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Timothy Jorgensen

Director of Health Physics and Radiation Protection Graduate Program, Georgetown University

is an associate professor of radiation medicine at Georgetown University in Washington DC. His latest book is Strange Glow: The Story of Radiation (2016). He lives in Maryland.

Written by Timothy Jorgensen



Recent Comments

The cold fusion horizon

Timothy Jorgensen

Cold fusion advocates shouldn’t make too much of the fact that “the field never entirely went away, nor vanished from the laboratories of respected institutions.” The fact that it persists says nothing about cold fusion’s validity. As mathematician/physicist James Maxwell Clerk once said regarding the the old corpuscle (particle) theory of light: “There are two theories of the nature of light, the corpuscle theory and the wave theory; now we believe the wave theory because all those who believed the corpuscle theory have died.”

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A ‘humanely’ killed animal is still killed – and that’s wrong

Timothy Jorgensen

I’ll start worrying about humans killing animals once humans have stopped killing humans. I wish all this ethical fervor for animals were redirected at protecting helpless humans from cruelty and death. Protecting children might be a nice place to start. Images of that battered little boy rescued in Allepo come to mind.

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‘Chemophobia’ is irrational, harmful – and hard to break

Timothy Jorgensen

I think natural versus synthetic is only one part of the problem with chemophobia. A bigger problem is the failure of the public to understand that “the dose makes the poison” (Paracelsus, 16th century). It is the dose that converts a nutrient into a poison, a drug into a poison, a food preservative into a poison, etc. And it doesn’t make any difference whether the chemical is natural or synthetic. A similar problem exists with radiophobia. Radiation is radiation, whether manmade or natural, yet people fear the radiation from security scanners at airports more than the radiation exposure they get from flying in the plane. (Cosmic radiation doses from hig...

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