Big Bang
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What caused the expanding universe to cool? (It may not be what you think)
Expansion leads to cooling. That’s what I was taught anyway. And so when I read that the expansion following the Big Bang caused the universe to cool, I first thought, “okay…” But then I thought some more. “Wait a minute! Expansion against what???” The reason a system cools as it expands it that it pushes… Continue reading
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Impactful illustrations of scientific concepts
I took a wonderful one-day seminar by Edward Tufte a long while ago titled “Analyzing/Presenting Data/Information” and was blown away by the possibilities he opened inside my mind. I walked out of the seminar deeply inspired to create illustrations for my book beyond the standard linear timelines and black & white photos of the early… Continue reading
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Happy birthday, Henrietta Leavitt!
You’ve likely heard of the Big Bang theory and the name of Edwin Hubble associated with it. But a person you may not have heard of is Henrietta Leavitt. Leavitt played a critical role in enabling Hubble’s accomplishment. Seeing as today’s her birthday, let’s celebrate her, her achievement, and her impact on astronomy and cosmology.… Continue reading
Block by Block – The Historical and Theoretical Foundations of Thermodynamics. “Hanlon has written a masterpiece.” – Mike Pauken, Senior Engineer, NASA’s Jet Propulsion Laboratory (JPL) and author of Thermodynamics for Dummies
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About Me
Hi! I’m Bob Hanlon. After earning my Sc.D. in chemical engineering from the Massachusetts Institute of Technology and enjoying a long career in both industry and academia, I’ve returned to school, my own self-guided school, seeking to better understand the world of thermodynamics. Please join me on my journey.
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