Pure Derivation Of The Exact Fine Structure Constant As A Ratio Of Two Inexact Metric Constants

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Theorists at the Strings Conference in July of 2000 were asked what mysteries remain to be revealed in the 21st century. Participants were invited to help formulate the ten most important unsolved problems in fundamental physics, which were finally selected and ranked by a distinguished panel of David Gross, Edward Witten and Michael Duff. No […]


Pagers How Do They Work

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How do those beeping things work that people carry around on their belts? There are several types of pagers but, basically, it’s all done by good, old- fashioned radio waves. Someone sends you a text message with a touch-tone phone – or it can also be sent by email – and the message is forwarded […]