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Direct linkHarvey, Alex – European Journal of Physics, 2009
The recently observed acceleration of the expansion of the universe is a topic of intense interest. The favoured causes are the "cosmological constant" or "dark energy". The former, which appears in the Einstein equations as the term [lambda]g[subscript [mu]v], provides an extremely simple, well-defined mechanism for the acceleration. However,…
Descriptors: Energy, Science Instruction, Physics, Equations (Mathematics)
Download full textSimonson, Michael, Ed.; Crawford, Margaret, Ed. – Association for Educational Communications and Technology, 2005
For the twenty-eighth year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the National AECT Convention in Orlando, Florida. The Proceedings of AECT's Convention are published in two…
Descriptors: Research and Development, Communications, Computer Uses in Education, Word Problems (Mathematics)
