Monolayer Graphene absorbs about 2.8% of visible light therefore it is more or less transparent. It's excellent electrical properties allow it to be used in high speed electronics so can therefore make great transistors etc. It can also be used to make LED's which from what I understand could be...
Hi all,
I'm currently doing some reading into surface forces and am confused about the following:
-Are the van der Waals forces (Debye,Keesom and London) always attractive? I thought they were until I read that the London force is not always.
-When approaching a surface for example say with...
Yep you've got it. The angular velocity is the amount of angle that is traveled through per second so by finding how many times that amount of angle goes into 2\pi radians you find the time taken (which is what you did).
Hi all,
I've been having a problem with understanding some of the van der Waals forces. I understand that the polarizability of a induced-fixed dipole interation is:
\begin{equation}\alpha =4\pi\epsilon r^{3} \end{equation}
Which leads to the potential field (assuming two different...
Ok thankyou both for the advice I have decided to do the masters as it is in a similar topic so I will be able to decide at the end of that whether I want to commit to a PhD in it.
Thanks Again
I'm currently in my third year of a 4 year masters course, however I've been offered a place on a PhD scheme which would mean me graduating with a Bsc instead of a masters and starting the PhD right away. My question is: Does having a masters as well as a PhD differ significantly from having a...
This is part of a past paper I am trying to work through before a physics of fluids exam in a month.The angular frequency ω of a periodic surface wave with wavenumber k on
deep water is
ω = sqrt(gk)
where g is the gravitational acceleration.
Obtain an expression for the wave’s phase velocity in...