Iceland Spar, how wide and deep IS this symbol?

[Mark Kohut]

In a book on Pynchon or in some Pynchon Notes or two, sourcing
Sir Thomas Browne (1605-1682) as an influence on early Pynchon is done.
 I hardly know his work but
 
Basil Willey in his English Moralists writes this: "With Browne we return
to the split between Faith & Reason......there are two orders of truth...
truth of faith and truth of science" (called philosophy then).  How resolve?
"Believe them both at once, but at different levels of oneself."................
 
Earlier,  Bacon segregated faith from scinece to protect science....Browne
does so to protect faith............................"methinks there be not
impossibilities enough in religion for an active faith....I love to lose myself
in a mystery, to pursue my reason to an O altitudo"---Religio Medici
 
I offer this thus re it all....