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Effetto Doppler

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ulaulaman 2020-07-05 14:02:03 +02:00
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commit c3e38427ac
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physics/effetto_doppler.tex Executable file
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\documentclass{standalone}
%
\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{xcolor}
\usepackage{fontspec}
\setmainfont{Montserrat}
%
\title{Effetto Doppler}
\begin{document}
\tikzset{
partial ellipse/.style args = {#1:#2:#3}{insert path={+ (#1:#3) arc (#1:#2:#3)}},
human/.pic = {
\draw [fill] (0,0) circle (0.3cm);
\draw [thick] (0,0) circle -- (0,-1.5);
\draw [thick] (-0.5,-1) -- (0,-0.5) -- (0.5,-1);
\draw [thick] (-0.5,-2) -- (0,-1.5) -- (0.5,-2);
},
ambulance/.pic = {
\draw [fill=red, thick] (4,0) -- (4.1,0.6) -- (4.5,0.6) -- (4.6,0) -- (4,0);
\draw [fill=white, thick] (0,0) -- (5,0) -- (6,-3) -- (6.5,-3.2) -- (6.5,-4) -- (-1,-4) -- (0,0);
\draw [fill=red, thick] (6.5,-3.7) -- (-0.92,-3.7) -- (-0.87,-3.5) -- (6.5,-3.5) -- (6.5,-3.7);
\draw [thick] (-0.12,-0.5) -- (5.17,-0.5);
\draw [fill=red, thick] (4,0) -- (4.1,0.6) -- (4.5,0.6) -- (4.6,0) -- (4,0);
\draw [fill=blue!50!white] (4,-1) -- (5.1,-1) -- (5.6,-2.5) -- (4,-2.5) -- (4,-1);
\draw [fill, thick] (5,-4) circle (0.6cm);
\draw [fill=blue!70!white, thick] (5,-4) circle (0.3cm);
\draw [fill, thick] (0,-4) circle (0.6cm);
\draw [fill=blue!70!white, thick] (0,-4) circle (0.3cm);
},
}
\begin{tikzpicture}
\node at (3.5,9.5) {\textcolor{black}{\fontsize{23}{24}\selectfont Sorgente e ricevitore}};
\node at (3.5,8.5) {\textcolor{black}{\fontsize{23}{24}\selectfont fermi}};
\draw [color=blue!50!white, ultra thick] (4.2,0.6) circle (4cm);
\draw [color=blue!50!white, ultra thick, dashed] (4.2,0.6) circle (5cm);
\draw [color=blue!50!white, ultra thick] (4.2,0.6) circle (6cm);
\draw [color=blue!50!white, ultra thick, dashed] (4.2,0.6) circle (7cm);
\pic at (0,0) {ambulance};
\begin{axis}[axis line style={draw=none}, tick style={draw=none}, yticklabels=\empty, xticklabels=\empty, xshift=6.65cm, yshift=-4cm, scale=0.8]%
\addplot[domain=-1:3,samples=50,smooth,ultra thick,gray] {cos(deg((pi+0.3)*x))};
\end{axis}
\pic at (13,-2.5) {human};
%
\begin{scope}[shift={(20,0)}]
\node at (3.5,9.5) {\textcolor{black}{\fontsize{23}{24}\selectfont Sorgente in movimento}};
\node at (3.5,8.5) {\textcolor{black}{\fontsize{23}{24}\selectfont ricevitore fermo}};
\draw [color=blue!50!white, ultra thick] (4.2,0.6) circle (4cm);
\draw [color=blue!50!white, ultra thick, dashed] (3.7,0.6) circle (5cm);
\draw [color=blue!50!white, ultra thick] (3.2,0.6) circle (6cm);
\draw [color=blue!50!white, ultra thick, dashed] (2.7,0.6) circle (7cm);
\pic at (0,0) {ambulance};
\begin{axis}[axis line style={draw=none}, tick style={draw=none}, yticklabels=\empty, xticklabels=\empty, xshift=6.65cm, yshift=-4cm, scale=0.8]%
\addplot[domain=0:2,samples=50,smooth,ultra thick,blue] {cos(deg((2*pi)*x))};
\end{axis}
\begin{axis}[axis line style={draw=none}, tick style={draw=none}, yticklabels=\empty, xticklabels=\empty, xshift=-6cm, yshift=-4cm, scale=0.8]%
\addplot[domain=0:2,samples=50,smooth,ultra thick,red] {cos(deg((3/2 * pi)*x))};
\end{axis}
\pic at (13,-2.5) {human};
\end{scope}
%
\end{tikzpicture}
\end{document}

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physics/pdf/effetto_doppler.pdf Normal file
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