Browsing All Posts published on »November, 2008«

Aspects of Quantum Measurement

November 28, 2008

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In the mathematical formalism of quantum theory, there are two levels that are important to keep clearly distinct: 1) observables/operators and 2) outcomes/eigenstates. At the first level, one observable is selected by the experimenter from among various observables. At the second level, the measurement of a selected observable is actually performed and an outcome is […]

Pseudo-problems in Physics

November 25, 2008

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Most problems in physics are genuine problems with interesting solutions. There are a few problems, though, that are described as problems of physics, but are actually pseudo-problems. They arise from a fundamental misunderstanding about the nature of theories. One such problem arises as the explanatory gap between the abstract description of the world by a […]

A Moving Image of Eternity

November 24, 2008

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What is the nature of time? In our contemporary culture, this is considered a question for physics to answer. In Einstein’s general relativity, time (as well as space) are relative and dynamic, depending on gravity and mass. Time is part of the nature of the physical world. In the Timaeus, Plato also expresses a view […]