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Alle VertiefungsthemenSchwarze Löcher, Kosmologie, Gravitationswellen - die Relativitätstheorie hat viele Facetten. Hier finden Sie eine Gesamtübersicht unserer Vertiefungsthemen, die interessante Teilaspekte von Einsteins Erbe beleuchten - grob nach Themen sortiert. Die Texte bauen nicht aufeinander auf und laden zum Stöbern ein. Günstig wäre es freilich, wenn Sie schon eine ungefähre Idee von den Grundlagen der Relativitätstheorie mitbrächten, in etwa auf dem Niveau unserer Einführung Einstein für Einsteiger. Allgemeines
The dialectic of relativityHow relativity can reconcile statements that, at first glance, appear to be contradictory Spezielle Relativitätstheorie und ZeitMehr zu Gleichzeitigkeit, Zeitdilatation und den reisenden Zwillingen The definition of "now"Why it is necessary to define simultaneity, and how best to go about defining it. Time dilation on the roadHow you can picture the relativity of simultaneity and time dilation, using a simple geometric analogy Twins on the roadHow one can picture the situation of the travelling twin, using a simple geometric analogy Energie und MasseHintergrundinformationen zur berühmtesten Formel der Physik Is the whole the sum of its parts?Why Einstein's famous formula tells us that the whole, as far as mass is concerned, is often less than the sum of its parts From E=mc² to the atomic bombThe subtle connections between Einstein's formula, nuclear fission and nuclear fusion Grundlagen
The wave nature of simple gravitational wavesA closer look at the way that simple gravitational waves propagate through space with time Gravitationswellenquellen
Chirping neutron starsFor some gravitational wave signals, one can go beyond graphs and animations - they can be made audible White Dwarf binaries as gravitational wave sourcesWhite Dwarf binaries, their properties, and the role they will play for the planned space-borne gravitational wave detector LISA. Auf dem Weg zum direkten NachweisMehr zu Gravitationswellendetektoren auf der Erde und im Weltraum Listening posts around the globeOverview of the gravitational wave detectors currently operational, or under construction Einstein@Home - gravitational waves for everybodyInformations about how you personally can help with the search for gravitational wave - by donating processing time on your private computer Catching the wave with lightSome information on how interferometric detectors such as LIGO or GEO600 work Small vibrationsSome information on how the vintage models among gravitational wave detectors work - resonant detectors LISA - Hunting waves in spaceInformation about the most ambitious gravitational wave project yet - a detector in space Schwarze Löcher aus der Nähe
The dark heart of the Milky WayInformation about the closest supermassive black hole - the central object of our own galaxy Luminous disks: How black holes light up their surroundingsHow the fact that black holes are very efficient in attracting surrounding matter leads to some of the most spectacularly luminous phenomena in the whole of the cosmos Active black holes: Ultra-hot cosmic beaconsWhat astronomers can see once a black hole has heated up its cosmic neighbourhood, stimulating it to emit bright radiation Wie man kompakte Objekte nachweistMehr zum Schwereeinfluss von Schwarzen Löchern und Neutronensternen auf ihre direkte kosmische Umgebung, von abgelenkten Sternen bis zu Akkretionsscheiben und den damit verbundenen Leuchterscheinungen - aber auch zu der Möglichkeit, sie hier auf der Erde nachzuweisen How many different kinds of black holes are there?Once they have settled down, there are actually only very few different kinds of black hole - find out which, and how black holes shed other distinguishing marks. Particle accelerators as black hole factories?The intriguing possibility that the next generation of particle accelerators might produce - and allow the detection of - miniature black holes Changing places - space and time inside a black holeHow, in one sense, space and time switch their roles inside a black hole - and why this leads to a black hole's most characteristic property, namely that nothing can get out Die Physik der Schwarzen Löcher
Descent into a black holeThe story of an expedition's closer and closer approach to a black hole - too close? HintergrundwissenNützliche physikalische Konzepte, um die Physik von Schwarzen Löchern und Neutronensternen besser zu verstehen. What figure skaters, orbiting planets and neutron stars have in commonSome information about what is called the conservation of angular momentum, and its consequences for neutron stars, black holes and the matter disks around them Heat that meets the eyeThe connection between temperature and the emission of electromagnetic radiation, as well as the consequences for stars, matter disks around black holes, and cosmology Kosmische Hintergrundstrahlung
Avoiding the big bangThe collapsing and then re-expanding quantum universe that loop quantum gravity offers as a replacement of the standard big bang models Taming infinity with loopsHow loop quantum gravity could replace the absurd state of infinite density, the big bang with which, according to Einstein's relativity, the universe began Searching for the quantum beginning of the universeAbout attempts to understand the beginning of our universe using different approaches to quantum gravity Der Ursprung der ElementeZur Entstehung leichter Atomkerne im frühen Universum. Heat that meets the eyeThe connection between temperature and the emission of electromagnetic radiation, as well as the consequences for stars, matter disks around black holes, and cosmology Relativität und QuantenZur relativistischen Quantentheorie sowie zu Stringtheorie, Schleifengravitation und anderen Ansätzen, die Einsteinsche Gravitation und Quantentheorie zusammenzubringen Grundlagen der QuantengravitationEinige Fragen zur Quantengravitation, die weitgehend unabhängig davon sind, welchen der vorhandenen Zugänge zu diesem Problem man wählt. Actors on a changing stage: quantum gravity and background independenceThe principle of background independence - space and time are no fixed structure, but take part in the dynamical evolution of the world - and its consequences for the problem of quantum gravity StringtheorieMehr zur Stringtheorie, momentan vor allem zur Frage der Extradimensionen, die in dieser Theorie eine wichtige Rolle spielen. Extra dimensions - and how to hide themWhy our universe could possess dimensions beyond length, width and depth - and why those dimensions need not be noticeable in everyday life Particle accelerators as black hole factories?The intriguing possibility that the next generation of particle accelerators might produce - and allow the detection of - miniature black holes Hunting for extra dimensionsWays of detecting extra dimensions - and why the fact that our earth orbits the sun is a relevant data point Simplicity in higher dimensionsWhy matters that seem rather complicated might be much more simple in higher dimensions Schleifen-QuantengravitationMehr zum Ansatz der Schleifen-Quantengravitation (Loop-Quantengravitation), momentan insbesondere zu ihren kosmologischen Anwendungen. Avoiding the big bangThe collapsing and then re-expanding quantum universe that loop quantum gravity offers as a replacement of the standard big bang models Taming infinity with loopsHow loop quantum gravity could replace the absurd state of infinite density, the big bang with which, according to Einstein's relativity, the universe began Weitere Ansätze zur QuantengravitationAuch jenseits von Strings und Loops gibt es Ansätze zur Zähmung des Problems der Quantengravitation. Hier werden zumindest zwei davon vorgestellt. Geometry from order: causal setsAn overview of the causal set approach to a theory of quantum gravity Searching for the quantum beginning of the universeAbout attempts to understand the beginning of our universe using different approaches to quantum gravity Physikalische GrundlagenHintergrundinformationen zur Quantentheorie The sum over all possibilities: The path integral formulation of quantum theoryAbout the path integral approach to quantum theory Document Actions |
