Recent content by Narges

I've been interested for a while in the nature of space-time. It's been a long time since anybody talked seriously about the "ether". The concept seems to have been thrown away into the darkest corners of physics after the famous Michelson-Morely expermient. However it seems to me like space...

I have a confusing question mainly due to my lack of understanding of Quantum Mechanics and spin! here it goes anyway... In an atomic orbital, like the 1s orbital, two electron waves with opposite spins occupy the same area of space. Now, does this mean that their waves should interfere with...

Depletion Hey there This is for third year university astrophysics. I found out what the aswer is from my lecturer. But nothing about dust came up in the exam :( Nevermind thanks for your reply

Hey there Could anybody answer the following question on dust grains and depletion of Silicon and Carbon on dust: If D(Si)=-3, D(C)=-0.5, and the logarithmic cosmic abundances of Silicon and carbon relative to H as 12 are 7.5 and 8.5 respectively, what is the ratio of the number of atoms of...