If the sea level rises, does the altitude of everything decreases ? | AskScience Blog

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If the sea level rises, does the altitude of everything decreases ?

If the sea level rises, does the altitude of everything decreases ?


If the sea level rises, does the altitude of everything decreases ?

Posted: 30 Sep 2017 07:09 AM PDT

Is there any evidence of mammals (besides humans) being serial killers or murdering their own species for fun?

Posted: 30 Sep 2017 07:46 PM PDT

Microstates in statistical mechanics and Pauli's exclusion principle - how do you count "the number of possible positions"?

Posted: 01 Oct 2017 07:07 AM PDT

Space is continuous, right?

Microstates

How can you ever arrive at a finite number of "microscopic arrangements of particles" when counting W in Boltzmann's entropy equation?
S = k_B log W
It seems to me that there are infinite ways to arrange 1000 particles in a box while keeping the same volume, pressure, etc.

(I understand that introducing quantum mechanics changes this question a bit, but I'm also interested in the classical answer, since Boltzmann and his contemporaries only knew classical physics...)

Pauli Exclusion Principle

The same question goes to filling up phase space with electrons according to Pauli's exclusion principle. You can't have two electrons in the same quantum state, so if you stick to one position you have to stack them in a tower of increasing momentum. But what does "one position" even mean? If you move 10-700m to the left, does that count as a new position where you can start a new tower of momenta? Surely not.

How much space does one "quantum state slot" take up?
If they take up space, does this mean electrons are fat?

submitted by /u/Schpwuette
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Are there thermal neutrinos?

Posted: 30 Sep 2017 09:36 PM PDT

So thermal neutrons are neutrons that come to thermal equilibrium with their surroundings. Do neutrinos do the same thing? Once created in stars and supernovae, would neutrinos "cool" down overtime? Plots like this indicate that "cooler" lower energy neutrinos should have smaller nuclear cross section. I usually imagine neutrinos as high energy particles zipping around. Could instead very low energy neutrinos be floating around not interacting with anything?

submitted by /u/siliconlife
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When you shine light at a mirror, does the amount of light in the room change?

Posted: 30 Sep 2017 09:20 PM PDT

This seems like a dumb question. But what if you looked at the light and it's reflection in the same visual frame? Then would the amount of light be double?

submitted by /u/lbon6201
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How much energy would you need to create different types of mass, such as sub atomic particles, or even whole atoms?

Posted: 01 Oct 2017 05:35 AM PDT

Is there any research on the percentage of depressive outpatients that complain of loss of cognitive function(and of which type) even after their illness remission?

Posted: 30 Sep 2017 04:52 PM PDT

I am asking specifically for outpatients since it seems there is a difference of cognitive loss between 'inpatient' and 'outpatient' depression and even different loss of grey matter in several parts of the brain.

submitted by /u/Periplokos
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If we can use vaccines to "train" the immune system to fight diseases, is it possible to make an "anti-vaccine" that would condition it to NOT fight allergens?

Posted: 30 Sep 2017 10:51 PM PDT

I'm not really aware of precisely how vaccines work so forgive me if I have any misconceptions about them.

submitted by /u/rightfootmessi
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Can there be heat without matter?

Posted: 30 Sep 2017 06:33 PM PDT

How does the coordinate system account for tectonic shifts?

Posted: 01 Oct 2017 02:34 AM PDT

What is the bandwidth of the underwater cables that supply internet to the whole world? And what about the cable makes it so good at transmitting all that data?

Posted: 30 Sep 2017 11:40 PM PDT

There's a bunch of cables but there are soooo many more computers than cables that are connected. They must transmit a really large amount of data all the time so how do the cables meet the demand?

submitted by /u/infectedhotsauce
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If an alien civilization within the Milky Way Galaxy were analyzing our Sun with exactly the same technology we have available to us on Earth today, would they be able to detect our planet and detect that life existed on it?

Posted: 30 Sep 2017 06:46 AM PDT

How does the brain map give sensation to a phantom limb?

Posted: 30 Sep 2017 02:55 PM PDT

From what I've read there is a brain map that associates sensation of touch of each body part to a region of the brain. The hand and feet map to different brain regions for example. But do we have any idea of how each of those regions give rise to a conscious feeling of being touched in the hand or feet respectively. When we are touched in the hand or foot a brain imaging would show different regions of the brain activating. But what is giving rise to the conscious awareness of "where" on the body is being touched?

I mean like it seems that like if someone was born with an extra finger that they would have a sensation of knowing when that finger is touched. Yet everyone else without a sixth finger would never have that sensation of a sixth finger touched no matter what implanted electrodes were stimulating our brain. What is different in their brain that gives rise to conscious spatial awareness of a sixth finger being touched?

I don't know how to articulate this question precisely. I hope someone understands what I'm getting at.

submitted by /u/whyislemonbad
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Why did the STS do roll reversals instead of descending from a higher longitude?

Posted: 30 Sep 2017 03:44 PM PDT

After watching a video on how to land the space shuttle I'm curious as to why did the STS do roll-reversals instead of beginning descent from a higher longitude (I'm not sure this is the correct term so I did a picture): link
Would the azimuth error be too high and require roll reversals anyway?

submitted by /u/RBozydar
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What is the difference between these equations involving Strangeness Conservation that makes one permissible and one not?

Posted: 30 Sep 2017 08:51 AM PDT

Why is Λ0 -> p + π- permissible, but K- + p -> n + π0 not?

uds -> uud + du and su + uud -> udd + uu

Both involve a change of quark flavour - the s quark of the Λ0 and K- both becoming down quarks - implying the Weak Interaction and hence Strangeness not necessarily being conserved. So what is different between the two interactions that means the second is a no-no?

The two interactions have been pulled from different sources. The first is from Hyperphysics and the second is from a CGP textbook which claims it is not allowed. Admittedly the textbook does not even approach the idea that Strangeness is not always conserved...

EDIT: got the sources mixed up.

submitted by /u/ikilledvestein
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Why is it harder to breathe when sticking your head out of a fast moving vehicle?

Posted: 30 Sep 2017 06:23 PM PDT

Why a particle and its antiparticle annihilate each other when they touch but not all types of matter with opposite charges?

Posted: 30 Sep 2017 11:49 AM PDT

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