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Nouvelles sur l’optique, la lumière,

la technologie d’analyse optique et plus

NIR spectroscopy applied to meat

NIR spectroscopy applied to meat

Meat and meat products are an important source of protein, vitamins and minerals in the human diet. Therefore, quality control is one of the essential stages in their processing. Spectroscopy has emerged as an alternative to conventional quality study methods thanks to its speed, simplicity and ability to detect internal attributes. This post will address the applications of spectroscopy for the study of quality parameters in meat.

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NIR spectroscopy applied to fruits and vegetables

Near infrared spectroscopy (NIR), which covers approximately 780 to 2500 nm, has many applications in the fruit and vegetables industry, and can be used to measure moisture, soluble solids content, water content, stiffness or presence of internal damage, among other parameters. In this post, the use of NIR spectroscopy for the measurement of different attributes in fruits and vegetables is reviewed.

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NIR spectroscopy applied to the wine industry

NIR spectroscopy applied to the wine industry

Wine industry requires cheap, effective and fast measurement methods, which have led to the use of near infrared (NIR) spectroscopy as a technique for measuring quality parameters throughout the production process of this industry, from grapes to wine. Currently, the main application of NIR spectroscopy in the wine industry is associated to the measurement of alcohol. However, NIR technology offers much more possibilities, as it is detailed in this post.

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Hyperspectral and multispectral imaging

Hyperspectral imaging (HSI) and multispectral imaging (MSI) are optical spectroscopy imaging techniques. They have gained importance in the last years in the world of spectroscopy, but do you really know in what they consist? In this post, we will define them, explain the different types of acquisition systems that are employed and describe their main elements, as well as mentioning their applications.

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Michelson interferometer diagram

Fiber optic interferometers

Fiber optic interferometers are employed to measure different physical magnitudes such as temperature, strain, pressure or refractive index. In this post we will explain the basics of interferometry and the different types of existing interferometers: Michelson, Fabry-Perot, Sagnac, Mach-Zehnder, Moiré, the modal interferometer and white light interferometry.

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The speed of light controversy

In this post we will briefly explain the historical evolution in determining the speed of light (c) and the different scientists that played a role in it, from when it was considered that the speed of light was infinite to when its value was accurately calculated and standardized.

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Why is the sky blue?

The question in the title may seem trivial, as it is a question that sooner or later, almost every kid asks. However, the answer is not so straightforward and the work of several scientists was needed in order to give an adequate response. In this post, we will shed light on one of the questions that has troubled parents through generations.

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Fiber optic gas sensors

A lot of effort has been dedicated during the past decades to the detection of gaseous species. Precise and rapid detection of minute gas concentrations

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Nanoparticles Matter

It is several decades since the speech given by Dr. Feynmann at Caltech in 1959 where he pointed out the possibilities of nanotechology [1]. Since

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