ONERA has developed the EMIR technology, which makes it possible to obtain instant images revealing the intensity of electromagneticwaves... The EMIR images make it possible to know the amount of electromagnetic energy carried by waves and their direction of emission
This is an original quasi-optical device, designed to divert a beam which is electromagnetic and not light, for example X- band radio waves... Experimental assembly for the study of the deviation of an electromagneticwave by a plasma lens... This is an original quasi-optical device, designed to divert a beam which is electromagnetic and not light, for example X- band radio waves
Radars detect and even identify aircraft at a long distance, because the latter reflect some of the electromagneticwaves received... Maxwell's equations, which describe the behavior of electromagneticwaves and in particular their reflection, show that a plane behaves like a set of antennas of the size of the radar beam wavelength
The experiment corresponding to the preceding image in which we placed films (one conducting, the other one magnetic) the heating of which is recorded by an infra-red camera, for a TEM[ Transverse electromagnetic] wave. The Emir principle (Electromagnetic and Infra-red) is simple: an electromagneticwave interacts with the conducting objects and heats them: this is the Joule effect
In an environment overloaded with electromagneticwaves, checking the electromagnetic compatibility of systems is a major issue... So the maximum power of the electromagneticwave is a hundred to a thousand times higher... Here it has been adapted for electromagneticwaves
The mission of the Optics and Associated Techniques Department (DOTA) is to conduct studies and research linked to the use of the optical domain (electromagneticwaves between the medium ultraviolet (200 nm) and the THz range (1 THz~ 300 m)). These studies are conducted primarily for the benefit of the fields of Aeronautics, Space and Defence, but also for other fields such as security, the environment, astronomy and medical imaging
The measurement technique used is based on the interaction of the electromagneticwave emitted by the on-board antenna with the ligneous mass of the forest (wood). This technique depolarizes the electromagneticwave and this effect is all the greater the denser the forest
An interferometer is a measuring instrument that exploits the interference phenomena due to electromagneticwaves, to light in particular. Among its many applications, it can be used to accurately measure and separate the wavelengths of the light it receives
Surface plasmons (in pink and blue) are electromagneticwaves created on the surface of a metal. These plasmons can make the transmission of photons easier due to resonance phenomena (in pink)
Lidar works on the same principle as radar, but instead of using large-wavelength electromagneticwaves (radar waves), it uses light. A laser emits an intense luminous wave
