Recent content by Marwa

No,polyvinyl alcohol. I know pva films dissolves in water, but i want to make a film with it that doesn't dissolve in water by using uv is that possible without adding any agent or not ?!

If we need to make a crosslinking for PVA using physical means, can we do this using uv without adding any agent or do we need to add something like a sensitizer ?!

I got it: B=μo(H+M) and M=XmH B=μo(H+XmH) B=μoH(1+Xm) so μH=μoH(1+Xm) μ/μo=μr Xm=1-μr Thank you.

I have tried : M=Xm.H Xm=M/H Xm=Mμ/B as H=B/μ and B=μo(H+M) Xm=(M.μ)/μo(H+M) so Xm=μr.M/(H+M)

Relevant equations: β=μH βo=μoH μr=μ/μo β = μoH+ μoM M=Xm.H

Homework Statement find the derivation of χm=μr-1 where Xm is the magnetic susceptibility and μ is the relative permeability. Homework Equations M=Xm.H M is the magnetization,H is the magnetic field μr=μ/μo where μo is the permeability of a vacuum, The Attempt at a Solution I...