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is the average magnetic path length = 0.94 (constant value) m {\displaystyle m~} is the mass of the sample in kilograms If all conditions are as defined in the standard, the standard deviation of the reproducibility of the values is not greater than 1.5% up to 1.5 T [ clarification needed ] for non-oriented electrical steel and up to 1.7 T for ...
In January 1986 Testors released a model kit of a hypothetical F-19 Stealth Fighter, designed using open source intelligence [6] [7] before the real F-117 Nighthawk was introduced. Although it was very different from the actual plane, [8] video games and many other toys and models were inspired by this fictional design. Many features, such as ...
SparkFun's Inventor's Kit, v4.0 An accelerometer and magnetic compass board from SparkFun. All products designed and produced by SparkFun are released as open-source hardware (OSHW), [5] with schematics, EAGLE files, and datasheets posted on each product page. Product images are licensed under the Creative Commons BY-NC-SA 3.0 [6]
Starting in 1958, EICO produced amateur radio equipment often in kit form, such as the EICO 720 and 730 transmitters. Later in the 1960s they made the EICO 753 SSB transceiver for amateur radio use. Unfortunately problems with the 753--or seven drifty three-- damaged their reputation which led to their decline.
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However, magnetic torque magnetometry doesn't measure magnetism directly as all the previously mentioned methods do. Magnetic torque magnetometry instead measures the torque τ acting on a sample's magnetic moment μ as a result of a uniform magnetic field B, τ = μ × B. A torque is thus a measure of the sample's magnetic or shape anisotropy.
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Hall effect magnetometers (also called tesla meters or gauss meters) use a Hall probe [23] with a Hall element to measure magnetic fields or inspect materials (such as tubing or pipelines) using the principles of magnetic flux leakage. A Hall probe is a device that uses a calibrated Hall effect sensor to directly measure the strength of a ...