Complex sentence: He remained convinced this was due to partial entrainment or aether dragging, though he did not attempt a detailed explanation, and ignored critiques demonstrating the inconsistency of his results, and the refutation by the Hammar experiment.
Split into simpler sentences: He remained convinced this was due to partial entrainment or aether dragging, though he did not attempt a detailed explanation. He ignored critiques demonstrating the inconsistency of his results, and also the refutation by the Hammar experiment.