Black light

on 12 May 2017.

Diffraction, that is, the deviation of the rays from a straight path when passing near the edges of the screen, can yield unexpected findings.


So look for the diffraction ring from the hole in the screen.


So look diffraction bands, if the hole is a narrow slit.

Explanation of alternating black and white stripes give: 1)Huygens ' principle - each point on the wave front is a source of waves; 2) the law of interference waves coming to one point from different sources interfere.

Fresnel proposed method of calculating the position of the black and white areas. (Now these zones are called Fresnel zones).

Now imagine that we slightly moved the screen to the received image. Zones will not disappear, they slightly expand. Again pushed the screen area has increased. That is, zones represent a certain conical surface, the apex of which is a hole in the screen (the light source).




Now imagine that we chose one black zone and released it outside the demo screen. The rest of the image does not pass through the screen.


So, we have a black ray, we know for sure that it is. But we do not see its manifestation.


The beam does not leave any marks on the photo paper.


It does not interact with the photocell (no current).


Black bands can also be obtained by interference from several holes or slits. But here you can find out that the rays that formed in this place, giving a black bar on the screen, did not displease each other! Because after pushing the screen (or removing the sources), you can see that after interference in a given dark band, the rays exit and in the future can interact with other rays to form light bands.


"Suppose such a" black light "falls on the photodiode. With one direction of the electric radiation vector in the photodiode circuit, there will be no current, and with the other, a current will flow. However, the transition of the pn must be set perpendicular to the direction of the electric vector. Now one layer of semiconductor is under another - you need another element. (It is doubtful: even such a sensitive reaction as the disintegration of silver bromide does not feel black light).


- Divide our beam into two parts and force them to pass different paths, and then fold again. Since there will be an infinite number of mismatches, the ray must become visible.


Let us pass through a substance in a powerful magnetic or electric field. The environment is asymmetric, so the phase mismatch must occur and the beam will become visible.


-In anisotropic media, in crystals, in mixtures of various materials with respect to refraction, there must be a mismatch.

 If the black light is difficult to think of an application, then the black radio wave somehow immediately finds application in radar. And this radar, which can not fix enemy funds. After reflection from the enemy aircraft, there will be a mismatch, a take-off of the phases of the waves. The black radio wave will turn into the ordinary one. And this reflected (normal!) Radio signal can receive a passive receiver. The impression is that if the aircraft itself emits a radio wave, it becomes a source of radiation, and the pilot can not detect the radar.


Intuitively, it can be assumed that the black radio wave has a greater permeability than the usual one. Indeed, a conventional radio wave displaces electrons (if a conductor is on the way) or shakes atoms and molecules (in a dielectric), this takes energy away. This has an attenuating, damping effect on the wave. In the black radio wave, the amplitudes are opposite, so no effect is produced. But since there is nothing ideal, and many substances are anisotropic, then after a run in some matter some phase difference, a change in angles, a mismatch is formed. The black radio wave becomes ordinary, which can be fixed by available means.


You can "see" black light with interference. If from two sources separated by a certain distance two beams arrive at a given point and mutually cancel, then in the future they again diverge and manifest themselves in full.


In radio communication, the zones of silence have long been well studied. The absence of reception of a signal does not mean the disappearance of a wave. Just at this point, there are two oscillations of the inverse amplitudes, which will certainly manifest themselves in other conditions.


The large penetrating ability of black light can allow to show through details, structures, biological objects. (Replace the X-ray with a flashlight?)


You can try to use a black radio wave for closed communication, for detecting defects in metal products, and translucent depths.


We are used to treating a radio wave in space: in the air, in the environment, in space. Meanwhile, the best medium for radio wave propagation is a conductor. A significant, significant discovery, in the author's opinion, will be the transfer of huge energy through wires of a scanty section. Two high-frequency oscillations that lag behind one another for half a wave will pass along the conductor without any external effects: heating, magnetic field, interaction with other wires.


And how else can you get black light and a black radio wave?


Suppose we have a beam of plane polarized light or a radio wave. We divide it into two parts and force one part to fall behind the other on the floor of the wave, and then fold it again. There will be a visible redemption of the beam. But this does not mean that there are no rays in this place of space! Simply at this point, the amplitudes were opposite. If the rays met at some angle, and then again parted again, then each ray will manifest itself again.


Simple light sources or radio wave generators and can not closely compare with the quality of radiation with lasers and masers. Only on such devices can we ensure strict monochromaticity and coherence of radiation. And the effects there will be stunning.


A black laser beam of enormous power: what is it? Invisible to us, but under certain conditions suddenly exploding in space - this is a miracle! And, most likely, the piercing substance is like a neutrino, carrying energy that can not be measured by ordinary methods, not damped in matter! Perhaps this is a universal tool for sensing, energy transfer and communication. Light guides, through which a black ray is passed, can become not only a means of transmitting information, but also a means of transferring energy.


The properties of black radiation have not been studied at all. Who knows how much black radiation is in the universe and how does it behave?


Wonderful finds await the researchers!