How cicadas make their noise
Article Abstract:
A male cicada, an insect specie, creates a noise frequency of 4.3 kilohertz as brief, loud clicks emerge from its buckling ribs. Buckling of its four ribs results when the insect's two tymbal muscles contract alternately at 120 hertz apiece. Noise is generated mainly to attract mates.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1998
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Detecting massive neutrinos
Article Abstract:
The Super Kamiokande neutrino detector is an array of light-sensitive detectors that probes the center of 50,000 tons of water where protons may decay or struck by neutrinos. Super Kamiokande is located inside an active zinc mine inside Mount Ikenoyama in Japan.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1999
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