From 9248e1b412136d41d2ad7b302f682bfcc05e5174 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=BCller?= <andreas.mueller@ost.ch>
Date: Sun, 11 Apr 2021 09:07:21 +0200
Subject: phasen

---
 vorlesungen/slides/7/symmetrien.tex | 64 ++++++++++++++++++++++---------------
 1 file changed, 38 insertions(+), 26 deletions(-)

(limited to 'vorlesungen/slides/7/symmetrien.tex')

diff --git a/vorlesungen/slides/7/symmetrien.tex b/vorlesungen/slides/7/symmetrien.tex
index 79f9ef7..35d62d8 100644
--- a/vorlesungen/slides/7/symmetrien.tex
+++ b/vorlesungen/slides/7/symmetrien.tex
@@ -14,7 +14,7 @@
 \begin{column}{0.48\textwidth}
 \begin{block}{Diskrete Symmetrien}
 \begin{itemize}
-\item
+\item<2->
 Ebenen-Spiegelung:
 \[
 {\tiny
@@ -22,12 +22,13 @@ Ebenen-Spiegelung:
 }
 \mapsto
 {\tiny
-\begin{pmatrix*}[r]-x_1\\x_2\\x_3 \end{pmatrix*},
+\begin{pmatrix*}[r]-x_1\\x_2\\x_3 \end{pmatrix*}
 }
-\;
+\uncover<4->{\!,\;
 \vec{x}
 \mapsto
 \vec{x} -2 (\vec{n}\cdot\vec{x}) \vec{n}
+}
 \]
 \vspace{-10pt}
 \begin{center}
@@ -41,34 +42,39 @@ Ebenen-Spiegelung:
 \coordinate (C) at ({90+\a}:{\r*cos(90+\a-\b)});
 \coordinate (N) at (\a:2);
 \coordinate (D) at (\a:{\r*cos(\b-\a)});
+\uncover<3->{
 \clip (-2.5,-0.45) rectangle (2.5,1.95);
 
-\fill[color=darkgreen!20] (O) -- ({\a-90}:0.2) arc ({\a-90}:\a:0.2) -- cycle;
-\draw[->,color=darkgreen] (O) -- (N);
-\node[color=darkgreen] at (N) [above] {$\vec{n}$};
+	\fill[color=darkgreen!20] (O) -- ({\a-90}:0.2) arc ({\a-90}:\a:0.2)
+		-- cycle;
+	\draw[->,color=darkgreen] (O) -- (N);
+	\node[color=darkgreen] at (N) [above] {$\vec{n}$};
 
 
-\fill[color=blue!20] (C) -- ($(C)+(\a:0.2)$) arc (\a:{90+\a}:0.2) -- cycle;
-\fill[color=red] (O) circle[radius=0.06];
-\draw[color=red] ({\a-90}:2) -- ({\a+90}:2);
-\fill[color=blue] (C) circle[radius=0.06];
-\draw[color=blue,line width=0.1pt] (A) -- (D);
-\node[color=darkgreen] at (D) [below,rotate=\a] {$(\vec{n}\cdot\vec{x})\vec{n}$};
-\draw[color=blue,line width=0.5pt] (A)--(B);
+	\fill[color=blue!20] (C) -- ($(C)+(\a:0.2)$) arc (\a:{90+\a}:0.2)
+		-- cycle;
+	\fill[color=red] (O) circle[radius=0.06];
+	\draw[color=red] ({\a-90}:2) -- ({\a+90}:2);
+	\fill[color=blue] (C) circle[radius=0.06];
+	\draw[color=blue,line width=0.1pt] (A) -- (D);
+	\node[color=darkgreen] at (D) [below,rotate=\a]
+		{$(\vec{n}\cdot\vec{x})\vec{n}$};
+	\draw[color=blue,line width=0.5pt] (A)--(B);
 
-\node[color=blue] at (A) [above right] {$\vec{x}$};
-\node[color=blue] at (B) [above left] {$\vec{x}'$};
+	\node[color=blue] at (A) [above right] {$\vec{x}$};
+	\node[color=blue] at (B) [above left] {$\vec{x}'$};
 
-\node[color=red] at (O) [below left] {$O$};
+	\node[color=red] at (O) [below left] {$O$};
 
-\draw[->,color=blue,shorten <= 0.06cm] (O) -- (A);
-\draw[->,color=blue,shorten <= 0.06cm] (O) -- (B);
+	\draw[->,color=blue,shorten <= 0.06cm,line width=1.4pt] (O) -- (A);
+	\draw[->,color=blue,shorten <= 0.06cm,line width=1.4pt] (O) -- (B);
+}
 
 \end{tikzpicture}
 \end{center}
 \vspace{-5pt}
 $\vec{n}$ ein Einheitsnormalenvektor auf der Ebene, $|\vec{n}|=1$
-\item
+\item<5->
 Punkt-Spiegelung:
 \[
 {\tiny
@@ -84,13 +90,15 @@ Punkt-Spiegelung:
 \end{block}
 \end{column}
 \begin{column}{0.48\textwidth}
+\uncover<6->{%
 \begin{block}{Kontinuierliche Symmetrien}
 \begin{itemize}
-\item Translation:
+\item<7-> Translation:
 \(
 \vec{x} \mapsto \vec{x} + \vec{t}
 \)
-\item Drehung:
+\item<8-> Drehung:
+\vspace{-3pt}
 \begin{center}
 \begin{tikzpicture}[>=latex,thick]
 \def\a{25}
@@ -103,14 +111,15 @@ Punkt-Spiegelung:
 \fill[color=blue!20] (O) -- (90:\r) arc (90:{90+\a}:\r) -- cycle;
 \node at ({0.5*\a}:1) {$\alpha$};
 \node at ({90+0.5*\a}:1) {$\alpha$};
-\draw[->,color=blue] (O) -- (\a:2);
-\draw[->,color=darkgreen] (O) -- ({90+\a}:2);
+\draw[->,color=blue,line width=1.4pt] (O) -- (\a:2);
+\draw[->,color=darkgreen,line width=1.4pt] (O) -- ({90+\a}:2);
 \end{scope}
 \draw[->] (-1.1,0) -- (2.3,0) coordinate[label={$x$}];
 \draw[->] (0,-0.1) -- (0,2.3) coordinate[label={right:$y$}];
 \end{tikzpicture}
 \end{center}
 \[
+\uncover<9->{%
 \begin{pmatrix}x\\y\end{pmatrix}
 \mapsto
 \begin{pmatrix}
@@ -118,15 +127,18 @@ Punkt-Spiegelung:
 {\color{blue}\sin\alpha}&{\color{darkgreen}\phantom{-}\cos\alpha}
 \end{pmatrix}
 \begin{pmatrix}x\\y\end{pmatrix}
+}
 \]
 \end{itemize}
-\end{block}
+\end{block}}
 \vspace{-10pt}
+\uncover<10->{%
 \begin{block}{Definition}
 Längen/Winkel bleiben erhalten
 \\
-$\Rightarrow$ $\exists$ Erhaltungsgrösse
-\end{block}
+\uncover<11->{%
+$\Rightarrow$ $\exists$ Erhaltungsgrösse}
+\end{block}}
 \end{column}
 \end{columns}
 \end{frame}
-- 
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