In Bild 3.4 ist die Ausbreitung der

In Bild 3.4 ist die Ausbreitung der von einer ruhenden bzw. bewegten, punktförmigen Störquelle ausgehenden Kugelwelle zu sehen, wobei die zum Zeitpunkt t=0;t=-1∆t;t=-2∆t;t=-3∆t ausgesandten Schallwellen durch Kreise gekennzeichnet sind. Dabei zeigt (a) die ruhende Störquelle. Die Signale breiten sich gleichmäßig nach allen Seiten aus. Bei (b) bewegt sich die Störquelle mit halber Schallgeschwindigkeit nach links, wodurch sich eine Verdichtung der Signale in Bewegungsrichtung ergibt. Bewegt sich die Störquelle mit Schallgeschwindigkeit, wie dies bei (c) der Fall ist, so sind vor der Störquelle keine Signale vorhanden. Man nennt dieses Gebiet deshalb auch ,,Zone des Schweigens”. Beträgt die Geschwindigkeit, mit der sich die Störquelle bewegt, z.B. die zweifache Schallgeschwindigkeit (d), so grenzt ein Kegel die,,Zone des Schweigens” ab, der auch Machscher Kegel genannt wird. Der Kegelwinkel B ist dabei durch Gl. 3.14 gegeben.

ผลลัพธ์ (อังกฤษ) 1:

In Figure 3.4 the spread of the ball stem from a stationary or moving, point-like source of interference is to see where that at time t = 0; t = 1∆t t = 2∆t; t = 3∆t emitted sound waves through circles are marked. It is the static interference source shown (a). The signals spread evenly on all sides. At (b), the source of interference with half speed of sound moves to the left, which results in a compression of signals in the direction of movement. The source of interference with sound speed moves, as this is the case with (c), no signals are present before the source of the interference. Called this area therefore, zone of silence". The speed at which the interference source moves such as the double speed of sound (d), is a cone borders the zone of silence"that is called also Machscher cone. The cone angle B is given by EQ. 3.14.

ผลลัพธ์ (อังกฤษ) 2:

In Figure 3.4, the spread of emanating from a resting or moving, point-like source of interference spherical wave can be seen, said at the time t = 0; t = -1Δt; t = -2Δt; t = -3Δt emitted Sound waves are indicated by circles. Here, (a) shows the quiescent source of interference. The signals propagate uniformly in all directions. In (b) the interference source moves at half the speed of sound to the left, resulting in a compression of the signals in the direction of movement. Moves the source of interference with sound velocity, as is the case with (c), so no signals are present prior to the disturbance source. They call this area therefore ,, zone of silence ". If the rate at which the noise source moves, for example, twice the speed of sound (d), so narrows the cone ,, zone of silence "from which is also called the Mach cone shear. The cone angle B is given by Eq. 3:14 added.

ผลลัพธ์ (อังกฤษ) 3:

In Figure 3.4 is the spread of a dormant or moving, point-shaped interference outgoing Kugelwelle to see where the time t= 0 ;t= -1T;t= -2T;t= -3∆t the emitted sound waves are indicated by circles. This shows (a) the dormant source. The signals spread evenly on all sides.(B) moves the source of interference with half sound velocity to the left, causing a compression of the signals in the movement direction. The source moves at the speed of sound, as in (c) is the case, so no signals are present in the source. This is why this area is called "zone of silence". The speed is,The interference with the moves, such as the dual sound velocity (d), a cone borders the" zone of Silence" from, which also is called Mach cone. The cone angle B is by Eq. 3.14.