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omega tau - English only

Markus Voelter, Nora Ludewig

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How do scientists uncover phenomena and explain their connections? How do engineers design machines, methods and infrastructure? At omega tau, experts give detailed answers. Over the last ten years, we have produced over 350 episodes in which we dug deeper, until we ran out of questions. Join us on our journey through the world of science and engineering: the closer you look and listen, the more interesting things get.
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Host: Nora Ludewig Shownoter: Jochen Spalding Gast: Etienne Benson I wanted to make an episode on a topic from the history of science for a long time, finally it happened. This is an interview with Etienne Benson, professor of the history of science and technology, on the history of how people of the western world have been seeing, studying and exp…
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Guest: Antoine van Gent Host: Markus Völter Shownoter: Pascal Becker In July I visited the Airbus Helicopters factory in Donauwörth and spent time with Antoine van Gent, the Head of Development Flight and Ground testing for Germany. We talked about the helicopter flight testing process, some of the cultural aspects, the collaboration between pilots…
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Gast: David Keith Host: Markus Völter Shownoter: Alexander Grote The root cause of global warming is that more and more of the energy supplied by the sun is captured by the atmosphere because of increased amounts of CO2 and other climate gases. One way of fixing this is to make sure that more of that energy is reflected and never even penetrates th…
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Gast: Marco Calviani Host: Markus Völter Shownoter: Kolja Dummann The beam dump is a large graphite block used to take up the energy stored in the LHC beam in case the beam needs to be shut down. Since the energy in the beam can be as high as the kinetic energy of a landing 747-400, designing and operating the dump is challenging. In this episode, …
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Guests: Jerry Deren, Nick Anderson Host: Markus Voelter Shownoter: Bastian Hundt It’s been 377 episodes and we have not yet dedicated one to the F-18. This changes now. In the episode we first talk with Jerry Deren, a former US Navy Hornet pilot who also flew with the Blue Angels; we cover both aspects of his career. In part two we chat with Nick A…
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Guest: Dan “Animal” Javorsek Host: Markus Voelter Shownoter: Bastian Hundt The main part of this episode is about flying the F-22 Raptor, the most modern air superiority fighter in the inventory of the USAF. Our guest is Dan Javorsek, callsign Animal, who has previously flown the Raptor in operational test. Dan has also been the initiator of the Al…
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Guest: Paulo Iscold Host: Markus Voelter Shownoter: Kolja Dummann In this episode I talk with Paulo Iscold, a professor or aeronautical engineering at Cal Poly about Nixus Nixus, his most recent project. Nixus is one of the most fascinating and ground-breaking research efforts in the space of gliding. It uses advanced manufacturing techniques to su…
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Guest: Gareth Law, Heini Reijonen, Sophie Haapalehto Host: Markus Voelter Shownoter: Pascal Becker In this episode we cover the final storage of nuclear waste in underground facilities. We start out with a conversation about the basic process and the chemistry and physics of nuclear waste with Gareth Law, a professor of radiochemistry at the univer…
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Guest: Jens Trabolt Host: Markus Voelter Shownoter: Tim Jurik Image Credit for the Air-to-Air Foto: @JacekSiminski and @DawidKamizela, DefensePhoto.com My guest Jens and I have two things in common: we both fly gliders, and we both got to fly in an F-16. Which is why we form the Viper Gliding Club :-) Jens is a Danish journalist and got to fly with…
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Guest: Valerie Domcke Host: Markus Voelter Shownoter: Andy Joiner A while ago we had a whole series about LHC, ATLAS and particle physics in general. Despite all we know about what our world is made of and the explanatory power of the standard model, there is also a variety of open questions and currently unexplained phenomena. These include dark m…
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Guest: Jacopo Buongiorno Host: Markus Voelter Shownoter: Andy Joiner In this episode we take a look at newer generations of fission reactors, those that are currently being developed or researched. Our guest is Jacopo Buongiorno of MIT. We discuss some of the high-level goals of these new reactors, such as increased safety and efficiency, and then …
