1,721,669 research outputs found
Directed Technical Change and the British Industrial Revolution
No full textFiles reproduce the simulations in the paper. Run DTC_CD_Normalized_Baseline_scr.m to reproduce the baseline simulation. Run DTC_CD_Normalized_Counterfactual_scr.m adjusting parameters as detailed in the file to reproduce the counterfactual simulations
The Energy of the Sun: The Discovery of Atoms and Nuclei
No full textThis lesson, authored and curated by David Stern, covers the generation of the Sun's energy through nuclear fusion, as well as some ideas about the evolution of stars like the Sun and their ultimate collapse, leading in some cases to supernova explosions. The section also acquaints the student with some fundamentals of nuclear physics. In addition, the lesson plan contains a supplemental section, which is a historical introduction to the emergence of our ideas on atoms, nuclei and their constituents
Close Up of the Aurora
No full textThese web pages, authored and curated by David Stern, provide an introduction to the aurora and the physical mechanisms that cause it. They include details about auroral imaging, particularly from satellites, and the fields that give rise to the charge motion that causes the aurora. This is part of a larger web site, "The Exploration of the Earth's Magnetosphere." Translations in Spanish and French are available
The Sun
No full textThis web page, authored and curated by David Stern, provides an introduction to the Sun and some properties of the solar atmosphere. Discussed briefly are sun spots, the corona, and the solar wind. Links to much more extensive discussions of these topics are provided as part of a large web site "The Exploration of the Earth's Magnetosphere". A Spanish translation is available
Exploring Earthspace
No full textThis web page, authored and curated by David Stern, discusses the interaction of the solar wind with the Earth's magnetosphere. The magnetopause is discussed at length, including the processes involved in the interaction and satellite explorations of the region in space. The page is broken down by first discussing the magnetopause, then its processes, the Earth's magnetic trail and concluding with a piece of solar wind monitoring. This is part of a large web site on Exploring the Earth's Magnetosphere. A Spanish translation is available
Magnetospheres and the Universe
No full textThis web site, authored and curated by David Stern, provides an outline regarding magnetospheres in the solar system, and the interaction with energetic particles from a number of sources. Links are given to more detailed descriptions of magnetospheres and sources of radiation. Historical information is also provided. This is part of a larger web site on "The Earth's Magnetosphere." Spanish and French translations are available
Magnetism
No full textThis site, created and curated by David Stern, presents the basic ideas of magnetism and applies these ideas to the earth's magnetic field. There are several useful diagrams and pictures interspersed throughout this lesson, as well as links to more detailed subjects. This is an introduction to a larger collection on exploring the Earth's magnetosphere. A Spanish translation is available
The Dynamic Magnetosphere
No full textThis web page, authored and curated by David Stern, provides information on disturbances in the earth's magnetosphere. Topics covered include magnetic storms, magnetic substorms, electric currents in space, dynamos, and plasmas. Included are useful summaries of all these items and links to a more expanded articles on the topics. This is a part of a larger web site, "The Exploration of the Earth's Magnetosphere." A useful glossary along with Spanish and partial French translations are also available
Radiation Belts
No full textThis website, authored and curated by David Stern, provides an outline of the motion of charged particles in the Earth's magnetic fields, and the Van Allen and outer radiation belts. It summarizes their discovery, their properties and their physics, as well as providing links to background materials and additional information. This is part of a large web site on the Exploration of the Earth's Magnetosphere. The page also includes a helpful timeline and glossary to help contextualize some of the information available. A Spanish translation is available
- …
