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"Radioactivity History."
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Who was Marie Curie?
\"Born in Warsaw, Poland on November 7, 1867, Marie Curie was forbidden to attend the male-only University of Warsaw, so she enrolled at the Sorbonne in Paris to study physics and mathematics. There she met a professor named Pierre Curie, and the two soon married, forming one of the most famous scientific partnerships in history. Together they discovered two elements and won a Nobel Prize in 1903. (Marie later won another Nobel for chemistry in 1911.) She died in Savoy, France, on July 4, 1934, a victim of many years of exposure to toxic radiation.\"-- Provided by publisher.
Book
Radioactivity : introduction and history
Radioactivity: Introduction and History provides an introduction to radioactivity from natural and artificial sources on earth and radiation of cosmic origins. This book answers many questions for the student, teacher, and practitioner as to the origins, properties, detection and measurement, and applications of radioactivity. Written at a level that most students and teachers can appreciate, it includes many calculations that students and teachers may use in class work. Radioactivity: Introduction and History also serves as a refresher for experienced practitioners who use radioactive sources in his or her field of work. Also included are historical accounts of the lives and major achievements of many famous pioneers and Nobel Laureates who have contributed to our knowledge of the science of radioactivity. * Provides entry-level overview of every form of radioactivity including natural and artificial sources, and radiation of cosmic origin.* Includes many solved problems to practical questions concerning nuclear radiation and its interaction with matter * Historical accounts of the major achievements of pioneers and Nobel Laureates, who have contributed to our current knowledge of radioactivity
eBook
A nuclear winter's tale : science and politics in the 1980s
The rise and fall of the concept of nuclear winter, played out in research activity, public relations, and Reagan-era politics.The nuclear winter phenomenon burst upon the public's consciousness in 1983.
eBook
Devotion to Their Science
A Devotion to Their Science includes biographical essays on twenty-three women who worked in atomic science during the first two decades of the twentieth century, including Marie Curie, Lise Meitner, Irène Joliot-Curie, and a host of lesser-known women scientists whose life stories have never before been told. The biographies highlight the lives and work of these women, noting their contributions and the challenges they faced and overcame. Taken together the essays record their collective experiences, highlighting the support network that developed among them and the reasons women were more predominant in this field than in other sciences in the early part of this century.
eBook
I am Marie Curie
\"A biography of Marie Curie, the physicist and chemist who was the first woman to win the Nobel Prize.\"-- Provided by publisher.
BOOK
Suffering made real
The atomic bombs dropped on Hiroshima and Nagasaki in August of 1945 unleashed a force as mysterious as it was deadly—radioactivity. In 1946, the United States government created the Atomic Bomb Casualty Commission (ABCC) to serve as a permanent agency in Japan with the official mission of studying the medical effects of radiation on the survivors. The next ten years saw the ABCC's most intensive research on the genetic effects of radiation, and up until 1974 the ABCC scientists published papers on the effects of radiation on aging, life span, fertility, and disease. Suffering Made Real is the first comprehensive history of the ABCC's research on how radiation affected the survivors of the atomic bomb. Arguing that Cold War politics and cultural values fundamentally shaped the work of the ABCC, M. Susan Lindee tells the compelling story of a project that raised disturbing questions about the ethical implications of using human subjects in scientific research. How did the politics of the emerging Cold War affect the scientists' biomedical research and findings? How did the ABCC document and publicly present the effects of radiation? Why did the ABCC refuse to provide medical treatment to the survivors? Through a detailed examination of ABCC policies, archival materials, the minutes of committee meetings, newspaper accounts, and interviews with ABCC scientists, Lindee explores how political and cultural interests were reflected in the day-to-day operations of this controversial research program. Set against a period of conflicting views of nuclear weapons and nuclear power, Suffering Made Real follows the course of a politically charged research program and reveals in detail how politics and cultural values can shape the conduct, results, and uses of science.
eBook
Slowly fading super-luminous supernovae that are not pair-instability explosions
Observations of two slow-to-fade super-luminous supernovae are reported; both show relatively fast rise times and blue colours, which are incompatible with pair-instability models.
Magnetar-powered super-luminous supernovae
Observations of two recently discovered slow-to-fade super-luminous supernovae, known as PTF12dam and PS1-11ap, reveal relatively fast rise times and blue colours that are incompatible with the pair-instability mechanism, hitherto believed to be the best explanation for superluminous events. The authors suggest a model in which the debris from these remarkably energetic supernovae is powered by magnetic neutron stars or magnetars.
Super-luminous supernovae
1
,
2
,
3
,
4
that radiate more than 10
44
ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1–4. Some evolve slowly, resembling models of ‘pair-instability’ supernovae
5
,
6
. Such models involve stars with original masses 140–260 times that of the Sun that now have carbon–oxygen cores of 65–130 solar masses. In these stars, the photons that prevent gravitational collapse are converted to electron–positron pairs, causing rapid contraction and thermonuclear explosions. Many solar masses of
56
Ni are synthesized; this isotope decays to
56
Fe via
56
Co, powering bright light curves
7
,
8
. Such massive progenitors are expected to have formed from metal-poor gas in the early Universe
9
. Recently, supernova 2007bi in a galaxy at redshift 0.127 (about 12 billion years after the Big Bang) with a metallicity one-third that of the Sun was observed to look like a fading pair-instability supernova
1
,
10
. Here we report observations of two slow-to-fade super-luminous supernovae that show relatively fast rise times and blue colours, which are incompatible with pair-instability models. Their late-time light-curve and spectral similarities to supernova 2007bi call the nature of that event into question. Our early spectra closely resemble typical fast-declining super-luminous supernovae
2
,
11
,
12
, which are not powered by radioactivity. Modelling our observations with 10–16 solar masses of magnetar-energized
13
,
14
ejecta demonstrates the possibility of a common explosion mechanism. The lack of unambiguous nearby pair-instability events suggests that their local rate of occurrence is less than 6 × 10
−6
times that of the core-collapse rate.
Journal Article