Abdul Qadeer Khan was a scientist. 
Abdul Qadeer Khan was a scientist. 

Abdul Qadeer Khan was a famous scientist from Pakistan. 
To separate uranium, he used gas centrifuges. A centrifuge is a machine that spins very fast. This spinning helps sort different parts of the gas. Khan worked with these machines in Europe. Later, he helped Pakistan build its own nuclear program. He started the Khan Research Laboratories in 1976. People often call him the father of Pakistan's atomic weapons. 
His work was often secret. Some people accused him of taking secrets from other countries. This is called espionage. In 2004, he was put under house arrest. This means he had to stay in his home. A court later said he was free to leave. Khan died in 2021. He was given a state funeral in his home country.
Abdul Qadeer Khan was a famous Pakistani scientist. 

Khan became an expert in a hard job called uranium enrichment. Uranium is a metal used for nuclear power. To use it for weapons, scientists must separate its different parts. Most uranium is a type called U-238, which cannot be used for weapons. Only a tiny amount is U-235, which is fissile.
Khan studied at many great schools in Europe. He went to the Technical University in West Berlin and the Delft University of Technology. Later, he earned a doctoral degree in Belgium in 1972. He worked for a company called FDO in the Netherlands. This company helped a group called URENCO. URENCO used centrifuges to make nuclear fuel. While working there, Khan learned the secrets of how these machines work. 
In 1974, India performed a nuclear test called "Smiling Buddha." This event made Khan want to help Pakistan. He wrote to the Pakistani Prime Minister, Zulfikar Ali Bhutto. In 1976, Khan founded the Khan Research Laboratories, or KRL. He served as the chief scientist and director there for many years. However, some people accused him of espionage. Espionage is when someone takes secret information without permission. He was accused of taking centrifuge designs from URENCO.
Khan's life remained complicated for a long time. In 2004, the government put him under house arrest. This means he was not allowed to leave his home. He later won a lawsuit and was freed in 2009. Different leaders had many different opinions about his work. After he died on October 10, 2021, Pakistan gave him a state funeral. He was buried in Islamabad. His story shows how science and politics are often linked.
Abdul Qadeer Khan was a prominent Pakistani nuclear physicist and metallurgical engineer. 

Khan's academic journey took him through several prestigious European technical universities. He graduated from the University of Karachi in 1956 with a Bachelor of Science in physics. He focused his studies on solid-state physics before seeking advanced training abroad. In 1961, he moved to West Germany to study material science at the Technical University in West Berlin. He later transferred to the Delft University of Technology in the Netherlands in 1965. By 1972, he earned a DEng in metallurgical engineering from the Katholieke Universiteit Leuven in Belgium. His doctoral thesis involved complex work on martensite and graphene morphology.
After his studies, Khan entered the professional world of nuclear technology in Europe. He joined the Physics Dynamics Research Laboratory, known as FDO, in Amsterdam. FDO acted as a subcontractor for the URENCO Group, an international uranium enrichment consortium. Khan eventually secured a senior technical position directly with URENCO to study uranium metallurgy. His work focused on the highly technical process of uranium enrichment. This process is necessary because natural uranium consists of different isotopes with different properties. 
Uranium enrichment is a difficult task due to the specific makeup of the metal. Natural uranium contains 99.3% uranium-238, which is non-fissile. It also contains 0.0055% uranium-234. Only a tiny fraction, about 0.71%, is uranium-235, which is a fissile material. To separate these isotopes, scientists use the Zippe-type centrifugal method. This involves turning uranium hexafluoride (UF6) gas into a state where it can be processed. The gas is placed in centrifuges that rotate at speeds up to 100,000 revolutions per minute. This rapid spinning allows for the electromagnetic separation of the isotopes. Khan spent his time from 1973 to 1974 improving the efficiency of these machines.
In 1974, the geopolitical landscape changed when India conducted a nuclear test named "Smiling Buddha." 
Khan's career was also marked by serious allegations of nuclear proliferation and espionage. During his time in the Netherlands, colleagues suspected he was stealing classified centrifuge designs. It was reported that he took URENCO documents home to be translated by his wife. In 1983, the Netherlands sentenced him in absentia to four years in prison for espionage, though this conviction was later overturned. Following the September 11 attacks, concerns about weapons of mass destruction grew globally. Former CIA Director George Tenet described Khan as being "at least as dangerous as Osama bin Laden" due to his role in proliferation networks.
In 2004, the Musharraf administration debriefed Khan regarding evidence of nuclear proliferation provided by the United States. Khan was subsequently placed under house arrest. He faced accusations of selling nuclear secrets illegally, though he later retracted his admissions and leveled accusations against former leaders. In 2009, the Islamabad High Court declared his debriefing unconstitutional and freed him from house arrest. The Obama administration expressed concern following this verdict, noting that he remained a proliferation risk. Abdul Qadeer Khan died on October 10, 2021. He was honored with a state funeral at the Faisal Mosque before being buried in Islamabad.
🖼️ Images & Media (6)
More to explore
✨ What else?
Related topics you might enjoy
🔬 Go deeper
More advanced topics to explore
🪜 Step back
Simpler topics to build understanding
What is Nepedia?
A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.