>filmed at up to 40 billion frames per second that's quite a feat on anyone's watch
how many frames per seconds are our eyes recording at?
Physicists have filmed the oscillation of a time crystal
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Re: Physicists have filmed the oscillation of a time crystal
#62[deleted]
Re: Physicists have filmed the oscillation of a time crystal
#63why aren't electrons spinning round an atom called "time particles"? Technically by the time they run out of energy, the universe will have died so they are "super time particles".
Re: Physicists have filmed the oscillation of a time crystal
#64> So, where the structure of regular crystals repeats in space, in time crystals it repeats in space and time.
Does that mean anything that behaves like a wave is a form of time crystal? For example ocean currents moving in unison causes all atoms in that wave to follow a very specific pattern similar to what is described in the article.
Re: Physicists have filmed the oscillation of a time crystal
#65Since the article doesn't do a good job of explaining what a time crystal is , here's my attempt at summarizing the Wikipedia article [0]. Normally, a system which is driven by an external frequency oscillates at the same, or a multiple of the driving frequency. This is because the external conditions are symmetric under a time translation (i.e. a delay) by the period duration. This symmetry is normally preserved by…
Every time the discussion of time crystal comes up, a simple analogy can explain what it is.
Regular crystal has repeatable structure in space, i.e. its lattice is the same shape over and over again across in space.
Time crystal is the kind of material that has repeatable structure across time, at the lowest energy state. It just means it changes its shape periodically over time.
An example of that is quartz crystal vibration where its structure bends and unbends over time. Quartz bending and unbending (vibration) is due to the piezoelectric effect when an external electric force is applied. The external force requirement disqualifies it as a time crystal.
The "at the lowest energy state" requirement means time crystal can "vibrate" by itself without external force applied. "Vibrate" is used loosely here. It could be the nuclear-spin flipped periodically, or some other structural changes that need no outside influence.
Re: Physicists have filmed the oscillation of a time crystal
#66I wish someone would show that charge parity time (CPT) symmetry can be broken so we'd have to rewrite the entire laws of physics from scratch but this time would do it more efficiently.
Re: Physicists have filmed the oscillation of a time crystal
#67Since the article doesn't do a good job of explaining what a time crystal is , here's my attempt at summarizing the Wikipedia article [0]. Normally, a system which is driven by an external frequency oscillates at the same, or a multiple of the driving frequency. This is because the external conditions are symmetric under a time translation (i.e. a delay) by the period duration. This symmetry is normally preserved by…
Every time the discussion of time crystal comes up, a simple analogy can explain what it is. Regular crystal has repeatable structure in space, i.e. its lattice is the same shape over and over again across in space. Time crystal is the kind of material that has repeatable structure across time, at the lowest energy state. It just means it changes its shape periodically over time. An example of that is quartz crystal…
Would it be accurate to say that the "Vibration" or nuclear-spin flipping doesn't emit energy or is neutral in the thermodynamic sense?
Re: Physicists have filmed the oscillation of a time crystal
#68Far out! Here is the 13 second video from the Max Planck Society in all its glory: https://youtu.be/kUY3TglEUCU
Is there any particular reason it's unlisted?
Re: Physicists have filmed the oscillation of a time crystal
#69This is a wonderful development! Learning about far-out advances in physics is amazing, but they sometimes feel like they are too removed from everyday reality beyond helping us understand some semantic piece of how the Universe works. Does anybody know if time crystals have any practical uses?
from the article at the end. suggest u read it hashman.
"Classical crystals have a very broad field of applications," said physicist Joachim Gräfe of the Max Planck Institute for Intelligent Systems.
"Now, if crystals can interact not only in space but also in time, we add another dimension of possible applications. The potential for communication, radar or imaging technology is huge."
Re: Physicists have filmed the oscillation of a time crystal
#70Since the article doesn't do a good job of explaining what a time crystal is , here's my attempt at summarizing the Wikipedia article [0]. Normally, a system which is driven by an external frequency oscillates at the same, or a multiple of the driving frequency. This is because the external conditions are symmetric under a time translation (i.e. a delay) by the period duration. This symmetry is normally preserved by…
When I hear "time crystal", I think "the wielder of this object can travel through time, or at least do something far out, like see past events", not "a crystal that when vibrated breaks symmetry".
I believe the most recent iteration of star trek is particularly guilty of stealing "time crystals" from the science news headlines and applying it to this sci-fi trope.