This past term I taught my “Biophysics for non-science majors” course, actually called “The Physics of Life,” for the first time since 2018, and, more notably, for the first time since writing my pop-science book, So Simple a Beginning: How Four Physical Principles Shape Our Living World (blog post; Amazon) — published in 2022 (and … Continue reading Course recap: “The Physics of Life” Winter 2024
Usually when I write about biophysics, it’s with the uplifting message that understanding physics helps us make sense of biology, bringing varied phenomena together under umbrellas of general principles. This is true, and there are countless examples. Brownian motion explains the meandering of neurotransmitters and the patterning of embryonic body segments. Electrical interactions influence the … Continue reading Enhance Your Productivity by Ignoring Biophysics
Several times so far I’ve taught a graduate course on biophysics. Last term I taught it again, but with a twist: it was a combined graduate and undergraduate course. There were two motivations for this. First, biophysics is unfamiliar enough to physics graduate students that upper-division undergraduates aren’t at any significant disadvantage. In fact, I’ve … Continue reading Recap of a Graduate (and Undergraduate!) Biological Physics Course
Here’s this year’s recap of notable books I read, featuring Russians new and old, Scythians (all old), and criminals of various sorts. (Previous years: 2022, 2021, …, 2015.) 1965 vs. 2023 I wrote a few months ago about my excursion into 1965, reading seven books published in that year. I won’t revisit any of these … Continue reading The Year in Books, 2023
Each of us has a genome of about 3 billion DNA nucleotides — a sequence of 3 billion As, Cs, Gs, and Ts. Knowing what this sequence is, whether our own sequence or that of a bacterium, a barley plant, a baboon, or anything else, tells us about the repertoire of tools its genome encodes, … Continue reading How did we make reading genomes a million times cheaper? — What is biophysics? #18
Perhaps when blowing your nose, or the nose of a sick child, you’ve wondered where all this stuff comes from. How can one nose make so much mucus? This is #17 in our series of biophysical questions (#1, #16). The answer involves electrical forces and the physical character of mucus. Mucus, the gooey liquid secreted … Continue reading How can one nose make so much mucus? — What is biophysics? #17
Viruses encode their genomes in RNA or DNA, which they pack into a tiny space. For example, Varicella zoster, the virus that causes chickenpox and shingles, stuffs a double-stranded DNA molecule about 40,000 nm in length into a shell about 200 nm in diameter. This is even more impressive than it may seem because DNA … Continue reading Can viruses explode? — What is biophysics? #16
There’s a lot of advice out there for prospective applicants for academic faculty positions [1], so you don’t really need mine. However, some advice is outdated and some is incomplete, so I thought it would be worthwhile to add a small bit of information based on experiences from my department’s search last year (Physics, University … Continue reading Zoom Interview Questions and Other STEM Faculty Hiring Tidbits
Last Spring, I taught the second term of University of Oregon’s statistical mechanics / thermodynamics for physics majors course (syllabus). I might at some point describe how the course went and what lessons might be drawn, beyond the key lesson that statistical mechanics is a wonderful subject. For now, something far less substantial: I often … Continue reading Statistical Mechanics Has a Good Beat and You Can Dance To It
What makes one microscope better than another? A few weeks ago I co-ran a week-long Physics and Human Physiology day camp for high school students, part of the University of Oregon’s “SAIL” program that especially targets low-income students. I’ve written about SAIL before (2019, 2017, 2014) — this was our 14th Physics + Human Physiology … Continue reading A Few Flavors of Microscopes — SAIL recap, 2023
The Eighteenth Elephant 