Science Struck
Science Struck: What Is a Bolometer and What Is It Used For?
A bolometer is an instrument used to measure radiant energy. Learn about its history, its advantages, how it works, some different types, and its important applications.
Science Struck
Science Struck: A Layman's Guide to How a Sling Psychrometer Works
A sling psychrometer is used to measure humidity levels. Read about its history, how it works, its design, and how to use it. Includes a relative humidity table.
Other
Elms Environmental Education Center: How to Use a Clinometer
Offers instructions in how to use a clinometer, an instrument used by foresters for measuring angles in order to determine the height of a tree. The mathematics behind a clinometer is also explained.
Texas Instruments
Texas Instruments: Simple Programs to Apply Formulas
Students learn how to write simple programs to evaluate formulas in several variables for lists of data. They apply these skills to the computation of areas, volumes and surface areas of familiar geometric solids.
Other
Hellenica World: Ancient Greek Medical Inventions
Learn about various medical devices invented and used by the ancient Greeks including "a portable waterclock used to measure the pulse of patients" and a "surgical instrument, known as 'the spoon of Diokles.'"
Texas Education Agency
Texas Gateway: Sound Interference and Resonance: Standing Waves in Air Columns
By the end of this section, you will be able to define antinode, node, fundamental, overtones, and harmonics; identify instances of sound interference in everyday situations; describe how sound interference occurring inside open and...
Creative Science Centre
Creative Science Centre: Mobile Phone Absorption Wavemeter
An absorption wavemeter is a device which can make measurements on the strength of radio emissions and so this instrument is an essential item for investigating the mobile phone. In principle an absorption meter is a simple device that...