somehow be affected by its wave duality, right?

A secondary question; If it were discovered that the speed of light is not a constant, and thus contradicted the Laws of Special Relativity, what would be the impact on our current understanding of the laws of physics? Would that part of Special Relativity just be simply re-written? Or would the entire framework have to be recalculated?

submitted by /u/SuperFishy
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