The science contained in an infrared light

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Greetings reader friend, back with more science, for this occasion taking a simple control, I was struck by how infrared is, what is the important information that it can provide us as information, good as a starting point, infrared is a physical phenomenon, already which is a form of infrared radiation, which has two focuses, one of visible light and the other of non-visible light, these visions range from ultraviolet light to red light, well thanks to W Herschel, who in 1800 detected in the spectrum of solar radiation, began to give more fundamental ideas about this phenomenon, good my reader friends, another fundamental characteristic that in turn is infrared radiation, as well as fundamental data, is the simple behavior of electromagnetic radiation whose wavelength ranges from 760-780nm. As it is a spectrum with a longer wavelength than visible light, but less than that of microwaves, but it is good to know its essence, it is emitted or absorbed by molecules when they change their rotational movements and, in turn, vibrations, are produced by bodies. hot, since my friends that is due to changes in the energy states of orbital electrons in atoms, not everything is here, because they are produced by hot bodies, since at the physics level they are due to changes in the states of energy of orbital electrons in atoms, it is also thanks to the emitters.


Continuing in this order of ideas and being clear about this type of phenomenon, which can originate naturally and artificially, now the issuers of this come into discussion, since in this case artificially it is evidenced , are characteristic of IR production are non-luminous emitters, which can be refracted in such a way that they consist of arranged electrical resistances, thanks to all this over time the way to take advantage of this type of technology has evolved, it has served base to study the behavior of vibration in a molecule through a change in the dipole moment, in order to evidence the energy states for molecules of the appropriate symmetry, taking into account dear reader that the absorption and transmission of photons in the infrared range that thanks for being an electromagnetic and light spectrum. Be careful with this data to consider infrared light, this is only found in the microwave portion of the electromagnetic spectrum, that is why it has a visible and non-visible range.


Many of us wonder how far this goes, well it has been shown through experiments that infrared is classified, according to its wavelength, near, medium and far, we have as a starting point for compression of this, in such a way in wavelength to the radiation detectable by the human eye, until it is almost not visible, since it is reinforced with a physics level in reference to the wavelength, which I like is the shape of where a body emits the maximum radiation, this is inversely proportional to its temperature (Wien's Law). Well, about this law, it makes reference to us or shows us the way to analyze in evidence that the higher the temperature of a black body, the shorter the wavelength in which it emits will be, my friends make it clear to us, that in them e establishes that there is an inverse relationship between the wavelength, in which the emission peak of a black body occurs, (b) it is an absolute constant: 0.2898 cm, but it also has a temperature, where the maximum shifts at shorter wavelengths as temperature (T) increases, longer wavelength photons are less energetic.

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The use of this technology in a wide range, because in astronomy it is used in a telescope to see the celestial body, thanks to the photometric system, as well as the level of control devices and other transmissions in optical communications, part of the infrared spectrum, which is used is divided into seven bands depending on the availability of light sources, thanks to photon emitters at this level, which in turn absorb energy from this range within the fiber materials and detectors of photons, night vision lens, since it uses the mechanism of electromagnetic waves of any frequency that heat the surfaces that absorb them, detail images s thermal radiation can propagate through a vacuum, again I mention that of the controls, which they generally use infrared instead of radio waves since they do not interfere with other signals such as television signals. Besides we have another way of seeing through this light based on heat, the thermal image, that is thanks to the fact that images are created based on the differences in surface temperature by detecting infrared radiation, the microwave oven also uses this type of technology, in the field of medicine we have that the action of heat directly on the cells and the situation of hyperemia stimulate cell and tissue trophism.

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On the other hand we have another phenomenon within this context, it is the Emissivity, it even has a very singular coefficient, it is evidenced in this phenomenon in a spectral directional way, since the intensity emitted is fulfilled, by the surface in a particular direction and the intensity that would be emitted by a black body at the same temperature and wavelength, we touch the black body again, its coefficient refers to the dimensionless one that relates the ability of a real object, to put it this way it shows us how this radiate thermal energy (E). Well at first I show you an infrared control, well its technology is based on a remote signal emitter, which uses near-infrared emission diodes to emit a beam of light that reaches the device, since the receiver makes it possible for them to consists of modulating the carrier signal with signals of different frequencies, the important fact is that the infrared signal emits a sinusoidal carrier wave, modified in some of its parameters, frequency, amplitude, thanks to the fact that a particular type of diode that emits light when being crossed by an electric current, since it is known that only one LED diode, this my friend, only serves to be directly polarized, this means that it conducts current and emits light. I have noticed how interesting this topic is and all the information it shows us at the level of science and technology.

All images and gif were edited by my Samsung A23 phone


Bibliographical References


Arduino: Learning to Develop to Create Smart Objects By Nicolas GOILAV, Geoffrey LOI, 2016.


Optical methods of analysis By E D. Olsen, 2016.


Principles of Chemistry: The Paths of Discovery By Peter Atkins, Loretta Jones,2006.


Dictionary of astronomy by edited by Ian Ridpath,2004.


Introduction to materials science and engineering. II, Volume2 By William D. Callister, 1996.

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