Your question is vague.
I have presented to you a direct, independently repeatable, verifiable fact. You can do the experiment yourself.
Do you trust your own eyes?
As an ECE, I’d be piss poor at my job if I trusted my eyes all of the time (I mean, I can’t see electricity ... I rely on lots of measurements, simulations, and knowledge when I’m helping engineer a custom computing platform for a particular task). Moreover, I asubscribe to Einstein’s famous quote when it comes to obvious/common sense kinds of things like “trusting your eyes” ... “Common sense is the collection of prejudices acquired by the age of eighteen.”
However, yeah, day and night are only part of the reasons why we know the Earth rotates. Classical Newtonian physics explains why we know the Earth rotates, and how it moves through space, etc. We can observe bodies in the cosmos and predict their movements with ridiculously precise accuracy based on those physics (not perfect mind you, but there’s only so much of the universe we can see).
We know it is round (for the most part ... it bulges a little in the middle) by direct observation (i.e. satellites, man exploring space). Moreover, we can compute with extreme accuracy when the sun “rises” and “sets” at any point on the planet. We can predict when eclipses will occur to the second, and we can also determine *exactly* how an eclipse will look to an observer at any point on the Earth (take your pick too ... lunar or solar).
I mean, you’re living in the dark ages if you think you’re going to prove the Earth is flat and/or it isn’t rotating. If you have the skills to be a chemical engineer, why not apply your gifted mind to something worthwhile instead of ridiculous global, multigenerational, scientific conspiracies.
Now, maybe the Earth is not doing those things when the Earth is observed from some kind of other dimension or if you’re viewing the Earth from a single point in time ... I don’t know ... maybe spacetime in your part of the world is screwed up ... however, in the 4 dimensions we experience, we know the Earth is rotating :-).
You know, if the whole flat / non-rotating Earth / astro-scientific conspiracy thing was a trolling movement just to rile people up, I’d probably join you guys ... it’d be a ton of fun coming up with this nonsense and making people angry over nothing ... however, I kind of weep when I learn that otherwise smart people are serious about it ...