I have nothing good to say about Baltimore in August. Ok, the farmers’ market is moving into high season, peaches & tomatoes, also okra — that’s good. Digression: I spent childhood on a small farm in the midwest making internal proclamations and declarations about freezing beans and canning applesauce in a hot kitchen, like, if […]
convection
A couple of Harvard astronomers just wrote an essay in a new journal called Nature Astronomy. That’s not the most riveting opening sentence you’ve ever read; I apologize. But the essay was odd, a kind of rumination-with-examples about how things in astronomy on vastly different scales nevertheless have similar structures. That is, electrons orbit atomic […]
The older I get, the more people I know who have lost what they could not afford to lose. I’ll repeat: lost means gone, unrecoverable, not coming back; and what these people lost, they still need and want. The problem is nearly universal and has no obvious solution, or rather, the solution is idiosyncratic and […]
This thing is just simmering soup, circulating oceans, the granules on the sun’s surface, and the driver of the continental plates; it’s just convection. That is, heat rises and cold falls, updrafts and downdrafts, up in the middle and down at the sides: a cell of convection. This convective cell is called a supercell and […]
Heat rises, cold falls, and like a pan of soup on a hot stove, the earth boils, exceedingly slowly. The boiling is called convection: columns of heat rise from the earth’s hot core, move up through the viscous solidity of the mantle, cool at the crust, roll over and fall back down. The crust that […]