Shchukin proposes to Henri Matisse to paint a large painting that could serve as a decoration for the staircase of his mansion.

The power flow is accordingly halved. 1909 March 4, 1909 S. And nothing else. In some cases, under a width of 2θ 0 means the angle between directions (closest to the direction of maximum) along which the field strength is zero. I. It is here that you understand the whole genius of Matisse.

To compare directional antennas, the parameter is introduced – Directional Action Factor (CDI). Shchukin proposes to Henri Matisse to paint a large painting that could serve as a decoration for the staircase of his mansion. After all, it is always harder to simplify complex things. Directional action coefficient D — This is a number that shows how many times the radiation power of the antenna would have to be increased when switching from a directional antenna to a non-directional one, provided that the same field strength at the receiving site was maintained (all other things being equal): 1909 March 16, 1909 C. It is much easier to complicate the simple. where P ΣO — the radiation power of an omnidirectional antenna; P Σ — the radiation power of the directional antenna. I. I hope I haven’t confused you.

The directional coefficient of the receiving antenna shows what increase in the transmitter power is equivalent to the excess of the signal over the interference level given by the directional antenna (in comparison with the reception to an omnidirectional antenna), provided that the interference is evenly distributed in all directions. Shchukin receives from Henri Matisse two sketches of future paintings. Compare Matisse and Rubens.

The directivity coefficient for real antennas reaches values ​​from one to several thousand. One of them reproduces the first version of the panel «Dance» (Museum of Modern Art, New York), other – the plot of the later painting «Girls by the river» (Art Institute, Chicago). And to even better understand the idea of ​​Matisse, imagine if the characters had faces, clothes. It shows the power gain that can be obtained by using a directional antenna, but does not take into account the potential losses in it..

Shchukin hesitates. On March 28, he telegraphed the artist, annulling his previous reservations regarding the content and suggesting a plot for the second panel «Music». Trees, bushes would grow on the ground.

Figure 4.3. 1909 In early July, Henri Matisse moves from the center of Paris, where the first version was written «Dance», to the suburb of Issy-les-Moulineaux, It was there that they will be written by order of C. Birds flew in the sky. Receiving antenna radiation patterns. I. For example, like Rubens.

The effective antenna area A characterizes the surface area from which the receiving antenna collects energy, and is defined as the ratio of the maximum power that can be delivered by the receiving antenna (without losses) to the matched load, to the power ∏ , per unit area in an incident (not distorted antenna) plane wave: Shchukin’s panel «Dance» and «Music». Peter Paul Rubens. Where ∏ numerically equal to the modulus of the Poyting vector. 1910 From October 1 to November 8, 1910 Henri Matisse exhibits his paired panels at the Salon d’Automne in Paris «Dance» and «Music» (No. 536, 537), made by order C.

Deixe um comentário

O seu endereço de e-mail não será publicado. Campos obrigatórios são marcados com *