Physics - Advanced Electrodynamics - Electromagnetic radiation and antennas - How Does Your Phone Talk to a Tower?
Everyday EM radiation questions. Q1: 'When you make a phone call, what carries your voice to the cell tower?' A) Sound waves through air, B) EM waves (radio frequencies ~1-3 GHz), C) Electricity through wires. Answer: B! Your phone's antenna creates oscillating currents → radiates EM waves. Q2: 'Why