Antonie van Leeuwenhoek

Hello! My name is Antonie van Leeuwenhoek. I lived a long, long time ago in a town called Delft in Holland. I had a shop where I sold soft cloth. I loved looking very, very closely at the tiny threads in the cloth. I wanted to make sure they were perfect. I was always curious about the tiny things you can't see with just your eyes.

I wanted to see things even closer! So, I learned how to make my own special magnifying glasses. They were not like the glasses you see today. Mine were very small but very, very strong. Around the year 1674, I started looking at everything with them. I looked at the leg of a bee, the water from a puddle, and even the gunk on my own teeth! I was so excited to see what the world looked like up close.

One day, I looked at a drop of rainwater through my special glass. What I saw made me so happy! There were tiny little creatures swimming and wiggling around. They were alive! I gave them a name. I called them my 'animalcules,' which means 'little animals.' Nobody had ever seen them before me. I found a whole new world that was too small for our eyes to see.

I lived to be 90 years old, and I never stopped looking at the tiny world all around me. People remember me today because I was the very first person to see and tell everyone about bacteria and other little life forms. My work helped start a whole new kind of science called microbiology, which helps us understand our world better.