Byr4b14
So, an amplitude goes up and down. In all the example photos, the amplitudes in the minus and plus ranges (cm) were the same length. So, for example, 3cm at the top and -3cm at the bottom. But could it be that the top is 3cm and the bottom is, for example, -2cm?
In my physics homework it says: Draw two oscillations in the diagram that have the same frequency (2Hz) but an amplitude of 4cm and 0.5cm.
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First the term amplitude relates to both half waves. If an amplitude is 4cm and another 0.5, then it is 2 different signals.
Example, amplitude 6cm can be +3cm and – 3cm. However, it can also be the same proportion of + 1cm or also – 1cm. In such a case, the zero passages are displaced by the constant component.
In tube technology, the alternating voltage is decoupled with the aid of capacitors.
Sure. You can shift rine trigonometric function, for example, a sine on the Y axis. That’s not a problem.
In the alternating current, that means that we have a “equivalent proportion”.
Source:
https://de.m.wikipedia.org/wiki/Amplitude#:~:text=Amplitude%20is%20A%20Other%20Currency%20%Cber%20of20Time.
Since, according to this definition, the amplitude is the maximum deflection from the arithmetic mean value, it cannot be that at the top 3 cm and at the bottom -2 cm, but the maximum deflections are always the same, i.e., for example, the y coordinate of the maximum deflection: at the top 3 and at the bottom -3
So in your case two vibrations once 4 cm up and 4 cm down and the other time 0.5 cm up and 0.5 cm down
if positive and negative amplitude components were really different, then there would be non-differentiable points (in short terms: bends in the curve) at the zero crossings. If, on the other hand, a constant value is superimposed, then the entire curve is displaced only in the Y direction, but still symmetrical. The zero point of an oscillation is always in the middle between the extrema, not necessarily at the zero point of the selected coordinate system.
A (sine) shaft can be displaced from the zero line into the positive or negative range when it is superimposed by a DC voltage.
That’s how I learned it in my training.
The amplitude corresponds to the time value of an oscillation. She’s never the same.
Source:
https://de.m.wikipedia.org/wiki/Amplitude#:~:text=Amplitude%20is%20A%20Other%20Currency%20%Cber%20of20Time.
A wave has an amplitude.
You shall draw two waves, one with one, and one with the other amplitude.