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Guests: Andrew Emerson, Daniel Jacobson Host: Markus Voelter Shownoter: Andy Joiner In this episode we look at how supercomputers are used to help with managing the pandemic. It’s a double-header with two guests. We start with Cineca‘s Andrew Emerson. As part of the EXSCALATE 4 COV EU-funded research project, he works of virtual screening of existi…
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Guests: Toby Ord Host: Markus Voelter Shownoter: Jochen Spalding Humanity has always been exposed to potentially catastrophic risks that might endanger the continued existence of humanity. Asteroid impacts or supervolcano eruptions come to mind. But since about the invention of the atomic bomb, humanity has been able to wipe itself out, adding self…
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Guests: Frank Berghaus Host: Markus Voelter Shownoter: Bastian Hundt To conclude our detailed look at the ATLAS experiment, this episode looks at the computing infrastructure. We start out with the trigger systems that decide, very quickly, whether the data from a particular collision is worth keeping. We then discuss the reconstruction of the even…
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Guests: Philipp Windischhofer Host: Markus Voelter Shownoter: Andy Joiner After understanding the history and development of ATLAS (and covering the LHC and particle physics in general) in previous episodes, we are now at the point where we can try to understand how a scientist uses the data produced by one of these large detectors and make sense o…
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Guests: Peter Jenni Host: Markus Voelter Shownoter: Alexander Grote ATLAS is one of the two general-purpose experiments at the LHC. It has been conceived, designed, and built over decades by hundreds of scientists and engineers from dozens of countries and hundreds of organizations. My guest, Peter Jenni, has been the head of the ATLAS collaboratio…
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Guests: Tucker Hamilton Host: Markus Voelter Shownoter: Thomas Machowinski The Lockheed F-35 Lightning II is going to be more or less what the F-16 and F-18 are today: the backbone of the US and NATO land and sea-based air forces. It is a multi-role fighter, and one of its versions has the capability to take off with a very short roll and land vert…
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Guests: Kimon L. H. Ioannides, Junad Chowdhury Host: Markus Voelter, Nora Ludewig Shownoter: Jochen Spalding In light of the current situation, we have decided to record a couple of episodes that cover some of the relevant background in terms of biology, medicine and healthcare. In this first episode we discuss emergency care and intensive care wit…
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Guest: Edda Gschwendtner Host: Markus Voelter Shownoter: Fabian Zeisberger A major component of particle accelerators like the LHC are the actual accelerators; the current approach relies on radio frequency cavities. However, their acceleration gradient, measured in Volts per meter, is limited. This means that future accelerators, especially linear…
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Hosts: Markus Voelter, Nora Ludewig Over the last two years, Markus wrote a book about some of the repeated topic covered on omega tau: SOFIA, Enterprise, Aerospace, Gravitational Waves, Telescopes, Models and Particle Physics. The book, called Once You Start Asking is now available as an ebook, with the softcover edition forthcoming. In this episo…
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Guest: Thomas Pfrommer Host: Markus Voelter Shownoter: Pascal Becker Six years ago, in episode 150, Jochen Liske of ESO told us about the Extremely Large Telescope that is currently being built in Chile. This episode is a continuation (which is why this is a kind of bonus episode labelled as 150.5) in which Thomas Pfrommer tells us about how to con…
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Guests: Nick Pirnia, Okie Nance, the Heatblur development team Host: Markus Voelter Shownoter: Alexander Grote The F-14 Tomcat is one of the most iconic fighters, certainly among its generation. In this episode we talk with Nick Pirnia about the aircraft’s development and history as well as about flying it with former pilot Okie Nance. The aircraft…
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Guests: Friederike Otto Host: Markus Voelter Shownoter: Thomas Machowinski An important consequence of the warming of the planet due to climate change is that the frequency and/or severity of extreme weather events will increase. But how can we tell whether a particular event can be attributed to the changing climate? Would it have happened in “nor…
