diff --git a/infographics/luna/distanza_luna.tex b/infographics/luna/distanza_luna.tex new file mode 100644 index 0000000..bbe3676 --- /dev/null +++ b/infographics/luna/distanza_luna.tex @@ -0,0 +1,182 @@ +\documentclass{standalone} +% +\usepackage{tikz} +\usetikzlibrary{backgrounds,shapes.callouts} +\tikzstyle directed=[postaction={decorate,decoration={markings, mark=at position .5 with {\arrow{>}}}}] +\usepackage{tkz-euclide} +\usepackage{xcolor} +\usepackage{ifthen} +% +\definecolor{space}{HTML}{1F2C4E} +\definecolor{earth}{HTML}{0089FA} +\definecolor{dida}{HTML}{FFDE00} +\definecolor{title}{HTML}{FBA706} +\definecolor{moon}{HTML}{AFAFAF} +\definecolor{craterm}{HTML}{616060} +\definecolor{linem}{HTML}{DBDBDB} +\definecolor{core2}{HTML}{FF9616} +\definecolor{mars}{HTML}{DC7B4E} +% +\usepackage{fontspec} +\setmainfont{Open Dyslexic} +% +\title{Storia della misura della distanza Terra-Luna} +\begin{document} + \tikzset{ + partial ellipse/.style args = {#1:#2:#3}{insert path={+ (#1:#3) arc (#1:#2:#3)}}, + notice/.style = { draw, ellipse callout, callout relative pointer={#1} }, + } + \begin{tikzpicture}[background rectangle/.style={fill=white},show background rectangle,>={[inset=0,angle'=27]Stealth}] + \draw [use as bounding box, color=white] (-0.1,2.7) -| (30.2,2.7) |- (30.2,-118) -| (-0.1,-118); + %title + \begin{scope}%[shift={(0,15)}] + \draw [black,ultra thick,fill=title] (0,-2.5) rectangle (30,2.5); + \node (example-textwidth-2) [right, align=center, text width=35cm, color=black, font=\fontsize{60pt}{61pt}\selectfont] at (-3,0) {Storia della misura della distanza Terra-Luna}; + \end{scope} + % + \begin{scope}[shift={(0,-7.5)}] + \node at (23,0) {\includegraphics[width=5cm]{carl_sagan}}; + \node (example-textwidth-2) [notice={(3,0.5)}, ultra thick, right, align=center, text width=12cm, color=black, fill=white, font=\fontsize{23pt}{24pt}\selectfont] at (1,-1) {I metodi più antichi sono quello dell'eclissi lunare, come fatto da \textbf{Aristarco di Samo} nel IV secolo a.C. e successivamente da \textbf{Ipparco da Samo}. Quest'ultimo ottenne un risultato compreso tra i 376000 e i 427000 km.}; + \end{scope} + % + \begin{scope}[shift={(0,-17.5)}] + \node at (7,0) {\includegraphics[width=8cm]{ipparco}}; + \node (example-textwidth-2) [notice={(-3,0.5)}, ultra thick, right, align=center, text width=12cm, color=black, fill=white, font=\fontsize{23pt}{24pt}\selectfont] at (12,-1) {Purtroppo commisi alcuni errori, tanto che la misura che doveva essere una stima inferiore di tale distanza risultò maggiore rispetto a quella che doveva essere la stima superiore...}; + \end{scope} + % + \begin{scope}[shift={(0,-26)}] + \node at (23,0) {\includegraphics[width=5cm]{carl_sagan}}; + \node (example-textwidth-2) [notice={(3,0.5)}, ultra thick, right, align=center, text width=12cm, color=black, fill=white, font=\fontsize{23pt}{24pt}\selectfont] at (1,-1) {\textbf{Tolomeo}, a partire dai risultati di Ipparco, determinò una distanza di 409000 km.}; + \end{scope} + % + \begin{scope}[shift={(0,-34)}] + \node at (7,0) {\includegraphics[width=8cm]{tolomeo}}; + \node (example-textwidth-2) [notice={(-3,0.5)}, ultra thick, right, align=center, text width=12cm, color=black, fill=white, font=\fontsize{23pt}{24pt}\selectfont] at (12,-1) {Qualunque errore ho fatto dipende da Ipparco!