Currently, I am writing a statement of purpose for the graduate program, and I want to describe my research experience. In particular, I want to write the following sentence:
I determined that the electromagnetic force is the main type of interaction between the droplets.
At the same time, I was recently corrected that the proper way would be to write
I determined that the electromagnetic force was the main type of interaction between the droplets.
as dictated by the "sequence of tenses" rule.
However, for me, it does not sound right. This phrasing creates a feeling that "the electromagnetic force was the main type of interaction between the droplets" somewhere in the distant past, and now it is not.
I read somewhere on the web that "sequence of tenses" may be violated in some occasions (for instance, while describing widely known scientific facts, e.g. "Newton discovered that the planets attract each other"). Would it be okay to violate "sequence of tenses", when describing my own scientific finding?
The other example that I am interested in is whether I should use
I understood how interesting it is to study physics.
or
I understood how interesting it was to study physics.