Is it possible to create a normal-sized ice cube of Ice VI or Ice VII in the laboratory? And will it come out of the press as an ice cube that will take awhile to melt into regular ice or water? | AskScience Blog

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Friday, October 6, 2017

Is it possible to create a normal-sized ice cube of Ice VI or Ice VII in the laboratory? And will it come out of the press as an ice cube that will take awhile to melt into regular ice or water?

Is it possible to create a normal-sized ice cube of Ice VI or Ice VII in the laboratory? And will it come out of the press as an ice cube that will take awhile to melt into regular ice or water?


Is it possible to create a normal-sized ice cube of Ice VI or Ice VII in the laboratory? And will it come out of the press as an ice cube that will take awhile to melt into regular ice or water?

Posted: 06 Oct 2017 01:37 AM PDT

What kind of press would you need to make an ice cube like this? The Hydraulic Press channel can't make small crystals of Ice VI with their equipment, can they?

I can't find much about this since the Roman numerals throw Google off and I just get results for regular ice.

submitted by /u/_Mr-Skeltal_
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When and what made humans realize that light speed isn't instant?

Posted: 05 Oct 2017 05:37 PM PDT

Do Cells That Make Up The Brain Get Replaced?

Posted: 05 Oct 2017 07:48 AM PDT

Skin cells die and get replaced with new ones continuously. Does a similar process happen for cells that make up the human brain?

submitted by /u/nicebyte
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Is it possible that there is a net charge in the universe?

Posted: 06 Oct 2017 01:50 AM PDT

I was thinking that since we have more matter than anti matter, maybe there is also a possibility that there is either more positive or negative charge than the other.

How easily would this be detectable?

submitted by /u/empire314
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Around Chernobyl its relatively safe in the open air for short periods, but very dangerous if you kick up dirt, pick vegetation, touch anything. How is this radiation stored?

Posted: 05 Oct 2017 04:56 PM PDT

I doubt a bunch of photons are bouncing around inside a leaf just waiting to be set free.

submitted by /u/Xaphoon
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When I unplug my charger from the wall socket why does the red light stay lit for a few seconds then fades? Would the loss of power not make it instantly dim?

Posted: 06 Oct 2017 06:54 AM PDT

In the search of exoplanets, why exactly are we searching for planets similar to earth in search for extra-terrestrial life?

Posted: 06 Oct 2017 06:04 AM PDT

To be more specific, why is there an emphasis on searching for a earth-sized exoplanet orbiting a star with similar mass/size/thermal output(?) to our Sun? Wouldn't searching for other things that could signify the possibility of life such as water, oxygen, or carbon be more effective? Searching for something similar to earth a bajillion light years away seems an odd condition to take into account.

submitted by /u/IamWongg
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How are radioactive materials formed?

Posted: 06 Oct 2017 06:00 AM PDT

Where do they come from, and what conditions need to be met?

submitted by /u/MaximusElectissimus
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[Physics] If 2 electrons collide, they may release a photon. Where does that energy come from?

Posted: 05 Oct 2017 04:00 PM PDT

Full disclosure: I know nothing, Jon Snow. If this question is nonsensical or too ambiguous, please let me know.

I am currently reading "Hidden in Plain Sight". In one of its chapters, the author mentions that when 2 electrons collide, there is a chance that a photon is radiated.

Now, as I understand it, energy cannot be created or destroyed. Photons most certainly contain energy -- so in this case, where does the energy (expressed "in" the photon) come from?

My train of thought is as follows:

  • Did the electrons lose mass...?

  • Did the electrons lose some "kinetic energy"? (Aren't they always moving at lightspeed though?)

  • Did the electrons lose temperature? (Do electrons even have temperature?)

What am I missing?

Thanks in advance.

submitted by /u/Gooseheaded
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Why is Cherenkov radiation constant but a sonic boom is not?