}; + \node (example-textwidth-2) [notice={(3,0.5)}, ultra thick, right, align=center, text width=12cm, color=black, fill=white, font=\fontsize{23pt}{24pt}\selectfont] at (12,-4) {Tolomeo! Sempre modesto, eh?!}; + \end{scope} + % + \begin{scope}[shift={(0,-42)}] + \draw [ultra thick, fill=dida] (2.5,1.5) rectangle (28,-1.5); + \node (example-textwidth-2) [right, align=left, text width=25cm, color=black, font=\fontsize{18pt}{19pt}\selectfont] at (3,0) {Il metodo più antico in assoluto è invece quello della parallasse, ovvero la misurazione simultanea da posizioni differenti dell'angolo tra la Luna e un dato punto di riferimento. }; + \end{scope} + % + \begin{scope}[shift={(0,-47)}] + \node at (23,0) {\includegraphics[width=5cm]{carl_sagan}}; + \node (example-textwidth-2) [notice={(3,0.5)}, ultra thick, right, align=center, text width=12cm, color=black, fill=white, font=\fontsize{23pt}{24pt}\selectfont] at (1,-1) {Ovviamente in questo modo risulta necessario sincronizzare tutti gli osservatori.}; + \end{scope} + % + \begin{scope}[shift={(0,-53.5)}] + \draw [ultra thick, fill=dida] (2.5,2) rectangle (28,-2); + \node (example-textwidth-2) [right, align=left, text width=24cm, color=black, font=\fontsize{18pt}{19pt}\selectfont] at (3,0) {Il metodo attualmente utilizzato risale al 1962, quando una squadra del MIT (\emph{Massachusetts Institute of Technology}) in collaborazione con gli astronomi sovietici dell'Osservatorio Astrofisico di Crimea portò a termine un esperimento per misurare il tempo di andata e ritorno di un impulso laser riflesso sulla superficie della Luna.}; + \end{scope} + % + \begin{scope}[shift={(0,-61)}] + \draw[color=craterm, fill=moon, ultra thick] (6.5,0) circle (4.5cm); + \foreach \x in {1,...,5} + \draw [color=craterm, ultra thick, rotate around={72*\x:(6.5,0)}] (6.5,0) -- (6.5,2); + \foreach \x in {1,3,...,20} + \draw [color=craterm, ultra thick, rotate around={18*\x:(6.5,0)}] (6.5,0) -- (6.5,1.2); + \foreach \x in {2,6,...,18} + \draw [color=craterm, ultra thick, rotate around={18*\x:(6.5,0)}] (6.5,0) -- (6.5,0.9); + \draw[fill=craterm, ultra thick] (6.5,0) circle (0.5cm); + %down-sx + \draw (3.3,-2.5) [rotate around={-45:(3.3,-2.5)}, color=linem,ultra thick,partial ellipse=20:160:1.5 and 0.5]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (3.3+\x,-2.5-\x) [rotate around={-45:(3.3,-2.5)}, color=craterm,ultra thick,partial ellipse=20:160:1.5 and 0.5]; + %down-dx + \draw (9.7,-2.5) [rotate around={45:(9.7,-2.5)}, color=linem,ultra thick,partial ellipse=20:160:1 and 0.3]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (9.7+\x,-2.5-\x) [rotate around={45:(9.7,-2.5)}, color=craterm,ultra thick,partial ellipse=20:160:1 and 0.3]; + %up-sx + \draw (3.5,3.2) [rotate around={45:(3.5,3.2)}, color=linem,ultra thick,partial ellipse=180:360:0.5 and 0.3]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (3.5+\x,3.2-\x) [rotate around={45:(3.5,3.2)}, color=craterm,ultra thick,partial ellipse=180:360:0.5 and 0.3]; + %up-dx shadow + \draw (9.5,3) [rotate around={-50:(9.5,3)}, color=linem,ultra thick,partial ellipse=180:360:0.9 and 0.7]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (9.5+\x,3-\x) [rotate