Questions tagged [matter]
Use this tag for questions related to mass and any materials that have volume and the objects they constitute.
388
questions
0
votes
1
answer
231
views
If a graviton is in the atom then why does matter with more atoms still fall at the same rate? [closed]
If a graviton is in the atom then why does matter with more atoms still fall at the same rate?
Could it be possible that all atoms are expanding and thus creating an illusion of attraction?
Earth ...
- 565
1
vote
1
answer
332
views
What is the identity of Dark Matter?
What is the identity of dark matter?
Is it a particle?
Is it the lightest superpartner (LSP)?
Do the phenomena attributed to dark matter point not to some form of matter but actually to an ...
- 659
4
votes
1
answer
165
views
Darkest matter on Earth ("pure black")
What is (for a human's eyes) the natural or synthetical matter on Earth (i.e. not in Space) that emits the least quantity of visible photons while being lightened by sunlight?
In this matter, how is ...
- 85
0
votes
3
answers
212
views
Can time be calculated without actually involving any matter?
Humans typically measure time by the change in material things. The movement of hands on a clock. The oscillations of a cesium atom.
But can time also be measured by just changes in energy, and in ...
- 11.7k
0
votes
1
answer
933
views
What is matter made of in the light of Quantum Mechanics? [closed]
I've always wondered what matter (particles, force particles, etc.) was actually made of considering the fact that quantum mechanics has shown us that particles can actually act as a probabilistic ...
- 109
6
votes
1
answer
514
views
Can an analog to the Meissner Effect be proposed for matter and gravitational fields?
In the study of electromagnetic fields and quantum electrodynamics we observe and theorize on the behavior of superconductivity and the Meissner effect. Has an analog of these behaviors been proposed ...
- 11.7k
2
votes
1
answer
141
views
Is there, and if there is, what is the name of the concept that matter is made out of void/space?
I can't recall where I heard about this, but it was rather intriguing. I recall the notion that matter is compressed void/space, where I remember an example of a bedsheet representing space, and the ...
- 165
0
votes
1
answer
1k
views
Is it possible that our universe is oscillating between matter and antimatter at a high frequency? How would we know? [closed]
Suppose the big bang did create equal portions of matter and antimatter and they exist right over top of each other, such that there is a constant inversion going on. Since a matter and antimatter ...
- 141
1
vote
4
answers
172
views
Is there any evidence that matter and antimatter continuously appear and disappear on the edge of a black hole?
I heard Stephen Hawking got a Nobel prize for this, someone said there was no evidence for it which I find quite strange since he got an award for it.
- 1,660
6
votes
3
answers
2k
views
Are stars getting more metal-rich, less massive and shorter-lived with cosmic time?
A star produces energy through nuclear fusion with the 2H and 3H isotopes to create 4He for example. I read that there is a mass loss of 0.018884 (in atomic mass units).
Of course this mass loss is ...
- 383
1
vote
8
answers
3k
views
Can I throw a stone through my window without breaking the glass?
As far as I know, most of an atom is vacuum.
Therefore, in theory, would it be possible for me to throw a tiny stone through my window without breaking it because no matter actually collides?
- 135
3
votes
1
answer
567
views
What is the difference between matter & spacetime? [duplicate]
If the universe is expanding why doesn't the matter in it expand proportionally making it seem as if the universe is static? Alternatively, as spacetime expands why does it not just slide past matter ...
205
votes
4
answers
85k
views
Why doesn't matter pass through other matter if atoms are 99.999% empty space?
The ghostly passage of one body through another is obviously out of the question if the continuum assumption were valid, but we know that at the micro, nano, pico levels (and beyond) this is not even ...
- 3,936
1
vote
2
answers
613
views
Can matter be created from energy? [duplicate]
The small, hot, dense early universe the size of an atom was made up entirely of energy, it wasn't until after the expansion began and the universe cooled down some of that energy began converting ...
- 283
1
vote
1
answer
165
views
Analogues of mass, space, or time? [closed]
I began wondering about this when working through this question: is there anything analogous to spacetime or matter? Both spacetime (note: most of what I know of about the concept of spacetime comes ...
- 235