40 research outputs found

    Honoring and Maintaining a Dual Identity

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    My father taught at a church-affiliated college as a professor of philosophy. My mother, for much of my growing-up years, was a fifth-grade public school teacher. Although I was shaped by both of these models, and attracted to each, I initially came down on the side of elementary teaching. For close to 10 years I worked, mostly happily, with upper-elementary children in both public and private settings. Professionally, at least, I seemed to have much more to talk about with my mother. Having subsequently completed a doctorate in the history of education (including much formal and informal study of philosophy) and having taught now for 15 years at a small Christian liberal arts college, friends often point out how much my life resembles that of my father

    The James Webb Space Telescope Mission

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    Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least 4m4m. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the 6.5m6.5m James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

    Measurements of top-quark pair differential cross-sections in the eμe\mu channel in pppp collisions at s=13\sqrt{s} = 13 TeV using the ATLAS detector

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