This document discusses inductive charging, which involves wirelessly charging objects through electromagnetic induction without direct contact. It works over short distances to charge devices like phones and laptops. The process involves a changing magnetic field generating a current in the receiving conductor. Advantages include eliminating power cables and never having low battery devices. Disadvantages are lower efficiency and increased heat compared to wired charging. The conclusion is that wireless power transmission is now a reality and efficiency has increased from Tesla's initial 20% to over 80% today.