Wilhelm Röntgen

Wilhelm Conrad Röntgen was a German experimental physicist. He is best known for discovering a special kind of invisible light called X-rays, which people also called “Röntgen rays.” He made this amazing find in 1895 when he noticed that a special type of energy could pass through things that normally block light, like paper or even flesh.

Because of this important discovery, Röntgen received the very first Nobel Prize in Physics in 1901. His work changed medicine forever, because doctors could now see inside the body without surgery. Today, X-rays are used all the time to help find broken bones or other problems inside people.

Röntgen’s name lives on in science, too. An element called roentgenium is named after him to honor his big contribution to our understanding of the world around us.

Biography

Wilhelm Conrad Röntgen was born on 27 March 1845 in Lennep (now part of Remscheid), Prussia. He was the only child of a merchant and a cloth manufacturer. In 1848, he moved with his family to the Netherlands.

Röntgen studied at Utrecht Technical School but was unfairly expelled in 1865. He then attended the Federal Polytechnic School in Zurich, where he earned a Ph.D. in 1869. He became a favorite student of Professor August Kundt and followed him to several universities.

Röntgen worked as a lecturer and professor at various universities. In 1888, he regained his German citizenship and later taught at the University of Munich. He planned to move to the United States but stayed in Munich due to World War I.

Röntgen spent his final years in Weilheim and passed away in Munich in 1923 at the age of 77.

Discovery of X-rays

In 1895, Wilhelm Röntgen was working in his lab at the University of Würzburg. He was testing different types of tubes that let electricity flow through a vacuum. One day, he noticed something strange. When he used a special tube and turned off the lights, he saw a faint glow coming from a screen nearby. This glow happened every time he turned on the tube.

Röntgen realized he had discovered a new kind of ray. He called them "X-rays" because "X" stands for something unknown. He tested many things to see what the rays could go through and what they could not. He even took a picture of his wife's hand using X-rays, showing her bones. His discovery was shared with the world in 1895, and in 1901, he received the first Nobel Prize in Physics for this important work.

Personal life

Wilhelm Röntgen was married to Anna Bertha Ludwig for 47 years until she passed away in 1919. They met in Zurich and married in Apeldoorn, Netherlands, in 1872. They had one daughter, Josephine Bertha Ludwig, whom they adopted after her father passed away.

Röntgen was a member of the Dutch Reformed Church.

Recognition

Wilhelm Röntgen received many honors for his important work. In 1901, he was given the very first Nobel Prize in Physics for discovering a special kind of ray now called X-rays.

He was also invited to join important science groups and received special awards from many places around the world.

Commemoration

In November 2004, the IUPAC named element number 111 roentgenium in his honor. The IUPAP adopted the name in November 2011.

Today, in Remscheid-Lennep, 40 kilometres east of Röntgen's birthplace in Düsseldorf, there is a museum dedicated to him.

In Würzburg, where Röntgen discovered X-rays, a non-profit organization keeps his old lab open for visitors.

World Radiography Day is celebrated each year on November 8 to honor the importance of medical imaging. It began in 2012 thanks to three big groups of experts.

As of 2023, many countries have made stamps to remember Röntgen for his work with X-rays.

Röntgen Peak in Antarctica is named after him.

A small planet called 6401 Roentgen also carries his name.

In 2010, his amazing discovery was featured in a special drawing on Google's home page.