around={-50:(9.5,3)}, color=craterm,ultra thick,partial ellipse=180:360:0.9 and 0.7]; + % + \draw[color=black, fill=earth, ultra thick] (20.5,-13) circle (7.2cm); + % + \draw [ultra thick, fill=space] (13.5,3) rectangle (26.5,-3); + \node (example-textwidth-2) [right, align=left, text width=12cm, color=white, font=\fontsize{18pt}{19pt}\selectfont] at (14,0) {L'evoluzione di questo esperimento viene portato a termine grazie alle \emph{missioni Apollo} del 1969, quando gli astronauti posizionarono sulla superficie lunare degli specchi catarifrangenti, in modo tale da migliorare l'accuratezza della misura.}; + % + \draw [ultra thick, fill=space] (0.5,-6.5) rectangle (13.5,-13.5); + \node (example-textwidth-2) [right, align=left, text width=12cm, color=white, font=\fontsize{18pt}{19pt}\selectfont] at (1,-10) {I laser che viaggiano verso la Luna coinvolgono molteplici strutture e fanno parte del \emph{Lunar Laser Ranging}. La misura della distanza proveniente da questo progetto è di 384402 km con un errore di 1.1 millimetri, che in termini di tempo luce corrisponde a poco meno di 1.3 secondi.}; + % + \draw [ultra thick, color=red] (8.5,-2) -- (18,-7); + \end{scope} + % + \begin{scope}[shift={(0,-84)}] + \draw [ultra thick, fill=dida] (14,5) rectangle (28,-5); + \node (example-textwidth-2) [right, align=left, text width=13cm, color=black, font=\fontsize{18pt}{19pt}\selectfont] at (14.5,0) {Un metodo alternativo basato sullo stesso principio è quello di usare degli impulsi radar: nel 1957 lo \emph{US Naval Research Laboratory}, dopo aver inviato un segnale sulla superficie della Luna, ha rivelato quello di ritorno e misurato il tempo di ritardo, usato per ricavare la distanza dal nostro satellite. Purtroppo tale esperimento era soggetto a un errore eccessivamente alto e quindi il risultato prodotto non era considerato affidabile.}; + \draw [ultra thick, fill=earth!50!white] (1,-6) rectangle (29,-10); + \node (example-textwidth-2) [right, align=left, text width=18cm, color=black, font=\fontsize{18pt}{19pt}\selectfont] at (10,-8) {L'esperimento venne ripetuto l'anno dopo, nel 1958, dal \emph{Royal Radar Establishment} in Gran Bretagna. La sintesi dei due risultati ha prodotto una misura pari a 384402 ± 1,2 km.}; + \end{scope} + % + \begin{scope}[shift={(5,-84)},scale=0.8] + \begin{scope} + \draw [fill=linem] (0,-11) [partial ellipse=180:360:4 and 0.8] -- (4,-11) -- (4,-9) -- (-4,-9) -- (-4,-11); + \draw [fill=linem] (0,-9) [partial ellipse=0:360:4 and 0.8]; + \draw [fill=moon] (0,-9) [partial ellipse=180:360:3 and 0.5] -- (3,-9) -- (0,4) -- (-3,-9); + \end{scope} + % + \begin{scope}[rotate around={-40:(0,0)}] + \draw [fill=linem] (-3.5,1) -- (-2,-0.5) -- (2,-0.5) -- (3.5,1) -- (-3.5,1); + \draw [fill=craterm] (0,0) circle (0.2 cm); + \draw [fill=moon] (0,4.5) [partial ellipse=180:360:7.5 and 4]; + \draw [fill=linem](0,4.5) [partial ellipse=0:360:7.5 and 1]; + \draw [fill=craterm] (0,3.5) [partial ellipse=0:180:0.5 and 0.2]; + \draw [color=moon, line width=0.2 cm] (-4.5,4) -- (-0.4,9); + \draw [color=moon, line width=0.2 cm] (4.5,4) -- (0.4,9); + % + \draw [fill=craterm] (0,9) [partial ellipse=180:360:0.5 and 0.2] -- (0.5,9) -- (0.5,10.5) -- (-0.5,10.5) -- (-0.5,9); + \draw [fill=craterm] (0,10.5) [partial ellipse=0:360:0.5 and 0.2]; + \end{scope} + \end{scope} + % + \begin{scope}[shift={(0,-100)}] + \draw [ultra thick, fill=space] (1,-2) rectangle (29,2); + \node (example-textwidth-2) [right, align=left, text width=15cm, color=white, font=\fontsize{18pt}{19pt}\selectfont] at (2,0) {Un altro sistema, meno preciso dei due precedenti, è quello delle occultazioni, ovvero quando la Luna passa davanti a una stella o a un pianeta.