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Milky Way structure detected with the 21 cm Neutral Hydrogen Emission

Abstract : In this post we want to describe the study activity of the structure of our Galaxy made using the emission at 21 cm of neutral hydrogen, detected by the instrumentation described in the previous posts : Horn Antenna for the 21 cm Neutral-Hydrogen Line, Low-Noise SDR-Based Receiver for the …

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GNURadio Software for the 21 cm Neutral-Hydrogen Line

Abstract : After the previous posts on the horn antenna (Horn Antenna for the 21cm Neutral-Hydrogen Line) and on the receiver (Low-Noise SDR-Based Receiver for the 21cm Neutral-Hydrogen Line) in this post we briefly describe the Linux GNURadio application and its use for receiving the 21 cm emission of neutral …

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A Low-Noise SDR-Based Receiver for the 21 cm Neutral-Hydrogen Line

Abstract : after the article on the pyramidal horn antenna : Horn Antenna for the 21cm Neutral-Hydrogen Line, we now pass to describe the design, construction and analysis of the hardware system for receiving the 21cm radio-emission of neutral hydrogen. Design What we intend to create is a receiver centered on …

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Dye Laser DIY

Abstract : In this post we want to exploit the “freshly built” nitrogen laser (DIY Nitrogen TEA Laser) as a source of excitation for a dye laser. The dye laser is super-radiant and therefore can operate, under the right conditions, even without a resonant cavity. By focusing on the cuvette …

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DIY Nitrogen TEA Laser

Abstract : in the cover image the homebuilt TEA nitrogen laser in use at PhyscsOpenLab. The entire laser is ‘open air’ and is built into an aluminum / iron chassis with brass electrodes. The triggering spark gap is visible in the right side while the transverse discharge along the electrodes …

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CERN DIY Particle Detector

Abstract : in this post we describe the construction and testing of the “DIY Particle Detector” developed at the CERN S’Cool LAB. It is a detector based on the BPX61 photodiode (mainly for alpha particles) and on the BPW34 photodiode (mainly for beta particles). The detector uses easily available and …

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Ruby Crystal Fluorescence

Abstract : ruby has a red spectacular fluorescence under violet or blue-green radiations with a doublet spectrum at 692.80 and 694.30 nm, which appears as a single line. In this post we study the fluorescence of ruby ​​and in particular its lifetime. We show that interesting results can easily be …

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Mach – Zehnder Interferometer

Abstract : with the same setup used for the Michelson-Morley interferometer we made the Mach-Zehnder configuration. The purpose of this post is the description of the construction of the apparatus and its use for simple interferometry experiments. Introduction The Mach-Zehnder interferometer is a type of beam division interferometer, consisting of …

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Michelson – Morley Interferometer

Abstract : the purpose of this post is to describe the construction of a simple “amateur” Michelson-Morley interferometer. The Michelson-Morley interferometer has a place of absolute importance in the history of physics, having been used in the famous experiments carried out to demonstrate the existence of the ether. It is …

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KVANT Radiation Detector

Abstract : in this post we examine a solid state radiation detector. It is a silicon structure that follows the PIN diode scheme and is optimized for the detection of gamma radiation. After a brief introduction on the PIN structure technology, we go on to describe the front-end electronics used …

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DataLogging with ESP32 Module

Abstract : in this Post we show an example of the use of the ESP32 module (with the ESP-WROOM-32 development board) for the remote acquisition of an analog signal. The ESP32 module natively offers support for WiFi and a series of GPIO, both digital and analog, also boasts a very …

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VLF Receiver for SID Monitoring

Abstract : in this post we present a system for monitoring sudden ionospheric disturbances (SID) events. As is well known, SID events are caused by the impact with the ionosphere of solar radiation emitted during solar flares. Monitoring SID events is therefore an indirect way to monitor solar activity. SID …

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