The scale in MEEP are all in terms of some characteristic length scale
(i.e. a, maybe it's the length of a unit cell) you choose.

For example, if a is 1um, then 16X16X3 means 16umX16umX3um; if a is 1nm,
then 16X16X3 means 16nmX16nmX3nm.

Regard,

Simon

we pick some characteristic lengthscale in the system, *a*, and use that as
our unit of distance.

On Fri, Aug 31, 2012 at 1:15 AM, Chiraag Nataraj <[email protected]>wrote:

> I just started using MEEP and it's pretty amazing.  I looked at the note
> about units on the wiki and I understand it.  However, I wasn't clear
> about the length scale.  For example, if I type in:
>
> (set! geometry-lattice (make lattice (size 16 16 3)))
>
> what are the units for the 16x16x3 lattice?  Is it microns?  Nanometers?
>
> Thanks in advance!
>
> - Chiraag
>
>
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