2 years, 9 months ago
What are the known higher vibrating strings according to super string theory?
Why is there a difference between lower vibrating strings and higher vibrating strings?
What causes dark matter to create anti-gravity?
What causes dark matter to create anti-gravity?
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M$1 Answer
No strings have been observed directly (my personal opinion is that cosmic strings are more hypothesis than theory at this point). Strings are thought to manifest themselves in classical space as fundamental particles (bosons and fermions), and the vibration frequency of a string determines the type of particle (a lower vibration frequency means less energy in the string and therefore a lower mass for the particle).
Dark matter does not create negative gravity; in fact, the most obvious signs of its presence are its gravitational effects (non-Newtonian orbital velocities of stars in galaxies, gravitational lenses, etc.). The force responsible for the accelerating expansion of the universe (negative gravity) is dark energy.
Dark matter does not create negative gravity; in fact, the most obvious signs of its presence are its gravitational effects (non-Newtonian orbital velocities of stars in galaxies, gravitational lenses, etc.). The force responsible for the accelerating expansion of the universe (negative gravity) is dark energy.
source(s):
http://www.pbs.org/wgbh/nova/elegant/resonance.html
http://www.superstringtheory.com/basics/basic4.html
http://en.wikipedia.org/wiki/List_of_particles
http://www.astro.cornell.edu/academics/courses/astro201/dm_evidence.htm
http://www.sciencephotogallery.com/pictures_1041243/dark-matter-gravitation...
http://imagine.gsfc.nasa.gov/docs/science/mysteries_l1/dark_energy.html
http://www.pbs.org/wgbh/nova/elegant/resonance.html
http://www.superstringtheory.com/basics/basic4.html
http://en.wikipedia.org/wiki/List_of_particles
http://www.astro.cornell.edu/academics/courses/astro201/dm_evidence.htm
http://www.sciencephotogallery.com/pictures_1041243/dark-matter-gravitation...
http://imagine.gsfc.nasa.gov/docs/science/mysteries_l1/dark_energy.html
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
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