Posted: 06 Oct 2017 01:31 AM PDT

I read that they work the same way, but why does a sonic boom only produce one loud boom when Cherenkov radiation create a constant blue glow? Is it just because in Cherenkov radiation the 'boom' just happens over and over again?

submitted by /u/obafgkmbutt
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Why is our galaxy relatively flat rather than a big cloud of stuff?

Posted: 05 Oct 2017 02:11 PM PDT

Is there a biological/observable difference in the brain of a person with a 'photographic' memory? If so, how is it different from 'normal' brains?

Posted: 05 Oct 2017 08:02 AM PDT

Is gravity based on the size of an object? Or the mass/density of the object?

Posted: 05 Oct 2017 07:07 PM PDT

https://youtu.be/zHdJwBrT3WA?t=365

In the video above, its explained that object, when condensed (in this case, a star, example is a potato chip bag), creates a stronger gravitational pull when it is condensed. Is this true? I was always under the impression that its the size of the object that creates the gravity, not the mass/density of the object. Can someone help me understand?

submitted by /u/FUCKJ0HN
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On a phase diagram, is there vapor pressure at pressures and temperatures not on the coexistence curve?

Posted: 05 Oct 2017 06:25 PM PDT

On a phase diagram, I've learned that the coexistence curve at a phase boundary is where the chemical potential of the two phases are equal. This leads to the Clausius-Clayperon equation, which can be used to estimate vapor pressure at various temperatures.

But say I was on the coexistence curve between liquid and vapor, and I increased the pressure (or decreased the temperature). I should now be solidly in the liquid region of the phase diagram, where the chemical potential of the liquid phase is lowest. Does that mean liquid is the only phase present? I've been told that vapor pressure exists for any liquid under any conditions.

If there is vapor pressure despite the higher pressure, then aren't the two phases coexisting? Then why is the phase boundary called the "coexistence curve"?

Thanks!

submitted by /u/not_zod_grodd
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What happens to water when it becomes extremely compressed?

Posted: 05 Oct 2017 11:55 AM PDT

Google was no help since I couldn't find a video on it.

Im thinking of a hydraulic press pressing into a large, metal cup of water, where water can't escape from, what will happen to it?

[Apologies if this is the wrong tag, I made a guess between physics and Earth sciences]

submitted by /u/-Sag
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Is crystallography a dead field?

Posted: 05 Oct 2017 11:17 AM PDT

With the rise of cryo-electron microscopy, is crystallography becoming redundant as a technique?

submitted by /u/junkProduct
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How do computer screens show color?

Posted: 05 Oct 2017 06:02 PM PDT

So from my understanding, computer screens actually use green, red and blue to display the color they do by activating our cones. I thought they flashed really fast so it kinda tricked our eyes. However my AP psychology teacher said it actually shows a color because of how condensed the pixels are so you can't actually see the individual colors.. So which one is actually correct? And if my teacher was correct wouldn't that mean you can't actually display a color on a single pixel? Sorry if this sounds stupid

submitted by /u/jacobdu215
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Is molten metal still electrically conductive?

Posted: 05 Oct 2017 09:40 AM PDT

Is molten metal still electrically conductive?

submitted by /u/BariumSodiumNa
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If you shine a white light through a blue filter, does it actually change the wavelength of the color?

Posted: 05 Oct 2017 11:37 AM PDT

As in, could you use plain old colored plastic filters to shift the color of a white or daylight LED light to wavelengths more friendly to plant growth?

submitted by /u/OtisB
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[Engineering/Physics] How do thermonuclear warheads get decommissioned, without anything blowing up?

Posted: 05 Oct 2017 11:33 AM PDT

If it were opened by cutting action, wouldn't that trigger the conventional explosives inside (and the nuclear explosion too)?

submitted by /u/RatherCynical
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How do fission and fusion both release energy?

Posted: 05 Oct 2017 09:23 AM PDT

Surely they're inverse operations? One should release and one should absorb?

submitted by /u/Joey936
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