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Paul Callaghan, 64; physicist led work in magnetic resonance

WELLINGTON, New Zealand - Sir Paul Callaghan, a top New Zealand scientist who gained international recognition for his work in molecular physics, has died after a long battle with cancer. He was 64.

“New Zealand has suffered a tremendous loss,’’ Sir Peter Gluckman, who is Prime Minister John Key’s chief science adviser, said in a statement Saturday.

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“Paul has been our most distinguished public scientist, and in the world of molecular physics has been a giant.’’

Dr. Callaghan, who was diagnosed with bowel cancer in 2008, was best known for his work with magnetic resonance, a field that has practical applications in everything from health care to industrial production. He was also known for his work on nanoscience, which involves studying properties of substances at the scale of the individual atom.

He won numerous accolades over his career and was elected a Fellow to the Royal Society of London. In 2009, he was honored with a knighthood and in 2011 was named New Zealander of the Year.

An outspoken public intellectual, Dr. Callaghan argued in favor of commercializing science. In 2004, he founded Magritek, a company based in Wellington that used magnetic resonance imaging and nuclear magnetic resonance for industrial and research applications.

Gluckman said Dr. Callaghan was able to make science accessible to regular New Zealanders by explaining it in a straightforward and entertaining way, and that he was able to use radio, books, and public lectures to promote his view that the country could use science to become a wealthier and better place.

Deputy Prime Minister Bill English said in a statement that Dr. Callaghan earned the respect of everyone, even those who disagreed with him.

“His knowledge and willingness to teach others was an inspiration to not only the science community, but New Zealand as a whole,’’ English said. “He brought a unique combination of brilliance, integrity, and courage to public debate.’’

Dr. Callaghan began his studies at Wellington’s Victoria University, where he completed a degree in physics, before continuing them at the University of Oxford in England, where he earned a doctorate.

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