Category Archives: IJAA

International Journal of Astronomy and Astrophysics

Partial Frequencies and Chladni’s Law in Church Bells

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Author(s) :William A. Hibbert, David B. Sharp, Shahram Taherzadeh, Robert Perrin   The rim partials of a church bell (those with an antinode at the soundbow) generate the strike pitch or perceived note of the bell. The spacing in frequency of the higher rim … Continue reading

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Isli and Tislit: The First Dual Impact Crater Discovered in Morocco

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After a few months of studies, a group of geologists from the Ibn Zohr University concludes that strange lakes, well known in the region Imilchil (Morocco) are the remains of a double impact crater done by a falling meteorite dating … Continue reading

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Asymmetry of Sunspot Distribution – What Does this Mean? Is there any Relation to Global Worming?

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The solar activity features on the solar disk are not identical in the northern or the southern solar hemispheres. This North-South asymmetry (ANS) is considered to be a new index to tracing the nature of solar activity and the solar … Continue reading

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Black Holes Are Only Half of Their Previously Predicted Size

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First discovered in 1971, Black Holes, as predicted by Einstein’s general relativity are regions in the space-time where the gravitation field is so intense that even light cannot escape it. The theory of general relativity predicts that a sufficiently compact mass will deform space-time … Continue reading

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