Kemune

8. Septembris 2006

8. Septembris 2006

Add to Memories Tell A Friend
vakar neilgi pirms vieniem Ķīnas radio iemācījos jautājumu "vai jums te ir tarakāni?". aptuveni tā - yo čin lin ma. pēc tam sāka skanēt kāda pasaka vai stāsts izteiksmīgā diktora lasījumā

Add to Memories Tell A Friend
vo, šitais bija noderīgi:

"Dark matter": an invisible attractive force operating on galaxy-level distances (at million light years). Size: about 23% of the energy-mass of the observed universe. Evidence: Galaxies spinning faster than the number of visible stars justify. Gravitational lenses stronger than visible stars justify. Suspects: known low mass particles like neutrinos; unknown low or high mass particles like strings, wimps; a new phsyical force; non-r-squared term in Newton's equation of gravitation, observational error ...

"Dark energy": an invisible repulsive force operating on universe-size distances (at billion light years). Size: about 73% of the energy-mass of the observed universe. Evidence: Hubble expansion is accelerating over time when gravity would suggest eventual deceleration or collapse. Suspects: energy in fabric of space-time, unknown force, observational error ...

"Observed matter": stars, galaxies, gas clouds, neutrinos; Size: about 4% of the energy-mass of the universe.

(c) Slashdot
Powered by Sviesta Ciba