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Guests: Jean-François Clervoy, Eric Delesalle, Hervé Normand, Nicolas Barbotin Host: Markus Voelter Shownoter: Andy Joiner When I was in Bordeaux with the DLR to report about their science campaign in September, I also talked to the team from AirZeroG/Novespace about the technical and aviation aspects of parabolic flights. These interviews are in t…
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Guests: Marija “Maz” Jovanovich Host: Markus Voelter Shownoter: Bastian Hundt Marija Jovanovich is a pilot for the Royal Australian Air Force where she has been flying the P-3 Orion. We discuss the aircraft, the missions, and some anecdotes. Marija then also attended the USAF Experimental Test Pilot School, and we talk a bit about the experience of…
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Guests: Hilda Carr, Peter Bauer, Tony McNally Host: Markus Voelter Shownoter: Thomas Machowinski Earlier this year I visited the European Center for Medium-Range Weather Forecasts, a European organization that produces global weather forecasts and performs research on how to improve those. The episode has three parts. First, Hilda Carr gives us an …
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Guest: Adam Spink Host: Markus Voelter Shownoter: Andy Joiner In July I visited the NATS tower at Heathrow Airport to interview my guest Adam Spink. We chatted about some of the mechanics of air traffic control at Heathrow and the unique ways of optimizing throughput. A few days later we met again on the tower of Fairford during RIAT 2019 and chatt…
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Guest: Maja Göpel Host: Markus Voelter Shownoter: Markus Voelter I am interested in societal change: how can a complex society with lots of emergent (perhaps unintended) behaviors make a conscious change, such as transitioning to a more sustainable economy? We discussed this from an engineering perspective in the episode on Modeling Socio-Technical…
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Guest: Heino Falcke Host: Markus Voelter Shownoter: Kolja Dummann A few months ago, a collaboration called the Event Horizon Telescope presented the first direct image of a black hole; or more specifically, of the radiation created by accelerated particles at its event horizon. The EHT is a Very Large Baseline Interferometer, in which radio telesco…
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Guest: Jason Markzon, Jafet Ojeda Host: Markus Voelter Shownoter: Bastian Hundt, Jochen Spalding In June 2019 I had the pleasure and honor to fly in an F-16D with the USAF Thunderbirds. The episode covers the medical briefing about how to prevent motion sickness and how to deal with Gs, suiting up with flight suit, g-suit, harness, helmet and mask,…
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Guest: Despina Hatzifotiadou Host: Markus Voelter Shownoter: Kolja Dummann In May I visited ALICE, one of the four large experiments at the LHC and talked with Despina Hatzifotiadou. We briefly discussed the science that ALICE is interested in, and then spent the majority of the time dissecting the detector to understand its components and how they…
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Guests: Igor Nikolic Host: Markus Voelter Shownoter: Mario Winkler Socio-technical systems are systems where (groups of) humans interact with (non-trivial) technical systems; an example is the power grid. The people, the technical system and the combination might easily lead to complex behavior that is hard to predict and control over the long term…
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Guests: Neil Jeffers, Adam Spink Host: Markus Voelter Shownoter: Bastian Hundt Earlier this year I visited the London Air Ambulance, a charity organization that flies two MD-902 helicopters over the UK’s capital. I chatted with their chief pilot Neil Jeffers about the flying and some of the medical aspects. My recorder then joined Neil on a short f…
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Guest: Ralf Kleiber, Matthias Hirsch Host: Markus Voelter Shownoter: Alexander Grote In our never-ending quest to understand fusion and its potential use in energy production, I visited the Wendelstein 7-X fusion experiment in Greifswald run by the Max-Planck-Institut für Plasmaphysik. We started out with a visit to the experiment hall, while exper…
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Guest: Sean Brady Host: Markus Voelter Shownoter: Stefaan Rillaert In this episode I chat with Sean Brady about structural failures in civil engineering. We first discuss the technical and organzational causes for such failures. We then look at Sean’s specialty, forensic engineering, which is about analyzing failures to determine the root cause. Se…
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Guest: Robert Hopkins Host: Markus Voelter Shownoter: Bastian Hundt Throughout the cold war, and til today, the Cobra-codenamed ground, sea and air assets have been used by the US to monitor Soviet/Russian ICBM missile launches and warhead reentries. The air component consists of the RC-135 Cobra Ball/Eye aircraft. Flying from Shemya in the Aleutia…
