Haec Propositio paradoxum est, & ex terminis ipsis magnam praesfert improbabilitatem, quia luminis est illustrare, non autem obscurare superficiem corporis opaci, ad quam terminatur, & cui aliquo tandem modo se communicat.
I think in this case tandem would mean “at last / in the end”. Aliquo is probably an adverb here meaning “wherever”, as it would be redundant to have two relative pronouns right next to each other.
What are the two relative pronouns next to one another? “Aliquo” is an indefinite adjective/pronoun/adverb, and “cui” is definitely the relative pronoun. Do we all agree that the antecedent of “cui” is “superficiem”?
I’m leaning with you towards “tandem” meaning “finally” as a summary of argument, used much like “denique.” Can someone look up “tandem” used with other adjectives in the OLD? Mine’s in the shop.
Who’s the author of the passage? Maybe we ought to ante up and post our translations for the passage?
Thans to everyone; That dialogue was very useful. The same author has a similar construction in other part of the book which appears similarly confusing to me; should I just take it literally?
“aliquam tandem latitudinem”
from the complete sentence
Excipiatur deinde in tabella candita, vel in folio chartæ albæ super pavimento extensæ, conus prædictus, seu basis eius lucida CD, cum umbra GH, quam proijcit opacum EF insertum cono, & illuminatum in utroq; sui extremo E & F: quæ tamen umbra secundùm leges Opticas non erit exactissime præcisa, & terminata in uno punto G versùs una partem, & in uno alio puncto H versùs aliam: sed ratione foraminis AB, aliquam tandem latitudinem habentis, simulq; ratione Solis in latum extensi , aliave de causa erit confinium umbræ aliquo modo incertum propter penumbram quandam, & cum sensibili decremento, seu ut vocant exsumatione luminis per spatium IG inter certam umbram, & nitidum lumen ad unam partem prædictæ basis, & per spatium HL ad aliam partem.