Tackling the triple point
Article Abstract:
Calibrating a thermometer need no longer be expensive. Amateur scientist George Schmermund has designed a triple point cell which requires less than $50 to construct. The triple point is 0.01 deg C and is that point where water can exist as gas, liquid and solid in equilibrium.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Detecting micron-sized movements
Article Abstract:
A simple detector developed by University of Nevada biologist John R.B. Lighton can detect movements as tiny as a half micron. Miniscule magnets attached to the sources of motion are picked up by a sensor which detects magnetic field variations.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Detecting natural electromagnetic waves
Article Abstract:
Many scientists believe that low-frequency electromagnetic waves are predictors of earthquake activity. Instructions are provided for building a wave detector which consists of a copper antenna radio, tuned in at 0.1 - 20 hertz frequency.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Shading the twinkle. A new eye opens on the Cosmos
- Abstracts: Learning to love NDT. Chicago's micropile debut. What lies beneath?
- Abstracts: Reducing risks. Dispensing chemists. Finishing lines
- Abstracts: A fast method for recycling fly ash: microwave-assisted zeolite synthesis. Effect of deicing salts on metal and organic matter mobilization in roadside soils
- Abstracts: Evaluating toxic impact assessment methods: what works best? Steady-state bovine tissue biotransfer factors