physics synoptic paperWatch
learn PV=nRT or NkT etc bound to come up with balloon section;
learn diffraction & resolution: n lambda = b sin theta, (is that how you spell lambda?);
learn refraction: n1 sin theta1 = n2 sin theta2;
learn red shift with universe expantion (size now/size then = 1+z);
learn E~kT and E=hf for that graph of wavelength v temp.