Once upon a time, there was a curious young kid named Alex. Alex loved inventing things and always wanted to know how they worked. One day, he became fascinated with radios and wanted to understand how they transmitted sounds through the air.

Alex decided to seek out someone who could explain the magic of radios to him. After some research, he discovered an old German physicist named Heinrich Hertz. He was famous for his experiments with electromagnetic waves, which were the key to radio transmission.

Excitedly, Alex wrote a letter to Heinrich Hertz, explaining his burning curiosity about radios. To his surprise, Hertz replied and invited Alex to visit him in Germany. Alex's heart leaped with joy!

Alex packed his bags and embarked on an adventure to meet his idol. When he arrived in Germany, Hertz greeted him warmly and showed him his laboratory filled with fascinating equipment.

Hertz patiently explained how radios worked by using an easy example. He showed Alex a pebble thrown into a calm pond, and how the ripples spread out in circles. Hertz explained that radio waves were like those ripples, spreading out through the air.

Alex's eyes sparkled with understanding as Hertz continued to explain how the radio waves carried sound signals. He showed Alex a device that converted sound waves into electrical signals, which were then sent through the air using radio waves.

Inspired by Hertz's teachings, Alex started building his own radios when he grew older. He became a brilliant young radio scientist, inventing new ways to improve radio technology and bring joy to people through music and news.

People from all around the world marvelled at Alex's creations, and he became renowned for his contributions to the field of radio. But he never forgot the day he met Heinrich Hertz, the kind scientist who ignited his passion for invention.