Lieb and Yngvason describe in this article how the concept of entropy can be explained without resorting to heat engines or statistical mechanics, and without even the a priori imposition of temperature.
For anyone who has tried unsuccessfully (like me) to find familiar stars in well-known constellations through a telescope, the competition that David Freedman describes sounds impossible. The "sport" is to see how many of the 110 celestial objects in the Messier catalog you can locate and identify during a single night of observation.
I'm not a big fan of science fiction. I find "real" science to be generally more interesting; the fictionalized kind usually requires me to pretend that the universe is far different than what I believe to be the case. In fiction, travel between planets (or even solar systems) is accomplished quite easily, by suspension of the speed limit imposed by relativity.
For most of us chemists, our knowledge of the universe is pretty good from the atomic level upward, but when students ask us (as they sometimes do) about what it is that holds the nucleus together, or what a "string" is, or about quarks, leptons, and any of the other particles that are not electrons, protons, or neutrons, we begin to mumble.
In this "Report", Ken Silverstein relates the case of David Hahn (apparently not related to Otto) whose quest for an Atomic Energy merit badge escalated into an attempt to build a working model of a breeder reactor. According to Mr.
If you have ever wondered (as I have) how a fever thermometer actually works (but have never felt good enough while you were wondering to do any investigation) then you should look at this article in "How Things Work", a feature of The Physics Teacher edited by H. Richard Crane of the Physics Department of University of Michigan.
The very first of "Hal's Picks", back in 1995, was the announcement of the first experimental observation of a Bose-Einstein condensate. This can be considered as a new phase of matter, in which atoms in a cold cluster lose their separate identities, because their deBroglie wavelengths exceed the dimension of the group in which they find themselves.
Robert Ehrlich teaches physics at George Mason University. This is the third book by him that I have read recently.
I picked up this volume because its title suggested that it would encourage hands-on science activities that are essential to good teaching and effective learning. Unfortunately, I discovered on reading it that the author combines a deep antagonism for the scientific "establishment" with credulity for numerous fringe ideas.