Not quite?

What I'm going to say is not exact but as a first approximation it should be okay[1].

English is a Germanic language[2]. Most (all?) common words in Modern English share a common ancestor with their counterparts in Modern German/Dutch/Swedish/Danish/Swiss/Norwegian -- I've left out a bunch, sorry! So lexically and structurally they are very similar. That doesn't mean that most words are Germanic in origin, however it does mean that in any given text most word _occurrences_ are going to be. This accounts for a quarter (~25%) of the lexicon but the _bulk_ of words in any given text.

So words like "is", "can", "will", "must", "water", "the", "and", "word", "bread", "blood", and so on.

Of the rest English has borrowed from _many_ sources. Latin (but this is true of many languages) and French being equally predominant, a bit less than 30% each. Latin because of the Roman Empire and subsequently Latin being the language of European learning. French because of the Norman conquest of England. You ought not to think of this as being borrowed twice over from Latin, once directly, once indirectly. The influence of French on English is immense.

Of the remaining, (Ancient) Greek at a bit more than 5% features predominantly -- though it punches above its weight because so many crucial technical words are from this source, words we'd be hamstrung without.

Then words derived from proper names, then words derived from other European and Indo-European languages. Then the rest of the world.

As Persian/Farsi is an Indo-European language it would be unwise to say there is no link. Especially if the technology is old and the technology spread. And I think a sibling-ish comment points out that there is a direct link.

[1] https://en.wikipedia.org/wiki/Lists_of_English_words_by_coun...

[2] http://www.theguardian.com/education/gallery/2015/jan/23/a-l...