5.1 Phase and phase difference

In this section I am considering sine waves that have the same frequency, but are out of step with each other.

Suppose we have two detectors at fixed points, A and B. At this moment in time A is in a high pressure region and B in a low pressure region. If we were to look again shortly later B would now in a high pressure region and A in a low pressure region. The pressures at A and B would be out of step with each other. The pressure variation at B is not in phase with that at A. The ex
Author(s): The Open University

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Copyright © 2013 The Open University

Health Care and the Candy Store Called Socialism
In socialist countries of old, it was easy to find cookies and candies in state-owned stores while fresh meat and bread was rare, writes Jim Fedako. This audio Mises Daily is narrated by Joe Kohlhaas.

Writing Creatively for Business
In this session we'll be looking at the sort of things business writers do and that you might be doing. At the end of this introductory session, you should have an idea of the range of purposes underlying written communications for business and not-for-profit organisations, and the wide variety of forms that such writing takes. You'll be trying your hand at a couple of short business writing assignments, and should gain a sense of how working in this area can be creatively challenging and fulfil
Author(s): Tom Scott

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Journées Emois Paris 2014: Conséquence de l’hétérogénéité interne à un hôpital lors ...

Titre : Journées Emois Paris 2014: Conséquence de l’hétérogénéité interne à un hôpital lors d’un sondage « qualité »

Intervenant: Audrey LELONG, CHU de Clermont-Ferrand

D1 : Qualité des pratiques et des soins : évaluation, indicateurs, pertinence des actes et des stratégies II
Modérateurs : M BREMOND, P OBERLIN
D-1-1 DUCLOS A, ...
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Virtual Maths, Shapes, Space and Measure, Rearranging Formulae
Interactive simulation, rearranging formulae (letters and numbers)
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2.6 Centre and periphery

Here you have considered some of the ways in which the power and authority of the emperor were communicated to the inhabitants of the empire. The full dynamics of the relationship are difficult to reconstruct especially as the view gained is mainly from Rome looking out to the provinces rather than vice versa. It was important for the emperor to appear to be a competent ruler of the empire. It was one method used by his peers and successors to evaluate an emperor's reign. But it is often diff
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Introduction to the work of Mark Philp
John Dunn (Cambridge) gives a broad overview of the work and legacy of Mark Philp. This talk, introduced by current Head of Department Elizabeth Frazer, is taken from 'A celebration and critical evaluation of the work of Mark Philp'. Mark Philp was our founding Head of Department (2000-2005) and Tutorial Fellow at Oriel College (1983-2013). He is now, since 2013, Professor of History at the University of Warwick. His work in the fields of political thought and political theory are notable for t
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Creating value for customers by innovating service delivery
Kamalini Ramdas, professor of Management Science and Operations, argues that organisations able to harness innovation in service delivery can create 'tremendous' value for both their customers and themselves.
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4.6 Systems engineering: the recent development of a discipline

The recent development of systems engineering can be dated from two events. First, following the lead of the US Department of Defense and its introduction of standards for contractors, systems engineering was taken up by companies such as Boeing, Lockheed Martin and, in the UK, British Aerospace, Marconi and the Lucas Group. Second, in August 1990, a group of individuals interested in systems engineering met in Seattle (Box 10 – extract from a paper presented at the International Committee
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Evergreen State: Exploring the History of Washington's Forests
This curriculum packet consists of information and primary documents related to the history of Washington's forests. These materials are intended to provide students with an opportunity to investigate attitudes toward and uses of this natural resource. Middle school students may find some of the documents to be challenging reading, but most of the documents could profitably be used in a middle school, high school, or university course about the history of the Pacific Northwest.
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Food Force
From the United Nations World Food Programme (WFP), the world's largest humanitarian agency, Food Force is a free educational video game telling the story of a hunger crisis on the fictitious island of Sheylan. Comprised of 6 mini-games or "missions", the game takes young players from an initial crisis assessment through to delivery and distribution of food aid, with each sequential mission addressing a particular aspect of this challenging process.
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Acids and Bases
You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found:Strong and Weak Acid and Base Problems, Determination of the pH Scale by the Method of Successive Dilutions, St
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Chemical Equilibrium
You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found: Cobalt Chlorid and LeChatlier's Principle and DNA Binding.
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Molarity and Density
You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found: dilution problems, Sucrose problem, Making Solutions from Solids, Metal Density problem, Liquid Density proble
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Quantitative Analysis
You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found:Unknown Silver Chloride and Gravimetric Determination of Arsenic.
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Body With Thruster Model
The Body with Thruster Model shows the motion of a disk with an attached rocket engine. You can drag the engine to change its distance from the center of the disk and you can adjust the thrust of the rocket engine using sliders. The mass of the rocket and its connecting rod are assumed to be negligible. The trajectory of this single-body model is intuitively challenging and difficult to visualize.
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The Art of Interpretation: A.C.T.
SPARK goes backstage at the American Conservatory Theatre (ACT), as Artistic Director Carey Perloff takes on one of the 20th century's most important and challenging plays – Samuel Beckett's "Waiting for Godot." This Educator Guide explores Beckett's work and absurdism in literature.
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GEOLogic: Continental Drift and Plate Tectonics
GEOLogic questions are puzzles that were developed to support students understanding of geoscience concepts while challenging them to develop better logic and problem solving skills. In this exercise, students are asked to match up lecturers with what day and time they teach, and how many students they have in each class based on clues given from several different perspectives. In the second part of the activity, students are asked to learn more about the historic figures mentioned by doing read
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GEOLogic: How Much of the State is Wet
GEOLogic questions are puzzles that were developed to support students understanding of geoscience concepts while challenging them to develop better logic and problem solving skills. In this exercise, students are asked to match up students with their home state, and their states with the area and percentage of area of surface water that they contain, as well as where each of the states rank nationally in terms of water area. Students are given clues from various perspectives to help them deduce
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GEOLogic: How Well Do You Know Your National Parks and Memorials
GEOLogic questions are puzzles that were developed to support students understanding of geoscience concepts while challenging them to develop better logic and problem solving skills. Using a game show format, this exercise asks students to associate historical figures with a particular National Park or Memorial, as well as the number of points each student contestant scored on the show. This activity is appropriate for a high school science class or an introductory level undergraduate geoscience
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