This post was inspired by Don Lincoln’s YouTube video “Subatomic Stories: Is the Planck length really the smallest?” In his Q&A (where he responds to questions from prior videos), he notes a caveat about the law of conservation of energy. Energy may not be conserved … because space-time can change. He offers some links for… Continue reading When conservation of energy goes out the window?
In previous posts, I’ve discussed how important nature’s symmetries are to modern physics. So critical, in fact, that Nobel laureate PW Anderson wrote in his widely read 1972 article More is Different that “it is only slightly overstating the case to say that physics is the study of symmetry.” “It is increasingly clear that the… Continue reading Symmetry → conservation laws
Over the weekend, I started reading Sean Carroll’s The Particle at the End of the Universe. Well written . At times his colloquial description of a concept prompted me to: (1) wonder if he was referring to a particular technical phenomenon; and (2) explore the specialized, technical background of that concept. In either case, quite… Continue reading Vocabulary at the end of the verse