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Measuring the Density of Small Samples
Rockhounds, prospectors and ordinary folks notice with some curiosity when then pick up a rock that is heavier or lighter than expected, i.e., a sample with usual density. These often make there way to the home of the collector. Prospectors for centuries have recognized that a high density hints at a high metal content. Density…
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Experiments with Temperature, Data Logger and the Sun
Some of the simplest temperature sensors that can be used with the Data Logger are the LM35 and other members of the family. The LM35 is a three-terminal device in a TO-92 package and it is very inexpensive. Connections are straight forward, one to ground, one to V+ and one for temperature out. The LM35…
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General Measurement Considerations
Measurements Measurements of all kinds are the core of good science. Like anything else good measurements lead to good science. There are a few fundamentals which should be kept in mind when measurements are performed. Prime Directive: The measurement should not change the system under investigation. Prospective: Keep the accuracy of the measurements within the…
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Preface
The general purpose of these web pages is to share some of the work I have done in various areas of science. I want to share in the spirit of C.L. Stong’s “Amateur Scientist” column in Scientific American. In other words, provide interesting topics, typically in the form of experiments, provide an interesting experimental…