2019-04-17 12:18:29 +02:00
\documentclass { standalone}
%
\usepackage { tikz}
\usetikzlibrary { backgrounds}
\usetikzlibrary { plotmarks}
\usetikzlibrary { arrows}
\usetikzlibrary { arrows.meta}
\tikzset { >={ Latex[width=5mm,length=10mm]} }
\usetikzlibrary { decorations, decorations.text}
%
\usepackage { amsmath}
\usepackage { xcolor}
\definecolor { space} { HTML} { 0A2543}
\definecolor { earth} { HTML} { 0089FA}
\definecolor { mars} { HTML} { DC7B4E}
\definecolor { dida} { HTML} { FFDE00}
\definecolor { title} { HTML} { FBA706}
\definecolor { moon} { HTML} { AFAFAF}
\definecolor { lsb} { HTML} { D8603E}
%
\usepackage { mathptmx}
\usepackage { fontspec}
\setmainfont { Montserrat}
%
\title { Eratosthenes method}
\begin { document}
\tikzset { partial ellipse/.style args = { #1:#2:#3} { insert path={ + (#1:#3) arc (#1:#2:#3)} } }
\begin { tikzpicture}
\begin { scope}
\draw [fill=space,ultra thick] (-11.2,14) -- (11.2,14) -- (11.2,-17.2) -- (-11.2,-17.2) -- (-11.2,14);
\end { scope}
\begin { scope} [shift={ (0,-1)} ]
\draw [fill=dida,ultra thick] (-8.4,15.8) -- (8.4,15.8) -- (8.4,13.2) -- (-8.4,13.2) -- (-8.4,15.8);
\node at (0,15) () { \textcolor { black} { \fontsize { 24} { 25} \selectfont Eratosthenes method for determining} } ;
\node at (0,14) () { \textcolor { black} { \fontsize { 24} { 25} \selectfont the size of the Earth} } ;
\end { scope}
\begin { scope}
%earth surface
\draw [fill=earth] (-11,1) arc(90:0:18) -- (-11,-17) -- (-11,1);
%surface label
\draw [decorate,decoration={ text along path, raise=8pt, text align=right, text={ |\fontsize { 27} { 28} \selectfont \color { white} |Earth's surface} } ] (-11,1) arc(90:0:18);
%earth center label
\draw [ultra thick] (-11,-16) arc(90:0:1);
\node at (-5,-16.5) () { \fontsize { 27} { 28} \selectfont Center of the Earth} ;
%wall
\draw [rotate around={-38:(0.18,-2.9)},ultra thick,fill=white, opacity=0.5] (0.18,-2.9) -- (0.7,-2.9) -- (0.7,-4.4) -- (0.18,-4.4) -- (0.18,-2.9);
%arrows
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\begin { scope}
2019-04-17 12:18:29 +02:00
%alexandria vertical label
\draw [decorate,decoration={ text along path, raise=6pt, text align=center, text={ |\fontsize { 24} { 25} \selectfont \color { red} |Vertical at Alexandria} } ] (-1.88,-1.48) -- (4.8,9.9);
%parallels label
\draw [shift={(-1,0.8)}] [decorate, decoration={ text along path, raise=2pt, text align=center, text={ |\fontsize { 24} { 25} \selectfont \color { blue} |Parallel ray's to the Sun} } ] (0.36,-3.05) -- (11.1,10.1);
%sun rays vertical label syene
\draw [arrows=->, color=blue, ultra thick] (0.36,-3.05) -- (11.1,10.1) node [below, midway, sloped] (TextNode) { \textcolor { red} { \fontsize { 24} { 25} \selectfont Vertical to Syene} } ;
%sun rays alexandria
\draw [arrows=->, color=blue, ultra thick, shift={(-2.24,1.57)}] (0.36,-3.05) -- (11.1,10.1);
%vertical alexandria syene
\draw [arrows=->, color=red, ultra thick] (-11,-17) -- (4.8,9.9);
\draw [arrows=->, color=red, ultra thick, rotate around={-8.75:(-11,-17)}] (-11,-17) -- (4.8,9.9);
%5000 stadia
\draw [arrows=<->,color=white, ultra thick] (-1.38,-0.58) -- (0.98,-2.35);
\draw [decorate,decoration={ text along path, raise=10pt, text align=center, text={ |\fontsize { 15} { 16} \selectfont \color { white} |stadia} } ] (-1.38,-0.58) -- (0.98,-2.35);
\draw [decorate,decoration={ text along path, raise=25pt, text align=center, text={ |\fontsize { 15} { 16} \selectfont \color { white} |5000} } ] (-1.38,-0.58) -- (0.98,-2.35);
%alexandri arrow
\draw [arrows=<-, ultra thick, color=white] (-1.88,-1.48) -- (-2.3,1.5) -- (-3,1.7) node [left] (TextNode) { \textcolor { white} { \fontsize { 21} { 22} \selectfont Alexandria} } ;
%syene arrow
\draw [arrows=<-, ultra thick, color=white] (0.36,-3.05) -- (2.3,-2) -- (3.3,-2) node [right] (TextNode) { \textcolor { white} { \fontsize { 21} { 22} \selectfont Syene (aswan) Wall} } ;
\end { scope}
%equator
\draw [-,dashed, ultra thick, rotate around={1:(0.4,-10.8)}] (0.4,-10.8) -- (4.9,-8.5) node [above, midway, sloped] (TextNode) { \textcolor { black} { \fontsize { 21} { 22} \selectfont Equator} } ;
%1/50th
\draw [ultra thick] (-8.75,-13) arc(90:63:2) node [right] (TextNode) { \textcolor { black} { \fontsize { 15} { 16} \selectfont $ \; $ 7\textdegree 12' or 1/50th of a circle} } ;
\draw [ultra thick] (0.52,2.7) arc(90:63:2);
%
\node at (-5.5,8.5) () { \textcolor { white} { \fontsize { 21} { 22} \selectfont 50 $ \cdot $ 5000 $ = $ 250000 stadia} } ;
\node at (-3.05,7.5) () { \textcolor { white} { \fontsize { 21} { 22} \selectfont $ \simeq $ 56000000 meters} } ;
\end { scope}
%
\end { tikzpicture}
%
\end { document}