Re: Fresnel's Reflectivity
- To: mathgroup at smc.vnet.net
- Subject: [mg27411] Re: Fresnel's Reflectivity
- From: vze295bp at verizon.net (David Reiss)
- Date: Sun, 25 Feb 2001 00:53:33 -0500 (EST)
- Organization: Scientific Arts
- References: <96nvb4$jcl@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
In article <96nvb4$jcl at smc.vnet.net>, Diptabhas Sarkar <ds579 at columbia.edu> wrote: > Hi, > I am new to Mathematica. I need to fit the Fresnel's reflectivity > theory to an experimentally generated data set. I tried nonlinear fitting. > The problem is one of the parameters (dielectric constant of metal) is > imaginary. This prevents mathematica from calculating the derivatives. > > Any help in this regard will be very helpful > > Thanks > Sarkar Of course you could expand the reflectivity expression into its real and imaginary parts and fit each of these separtaely to the experimental data for the respective real and imaginary parts... --David -- ) Scientific Arts: http://www.scientificarts.com ) Creative Services and Consultation for the Applied ) and Pure Sciences:: David Reiss: dreiss at !SPAMscientificarts.com ) [Remove the !SPAM to send email]