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Gast: Hans-Joachim Wagner Host: Nora Ludewig Shownoter: Jochen Spalding Hans-Joachim Wagner war der erste Nicht-Mediziner, der in Deutschland einen Lehrstuhl für Anatomie innehatte. Er ist Biologe und erforscht seit Jahrzehnten Tiefseefische, insbesondere ihre Sensorik. In unserem Gespräch erfahre ich viel über den fast unendlichen Lebensraum Tiefs…
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Guest: Jason Parisi, Justin Ball Host: Markus Voelter Shownoter: Stefaan Rillaert Justin and Jason wrote a nice book on fusion called The Future of Fusion Energy, and this episode is based on this book. We start out by revisiting the breakthroughs that drove progress in fusion over the decades, including understanding stars, the tokamak, supercondu…
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Gast: Hansjörg Scherer Host: Markus Voelter Shownoter: Fabian Zeisberger Die SI Einheiten sind das Fundament der modernen Metrologie. Sie legen ein System von sieben grundlegenden physikalischen Größen sowie deren numerischen Werte fest. Darauf basierend werden dann andere Einheiten abgeleitet. Aktuell basieren einige Einheiten noch auf Prototypen …
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Gast: Johannes Rahm, Nils Huntemann Host: Markus Voelter Shownoter: Jochen Spalding Im November war ich in Braunschweig bei der Physikalisch-Technischen Bundesanstalt und habe mich dort mit Johannes Rahm und Nils Huntemann über die Atomuhren unterhalten die die PTB im Rahmen ihrer Aufgabe als nationales Metrologisches Institut betreibt. Wir besprec…
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Gast: Markus Braun Host: Markus Völter Shownoter: Alexander Grote Vor langer Zeit hatten wir mal eine Episode zu Quantencomputern in der es vor allem um die Hardware und die dahinterliegende Physik ging. In der aktuellen Episode geht es um die Programmierung. Unser Gast ist Markus Braun von JoS Quantum. Wir sprechen über die grundlegende Herangehen…
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Guest: Lex Augusteijn Host: Markus Voelter Shownoter: Stefaan Rillaert Have you ever wondered how the processor in your phone or computer got so much more faster than what the increase in megahertz suggests? In this episode we talk with Lex Augusteijn about superscalar processors, pipelining, speculative execution, register renaming and the like. W…
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Guest: Eduard Heindl Host: Markus Voelter Shownoter: Fabian Zeisberger With power generation in the grid becoming more diverse and decentralized, energy storage is becoming more and more important. Eduard Heindl‘s gravity storage is an approach to storing electrical energy as potential energy by lifting huge masses cut out of the ground. While this…
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Gast: Yascha Mounk Host: Markus Völter, Nora Ludewig Shownoter: Bastian Hundt In dieser Episode spreche ich mit Autor und Wissenschaftler Yascha Mounk über Populismus. Dabei konzentrieren wir uns auf die Definition des Begriffs, die Abgrenzung von Autokratie und Diktatur sowie der Bezug zur Demokratie. Eine zweite Episode zu den Ursachen ist geplan…
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Guest: Caleb Marheine Host: Markus Voelter Shownoter: Alexander Grote In mid-September I drove to Illesheim Army Airfield to meet with Caleb Marheine who flies the AH-64 Apache helicopter there. We talked about the helicopter’s systems, the cockpit, aspects of flying it as well as some of the missions. My own Pictures Jon’s Pictures Introduction of…
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Gast: Sylvia Urbaniak Host: Nora Ludewig Shownoter: Kolja Dummann Im Sommer war ich am Niederrhein und habe Sylvia Urbaniak von der Greifvogelhilfe getroffen, die sich um verletzte Greifvögel und Eulen in der Region kümmert, diese gesund pflegt und wieder in die Wildbahn entlässt. Ich konnte einige der Volieren sehen und etwas über die aktuellen Pa…
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Guests: Pablo Munoz, Joe Zender, Roberto Peron, Ajako Matsuoka, Joana Oliveira, Paolo Ferri, Andreas Rudolph, Fabian Luedicke Host: Markus Voelter Shownoter: Mario Winkler On October 20, the BepiColombo started its flight to Mercury on an Ariane 5 from Kourou. I was at the launch press event at ESOC in Darmstadt to follow the launch and to record a…
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Gast: Walter Schlittenhardt Host: Nora Ludewig, Markus Völter Shownoter: Jochen Spalding In dieser Episode unterhalten wir uns über Anästhesie, und im Besondern über Narkosen. Unser Gast ist Dr. Walter Schlittenhardt, der Chefarzt der Abteilung für Anästhesie am Alb-Fils Klinikum in Geislingen. Wie sprechen über den Zustand der Narkose, Narkosemitt…
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