Taking the earth's magnetic pulse

Article Abstract:

An experiment which will measure the earth's magnetic micropulsations through the construction of a magnetometer is described. The device employs a torsion balance with fine quartz fibers with a laser pointer in which a beam will oscillate when the earth's magnetic field varies.

Research, Design and construction, Magnetic fields, Geomagnetism, Geomagnetic fields, Magnetometer, Magnetometers

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Exploring chemical bonds

Article Abstract:

Titration calorimetry, or measuring heat flowing into or out of chemical interactions, can be done with simple equipment. Two styrofoam cups contain interacting chemicals that are measured by two circuits, a sensitive thermometer and a calorimeter.

Tests, problems and exercises, Temperature measurements, Temperature measurement, Calorimetry, Chemical bonds

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Covert observations of nesting sparrows

Article Abstract:

Ophthalmologist and amateur naturalist Robert Slaughter adapted a birdhouse to allow him to observe nesting sparrows without disturbing them. He mounted the birdhouse under his deck so that he could observe them through a hole cut from above.

Innovations, Ornithological research, Bird watching, Birdhouses, Slaughter, Robert

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