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FluxGate Magnetometer

Fluxgate Magnetometer The fluxgate magnetometer is a device that serves for the vectorial measurement of low intensity magnetic fields. This device is relatively simple but allows to reach resolutions of the order of the nanotesla. It is widely used when high resolution is required but at the same time reliability, …

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Sound Experiments

The most obvious use for a sound card interfaced with a computer, along with a microphone and speakers, is to explore the physics of sound and the propagation of acoustic waves. The sound card and its use we have already described in the following post: Sound Card Applications. We now …

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Sound Card Applications

The Sound Card as a Tool for Analyzing Signals Modern sound cards designed for connection with a PC are sophisticated instruments that allow the acquisition in digital format (ADC conversion) of electrical signals on two channels. The standard sampling frequency is 44.1KHz (designed for an audio signal that reaches a …

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HPGe Gamma Ray Spectroscopy

Introduction to HPGe Detectors The hyperpure germanium detectors (HPGe) are the gamma radiation detectors with the best energy resolution. They are widely used in gamma spectroscopy applications even if they need to be cooled to cryogenic temperatures. We do not go into technical details but we limit to show in …

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Micod PMT Universal Amplifier

The Equipment The latest addition to the Micod family is the universal PMT preamplifier. The device, housed in a metal package, consists of a CSP followed by a buffer stage. What is striking about this device is its versatility : there is in fact the possibility of modifying the hardware …

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Fiber Optics & Sensors

The Optical Fiber Optical fibers are filaments of glassy or polymeric materials, made in such a way as to be able to carry light inside them (guided propagation), and which find important applications in telecommunications, medicine, sensors and lighting technology. Optical fibers typically include a core surrounded by a transparent cladding material with a …

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Absorption Photometry

The Absorption Photometer The absorption photometer is based on the photodiode photometer already described in the post: PSoC based Photometer. To use the photometer in absorption measurements we have prepared a cell-holder cell with two side openings. In an opening the photodiode is inserted, connected to the photometer, in the …

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DIY Optical Table

Introduction The optical table is an invaluable tool for the realization of any optical experience. In practice it is a platform used to support systems for optical experiments. In optical systems, the alignment of each component must be extremely accurate, think for example of an interferometer. Even small vibrations or …

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PSoC Based Photometer

Introduction In this post we want to describe the realization of a simple “general purpose” photometer, based on a photodiode sensor and on a Cypress PSoC5LP microcontroller. The photometer is the instrument that measures the intensity of a light emission, its applications range in many different sectors, including chemical and …

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Luminol and Chemiluminescence

Chemiluminescence Chemiluminescence is the emission of electromagnetic radiation, particularly in the visible and near infrared, which can accompany a chemical reaction. Considering a reaction between the reagents A and B to give the product P: A + B → P* → P + hν In practice, the reaction leads to the product …

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