This is a ridiculous analogy for the Trinity.....

Read some of Peter Abelard's writings on the Trinity to know how to defend the trinitarian argument.

 You are right that Quran is not a book for science. But tnc is right about not agreeing with you.

 Part of your post was right about Galileo and the anti-science attitude of the church. The matter about science and Quran can be understood as follows:

 The science or nature is the work of God (Allah). He has created or made the nature and its rules (laws) etc. The entire Universe is the work of God in which the laws of science are applying. The laws are also made by Allah.

 The Science is the work of God and the Quran is the word of God. There is no difference in the work (Kaam) of God and the word (Kalaam) of God. God will not say something else and do something else. There is no disparity between His work and His word.

 In that we say that whatever is described in the Quran, even though it is not as a text book of science, whatever is described is according to science. Or, at least the science has not been able to disprove anything that is stated in the Quran. Rather most of the scientific truths are described in the Quran.

 I will give just one very small example: The scientists are struggling to find life in other planets. They are looking for water in the other planets first. Why?? Because they know that if there will be water there will be life. And please remember that Quran says about it: "We have created every living thing from water". See Below:

 [21:30] Do not the disbelievers see that the heavens and the earth were a closed up-mass, then We opened them out? And We made of water every living thing. Will they not then believe?

Then there is mention of creating everything in pairs. See below:

 Also:

 78:8] And We have created you in pairs.

 These and many other things are described in the Quran and science admits those things.