How Radar Actually Works: Pulses, Doppler, and Phased Arrays
How radar actually works: transmitting pulses, echo timing and range, the Doppler shift for velocity, phased-array beam steering, and why stealth shapes matter.
How MRI Actually Works: The Physics of Magnetic Resonance
How MRI actually works: nuclear magnetic resonance, the main magnet and gradients, RF pulses, T1 and T2 relaxation, and how a spatial image is reconstructed.
How Lithium-Ion Batteries Actually Work (and Degrade)
How lithium-ion batteries actually work: intercalation chemistry, the SEI layer, charge and discharge, why they degrade, and what causes thermal runaway.