}; + \begin{scope}[shift={(15,0)}] + \draw[color=black, fill=mars, ultra thick] (2.7,2.5) circle (0.2cm); + \draw[color=craterm, fill=moon, ultra thick] (6.5,0) circle (4.5cm); + \foreach \x in {1,...,5} + \draw [color=craterm, ultra thick, rotate around={72*\x:(6.5,0)}] (6.5,0) -- (6.5,2); + \foreach \x in {1,3,...,20} + \draw [color=craterm, ultra thick, rotate around={18*\x:(6.5,0)}] (6.5,0) -- (6.5,1.2); + \foreach \x in {2,6,...,18} + \draw [color=craterm, ultra thick, rotate around={18*\x:(6.5,0)}] (6.5,0) -- (6.5,0.9); + \draw[fill=craterm, ultra thick] (6.5,0) circle (0.5cm); + %down-sx + \draw (3.3,-2.5) [rotate around={-45:(3.3,-2.5)}, color=linem,ultra thick,partial ellipse=20:160:1.5 and 0.5]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (3.3+\x,-2.5-\x) [rotate around={-45:(3.3,-2.5)}, color=craterm,ultra thick,partial ellipse=20:160:1.5 and 0.5]; + %down-dx + \draw (9.7,-2.5) [rotate around={45:(9.7,-2.5)}, color=linem,ultra thick,partial ellipse=20:160:1 and 0.3]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (9.7+\x,-2.5-\x) [rotate around={45:(9.7,-2.5)}, color=craterm,ultra thick,partial ellipse=20:160:1 and 0.3]; + %up-sx + \draw (3.5,3.2) [rotate around={45:(3.5,3.2)}, color=linem,ultra thick,partial ellipse=180:360:0.5 and 0.3]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (3.5+\x,3.2-\x) [rotate around={45:(3.5,3.2)}, color=craterm,ultra thick,partial ellipse=180:360:0.5 and 0.3]; + %up-dx shadow + \draw (9.5,3) [rotate around={-50:(9.5,3)}, color=linem,ultra thick,partial ellipse=180:360:0.9 and 0.7]; + \foreach \x in {0.01,0.02,...,0.1} + \draw (9.5+\x,3-\x) [rotate around={-50:(9.5,3)}, color=craterm,ultra thick,partial ellipse=180:360:0.9 and 0.7]; + \end{scope} + % + \end{scope} + % + \begin{scope}[shift={(0,-110)}] + \node at (4,0) {\includegraphics[width=5cm]{carl_sagan}}; + \node (example-textwidth-2) [notice={(-3,0.5)}, ultra thick, right, align=center, text width=12cm, color=black, fill=white, font=\fontsize{23pt}{24pt}\selectfont] at (9,-1) {Con questo metodo gli astronomi \textbf{John O'Keefe} e \textbf{Pamelia Anderson} calcolarono nel 1952 un valore di 384407.6 ± 4.7 km. Questo risultato venne migliorato nel 1962 da \textbf{Irene Fischer} che ottenne un valore di 384403.7 ± 2 km.}; + \end{scope} + % + \begin{scope}[shift={(0,-117)}] + \node at (27,0) () {\includegraphics[width=3.7cm]{licenza}}; + \node at (18,-0.1) {\textcolor{black}{\fontsize{14}{15}\selectfont Testo e illustrazioni: @ulaulaman - Gianluigi Filippelli}}; + \end{scope} + \end{tikzpicture} +% +\end{document} diff --git a/infographics/luna/pdf/distanza_luna.pdf b/infographics/luna/pdf/distanza_luna.pdf new file mode 100644 index 0000000..7d94819 Binary files /dev/null and b/infographics/luna/pdf/distanza_luna.pdf differ