Friday, October 27, 2023

The Helmholtz Coil and the Maxwell Coil

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To do magnetic resonance imaging , you need a static magnetic field that is uniform and a switchable magnetic field that has a uniform gradi...
Friday, October 20, 2023

Mr. Clough

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A teacher affects eternity; he can never tell where his influence stops.  Henry Adams Stephen Clough, from the 1975 Homestead Jr.-Sr. Hig...
Friday, October 13, 2023

J. Robert Oppenheimer, Biological Physicist

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J. Robert Oppenheimer. Did you watch Oppenheimer in the theater this summer? I did. The movie told how J. Robert Oppenheimer led the Manha...
Friday, October 6, 2023

The Dobson Unit

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In Chapter 14 of Intermediate Physics for Medicine and Biology , Russ Hobbie and I discuss the risk of DNA damage —and therefore cancer ...
Friday, September 29, 2023

Decay Plus Input at a Constant Rate Revisited

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In Chapter 2 of Intermediate Physics for Medicine and Biology , Russ Hobbie and I discuss the problem of decay plus input at a constant rat...
Friday, September 22, 2023

The Slide Rule

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In Chapter 2 of Intermediate Physics for Medicine and Biology , Russ Hobbie and I discuss semilog plots , where the vertical axis is marked...
Friday, September 15, 2023

Meeting of Minds

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An episode of Meeting of Minds , with (l-r) Atilla the Hun, Emily Dickinson, host Steve Allen, Charles Darwin, and Galileo Galilei.   When I...
Friday, September 8, 2023

The Greatest Shortcoming of the Human Race is our Inability to Understand the Exponential Function

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Ten years ago yesterday, on September 7, 2013, Physicist Albert Bartlett died at the age of 90. Russ Hobbie and I mentioned Bartlett in C...
Friday, September 1, 2023

Is Japan's Plan to Release Radioactive Water into the Pacific Ocean Safe?

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When listening to NBC Nightly News on August 24, I heard Lester Holt discuss Japan ’s plan to release into the Pacific Ocean treated wast...