closed strings
A string is a hypothetical vibrating one-dimensional sub-atomic structure and one of the main objects of study in string theory, a branch of theoretical physics. There are different string theories, many of which are unified by M-theory. A string is an object with a one-dimensional spatial extent, unlike an elementary particle which is zero-dimensional, or point-like. Quarks and electrons are thought to be made of strings.
Strings can be either open or closed. A closed string is a string that has no end-points, and therefore is topologically equivalent to a circle. An open string, on the other hand, has two end-points and is topologically equivalent to a line interval. Not all string theories contain open strings, but every theory must contain closed strings, as interactions between open strings can always result in closed strings.
Open and closed strings are generally associated with characteristic vibrational modes. One of the vibration modes of a closed string can be identified as the graviton. In certain string theories the lowest-energy vibration of an open string is a tachyon and can undergo tachyon condensation. Other vibrational modes of open strings exhibit the properties of photons and gluons.
- Wikipedia
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...arpi... added this photo to her favorites. (5 months ago)
...arpi... (5 months ago | reply)
fantastic abstract and topic
barneymcgrew (5 months ago | reply)
fantastic, a treat for the eyes
This photo was invited and added to the bitches brew group.
Enrique Colombo added this photo to his favorites. (5 months ago)
Enrique Colombo (5 months ago | reply)
This is wonderful picture, still looking for several minutes and it has a hypnotic character!!!!! Excellent!
GAPHIKER added this photo to his favorites. (5 months ago)
GAPHIKER (5 months ago | reply)
Wonderful capture of the topic! Very cool shot!
ctodemann added this photo to his favorites. (5 months ago)
ctodemann (5 months ago | reply)
smrisk added this photo to her favorites. (5 months ago)