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2
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3answers
269 views
What does this “Witten's Dog” Feynman diagram in Futurama episode mean? [closed]
In an old episode ("Mars University") of Futurama which is a TV show, a character named Professor Farnsworth was trying to lecture "Superdupersymmetric String Theory" and "Witten's Dog" to some ...
2
votes
1answer
91 views
What exactly does this news story mean by “magnetic charge”?
I recently saw this article in my Google News page, whose headline and first paragraph are:
Antimatter's Magnetic Charge Revealed
Scientists say they've made the most precise measurements to ...
1
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6answers
246 views
What can $E=mc^2$ do?
In the famous equation $E=mc^2$, the variables stand for:
$E$ is energy, $m$ is mass, and $c$ is the speed of light (in vacuum).
And I understand the equation fairly but limited in knowing in ...
3
votes
1answer
145 views
What is the basic idea behind how quantum computation is supposed to work?
As far as I know that QM is probability-based and Feynman proposed a quantum computer (QC) as an emulator for fast computation. Reading the introductory articles, I just do not get the essence of the ...
2
votes
2answers
184 views
What would happen to a person that was inside the Large Hadron Collider when it is turned on? [duplicate]
Possible Duplicate:
What would happen if you put your hand in front of the 7 TeV beam at LHC?
Not a terribly scientific question, but one that I'm sure many people have thought about :)
2
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1answer
822 views
Anti-matter black hole and time
I have recently read some hard science-fiction story based on an assumption that if time stops (from external observer's perspective) on the event horizon of black hole, then in an anti-matter black ...
0
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0answers
42 views
Terminology Fractional Physics [closed]
I recently read an article about the use of physics in computer graphics. Moreover, the method of "fractional Physics" used to provide the awesome three dimensional effects we've come to enjoy. My ...
-3
votes
1answer
167 views
If the universe is infinite, shouldn't I already have been contacted by a time and space travelling doppelgänger?
If the universe is infinite, by virtue of chance it means that every possible configuration of matter must exist somewhere (according to this documentary).
Therefore, if we accept that the universe ...
3
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4answers
211 views
List of Physical Toys [closed]
There should be a list of toys considered "physical", which demonstrate or make you think over certain physical principles/phenomena. And of course which could just amaze.
Related question at MSE is ...
25
votes
4answers
9k views
What are the precise statements by Shouryya Ray of particle dynamics problems posed by Newton which this news article claims have been solved?
This recent news article (here is the original, in German) says that
Shouryya Ray, who moved to Germany from India with his family at the age of 12, has baffled scientists and mathematicians by ...
1
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3answers
256 views
How would you explain spectrum and spectral analysis to grandma?
E.g. what the light or sound spectrum is, what it's useful for - in very simple terms that a grandmother or a child would understand.
2
votes
2answers
528 views
Please recommend a good book about physics for young child (elementary school aged)
I'm looking for a book that would be appropriate for an advanced elementary school aged kids (say, 6-11 YO) describing the basics of physics (or sciences in general) in entertaining way.
The ...
3
votes
1answer
138 views
Do mass and the Pauli exclusion principle conspire to make light fermions take up more space?
The wavelength of light fermions is longer. Wouldn't this cause them to take up 'more space' so that they didn't overlap according to the Pauli exclusion principle? Am I totally misunderstanding ...
3
votes
2answers
792 views
If I move a long solid stick can I send message fastest than light? [duplicate]
Possible Duplicate:
Is it possible for information to be transmitted faster than light?
I mean by using a perfect solid stick long enough and moving it forward and backward can I send ...
2
votes
1answer
401 views
In layman's terms, what is a quantum fluctuation?
What causes it and how does it occur? If you do post some mathematics, please explain what each term means too please.
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10answers
3k views
Does 'electricity' have mass? Is 'electricity' tangible?
Background: I'm in a legal academic discussion about the status of electronic 'goods' and whether they qualify as 'goods' in the same way a chair and a pen do. In this context (and specifically at the ...
