Exodus and exile: the structure of the Jewish holidays

Reviewed Book: Harris, Monford. Exodus and exile: the structure of the Jewish holidays. Minneapolis: Augsburg Fortress, 1992

Pressure Distribution on the MK-13 Series Torpedoes with Shroud Ring Tails

This report is a supplement to a previous report of this laboratory entitled "Pressure distribution. Measurements on the MK 13-1, 13-2. and 13-2A Torpedoes", file marked Section No 6.1-sr207-1643, and dated June 23, 1944. It is a part of the program of investigation requested and authorized by Dr. E. H. Colpitts, Chief of Section 6.1 of the National Defense Research Committee, in a letter dated October 8 1943. The preceding report, referred to hereafter as Report 1643, included measurements of the pressure distribution about the bare hull and about the hull with fins but without shroud ring tail. The tests reported herein cover pressure distribution measurements on the torpedo with fins and shroud ring tail. The main objective of these investigations was to determine whether or not the depth control mechanism is actuated by true hydrostatic pressure.This is of interest because the immersion mechanism can keep the torpedo at set depth only if it is actuated by true hydrostatic pressure of the water at the running depth, and if this pressure is unaffected by variations in speed and in yaw or pitch angles

FSEM 133

Fire is the quintessential human technology. It is also a potent symbol whose meaning has become central to our national and community discourse. Fire is the at the root of countless traditions, myths, and foodways, and through controlled combustion of fossil fuels, fire has grown to be the central process at the heart of modern industrial and agricultural systems. The deliberate release of energy through different forms of combustion has changed the course of human social- and potentially, biological evolution. But where does the energy in combustion come from? How do humans harness that energy to do work? And how do storytelling and cultural perceptions of fire influence the choices individuals and societies make about what resources to burn, where to burn them, and what to do with the waste products? The goal of this course is to address four fundamental fire questions, 1) What do we burn? 2) Why do we burn it? 3) What are the consequences? 4) And who decides? Readings and discussion focus on the historical, cultural, and anthropological roles that fire, heating, and combustion have played in human societies. These will help provide the motivation for the empirical in-class laboratory projects and field trips that make up the key assignments in the course. Together, we’ll explore the physical, chemical, and geological processes and impacts of combustion