mirror of
https://github.com/danbulant/notes
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vault backup: 2023-11-03 12:35:28
This commit is contained in:
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7 changed files with 2010 additions and 18 deletions
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@ -12,8 +12,8 @@
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"checkpointList": [
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@ -1398,7 +1398,11 @@
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notes/.obsidian/workspace.json
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notes/.obsidian/workspace.json
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@ -85,7 +85,7 @@
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@ -102,7 +102,7 @@
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@ -149,7 +149,7 @@
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@ -235,18 +235,19 @@
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@ -264,7 +265,6 @@
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"data/Pravidelný n-úhelník 2023-10-13 12.07.37.excalidraw.md",
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"mat/Trigonometrie/Geometrie/Pravidelný n-úhelník.md",
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"eko",
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"kbb/math",
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"mat/Geometrie",
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1948
notes/data/Rovinné zrcadlo 2023-11-02 13.00.20.excalidraw.md
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1948
notes/data/Rovinné zrcadlo 2023-11-02 13.00.20.excalidraw.md
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@ -344,8 +344,10 @@ imagePrefix: 'data/'
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- [[data/Pasted image 20230613135723.png|Pasted image 20230613135723.png]]
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- [[data/Pasted image 20230613140100.png|Pasted image 20230613140100.png]]
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- [[data/Pasted image 20230613140233.png|Pasted image 20230613140233.png]]
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- [[data/Pasted image 20231102111638.png|Pasted image 20231102111638.png]]
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- [[data/Pravidelný n-úhelník 2023-10-13 12.07.37.excalidraw|Pravidelný n-úhelník 2023-10-13 12.07.37.excalidraw]]
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- [[data/Rezistory 2022-06-09 11.29.33.excalidraw|Rezistory 2022-06-09 11.29.33.excalidraw]]
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- [[data/Rovinné zrcadlo 2023-11-02 13.00.20.excalidraw|Rovinné zrcadlo 2023-11-02 13.00.20.excalidraw]]
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- [[data/Screenshot_20230402_150005.png|Screenshot_20230402_150005.png]]
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- [[data/Screenshot_20230402_150549.png|Screenshot_20230402_150549.png]]
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- [[data/spoj průchozím šroubem 1.bmp|spoj průchozím šroubem 1.bmp]]
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@ -6,3 +6,32 @@ Obraz je
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- zdánlivý
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- souměrný
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> [!SENTENCE]
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> $\frac1f=\frac1a+\frac1{a'}$
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> $Z=\frac{y'}y=-\frac{a'}a$
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$a'=\frac{fa}{a-f}$
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![[Rovinné zrcadlo 2023-11-02 13.00.20.excalidraw]]
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## Optická mohutnost
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šířka čočky
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$\varphi=\frac1f$
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---
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Geom. konstru. najděte obraz předmětu o výšce 1cm zobr. rozptylkou s ohniskovou vzdáleností -4cm. Řešte pro
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a) $a=12cm$
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b) $a=8cm$
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c) $a=2cm$
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Zjištěné hodnoty $a$ a $y’$ ověřte výpočtem.
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## Index lomu cocky
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Rozdil mezi merenim ve vode ($f_2$) a na vzduchu ($f_1$)
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$n_v$ = index lomu vody (1.33)
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$n_2=\frac{n_v(f_1-f_2)}{f_1n_v-f_2}$
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@ -9,13 +9,22 @@ Geometrie prostoru
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- různoběžnost, mají společné body a jiný směr $\times$
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- mimoběžnot, nemají společné body
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## Dvou rovin
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### Dvou rovin
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- rovnoběžnost (spec. totožnost)
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- různoběžnost
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### Tří rovin
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- vsechny jsou rovnobezne
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- protinaji se v 1 bode (“roh”)
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- protinaji se v 1 primce (“sesit”)
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- 2 roviny rovnobezne a 3. s nimi ruznobezna (protinaji se ve 2 primkach, 1. a 3. rovina a 2. a 3. rovina)
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- 3 ruznobezne, protinaji se ve 3 primkach
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## Přímky a roviny
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- přímka leží v rovině $\leftrightarrow BE \subset \leftrightarrow ABFE$
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- různoběžné (mají 1 průsečík) $\stackrel{\leftrightarrow}{BC} \times \leftrightarrow ABFE$
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- rovnoběžnost $\stackrel{\leftrightarrow}{DC}\|\leftrightarrow ABFE$
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