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Atomic Physics in the Era of Control: What every physicist should know about the 2012 Physics Nobel Prize
Wes Campbell University of California, Los Angeles
PIRSA:1308004213/14 PSI - Student Presentations - 4
PIRSA:1308003913/14 PSI - Student Presentations - 3
PIRSA:1308003813/14 PSI - Student Presentations - 2
PIRSA:13080037The impact of the Atmosphere on space-bound Vehicles
PIRSA:13080046CAM 2013 - Introduction
PIRSA:1308005813/14 PSI - Student Presentations - 1
PIRSA:1308003613/14 PSI- Complex Analysis - Lecture 2
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:13080007
3D Digital Holographic Interferometry: Applications in Biomedicine
PIRSA:13080047Digital Holographic Interferometry (DHI) plays an important role in the evaluation of object static and dynamic displacements. The state of the art research on this technique is such that it is being used to solve problems in a wide variety of disciplines, from basic Physics to engineering and even social sciences. This invited plenary talk will deal with specific applications in some biomedical objects, even showing preliminary results using Electron Holography.Atomic Physics in the Era of Control: What every physicist should know about the 2012 Physics Nobel Prize
Wes Campbell University of California, Los Angeles
PIRSA:13080042To say that atomic, molecular, and optical (AMO) physics underwent a revival in the 80s and 90s is to acknowledge that it was in need of reviving. Prior to this rebirth, high-quality research was being done in many labs, but it was primarily passive with respect to atomic motion. The demonstration of laser cooling in 1978 ushered in a new era where the full quantum states (internal and external) of atoms would be precisely controlled in the following decades. This control has essentially given today’s AMO physicist the power to “realize the gedanken” and build experiments that exploit quantum mechanics to perform computations, simulations, and measurements with tremendous speed and precision. I will discuss some of the current challenges and potential of this exciting time in the field of AMO physics through the lens of a case study of some of the work of this year’s Nobel Laureates, Dave Wineland and Serge Haroche.13/14 PSI - Student Presentations - 4
PIRSA:1308003913/14 PSI - Student Presentations - 3
PIRSA:1308003813/14 PSI - Student Presentations - 2
PIRSA:13080037The impact of the Atmosphere on space-bound Vehicles
PIRSA:13080046When rockets and space-bound vehicles are fired into space, they have to deal with turbulence, winds and waves in the Earth's atmosphere. Different height regimes cause different problems. In the lower regions (0 to 20 km altitude), winds and turbulence are major issues, whereas above 50 km altitude, large atmospheric waves have serious importance on safe passage. Similar issues arise on re-entry. In this talk, I will discuss the ways in which these atmospheric phenomena manifest themselves, and how they are best mitigated. One example of particular significance will be the Space Shuttle Columbia disaster, for which I consulted with NASA in respect to possible atmospheric influences. I will also describe some of the instrumentation used to measure these phenomena.Impact cratering and the evolution of planetary surfaces in the solar system – The Chicxulub impact
PIRSA:13080041Impacts of asteroid and comets constitute major geologic processes shaping the surfaces and evolution of planetary bodies. Impacts produce deep transient cavities, with excavation to deep crustal levels, fragmentation, and removal of large rock volumes. Formation of complex craters involves high pressures and temperatures resulting in intense deformation, fracturing and melting. Here, we analyze the crater-forming impacts and their effects on the Earth´s climate, environment and life-support systems, in relation to the Cretaceous/Paleogene (K/Pg) boundary. The boundary represents one of the major extinction events in the Phanerozoic, which affected about 75 % of species. It is marked by a clay layer globally distributed that is characterized by anomalous contents of iridium and platinum group elements, marking the occurrence of a large bolide impact. Studies have examined the age, stratigraphic correlations and composition of the boundary layer, establishing a genetic association to the Chicxulub impact in the Yucatan peninsula in the Gulf of Mexico. The Chicxulub crater is a ~200 km diameter structure with peak ring and multi-ring morphology. Impact generated a transient cavity some 20-25 km deep resulting in intense deformation and shaking, which is recorded in the breccias and debris flow deposits in the Gulf of Mexico and Caribbean Sea area. Impact was on a shallow carbonate platform and resulted in huge tsunamis and in injection of CO2 and sulfur components into the atmosphere. Effects of impacts in the environment and climate of the Earth have been intensely investigated, mainly in relation to the mass extinction, where the affectation in the evolution patterns was profound and long-lasting. Effects of the K/Pg impact on the ecosystems extended for a long period of several millions of years. The disappearance of large numbers of species including complete groups severely affected the biodiversity and ecosystem composition in the marine and continental realms.CAM 2013 - Introduction
PIRSA:1308005813/14 PSI - Student Presentations - 1
PIRSA:1308003613/14 PSI- Complex Analysis - Lecture 2
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:13080007