On Fri, 28 Jan 2011 14:26:45 +0100, Stefan Kapser <[email protected]> wrote: > Yes, exactly, I enter omega, sigma and gamma there. I got the data from > a colleague and would like to use it, but in my simulation a is defined > as 1nm and in his it's 1µm. So what do I need to do to convert it or can
> I just use his values? > Thanks! > Stefan > In this case you only need to convert the units of the frequencies for omega and gamma. Giovanni P.S. Sorry for the confusion between the personal email address and the Meep mailing list address, when pressing "answer all" the email program puts the name of the sender first and I often forget about it. > > On 01/28/2011 02:21 PM, gpipc wrote: >> On Fri, 28 Jan 2011 11:16:03 +0100, Stefan Kapser >> <[email protected]> >> wrote: >>> Dear Meep users, >>> I have got the Polarizabilities in Meep units for a=1µm and would now >>> like to use these in a simulation with a=1nm. >>> Since the unit of the polarizability is A^2 s^4 / kg I want to convert >>> the meep units back to SI and then to the new Meep units. >>> The unit of time is set by the unit of distance, so a=1µm defines my >>> unit of time as 10^-6m/(3*10^8 m/s) for one Meep unit. >>> How do I handle the A and kg? What are the units for current and mass in >> >>> Meep? >>> Thanks a lot for your help! >>> Regards, >>> Stefan >> >> >> Before trying to answer your question - do you refer to the quantities >> that you input in Meep using the "make polarizability" expression? >> Because >> that "polarizability" is actually the relative dielectric constant, which >> is a pure number. >> >> >> Giovanni >> ---------------------------------------- >> Message sent by Cup Webmail (Roundcube) >> ---------------------------------------- Message sent by Cup Webmail (Roundcube) _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
