Dimension Science

DARK MATTER I ntroduction:       D utch astronomer Jacobus Kapteyn first suggested the existence of dark matter in 1922 while studying stellar velocities  .                              S wiss astrophysicist Fritz Zwicky  inferred the existence of dark matter  during his work on galactic clusters in 1933.             He is also best in other works like Neutron stars ,Gravitational lensing  ,Supernovae...                                                                                            T he late American astronomer Vera Rubin teamed up with the instrument  maker Kent Ford in the 1960s ...

SUPER FLUID S uper fluid was originally discovered in liquid helium,by PYOTR KAPITSA & JOHN F.ALLEN. The theory of superfluidity was developed by Lev Landau. Super-fluidity occurs in two isotopes of Helium [Helium-3 & Helium-4] when they are liquified   by cooling to cryogenic temperatures i.e, T=-269℃ or 4.15K . When cooled further 2.17K or -271 ℃ called its Lambda point,a remarkable thing occurs ,the liquid density drops, and the liquid becomes a zero viscosity"SUPER-FLUID" The characteristics of superfluid S uperfluid has some weird characters that doesn't happen in real time, I mean in our day to day life . T his weird character of a liquid can't  be explained by our normal physics and classical laws. It can be explained clearly by a renowned model/law called QUANTUM MECHANICS . J ohn S aunders explains how a fluid can flow without friction...He explains the reason behind the weird behavior of super fluid . A nd one more thing is ...