Mike McCulloch's Quantized Intertia theory and experiments are one of the more fascinating activities in physics

his textbook is very well written and informative

Physics From The Edge: A New Cosmological Model For Inertia https://www.amazon.com/dp/B00M80DKFC?ref_=cm_sw_r_apin_dp_MA9MTBC6DTA93QR85EMF