vault backup: 2023-11-03 12:35:28

This commit is contained in:
Daniel Bulant 2023-11-03 12:35:28 +01:00
parent f624c92e61
commit e39058bbce
7 changed files with 2010 additions and 18 deletions

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@ -344,8 +344,10 @@ imagePrefix: 'data/'
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@ -6,3 +6,32 @@ Obraz je
- zdánlivý
- souměrný
> [!SENTENCE]
> $\frac1f=\frac1a+\frac1{a'}$
> $Z=\frac{y'}y=-\frac{a'}a$
$a'=\frac{fa}{a-f}$
![[Rovinné zrcadlo 2023-11-02 13.00.20.excalidraw]]
## Optická mohutnost
šířka čočky
$\varphi=\frac1f$
---
Geom. konstru. najděte obraz předmětu o výšce 1cm zobr. rozptylkou s ohniskovou vzdáleností -4cm. Řešte pro
a) $a=12cm$
b) $a=8cm$
c) $a=2cm$
Zjištěné hodnoty $a$ a $y$ ověřte výpočtem.
## Index lomu cocky
Rozdil mezi merenim ve vode ($f_2$) a na vzduchu ($f_1$)
$n_v$ = index lomu vody (1.33)
$n_2=\frac{n_v(f_1-f_2)}{f_1n_v-f_2}$

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@ -9,13 +9,22 @@ Geometrie prostoru
- různoběžnost, mají společné body a jiný směr $\times$
- mimoběžnot, nemají společné body
## Dvou rovin
### Dvou rovin
- rovnoběžnost (spec. totožnost)
- různoběžnost
### Tří rovin
- vsechny jsou rovnobezne
- protinaji se v 1 bode (“roh”)
- protinaji se v 1 primce (“sesit”)
- 2 roviny rovnobezne a 3. s nimi ruznobezna (protinaji se ve 2 primkach, 1. a 3. rovina a 2. a 3. rovina)
- 3 ruznobezne, protinaji se ve 3 primkach
## Přímky a roviny
- přímka leží v rovině $\leftrightarrow BE \subset \leftrightarrow ABFE$
- různoběžné (mají 1 průsečík) $\stackrel{\leftrightarrow}{BC} \times \leftrightarrow ABFE$
- rovnoběžnost $\stackrel{\leftrightarrow}{DC}\|\leftrightarrow ABFE$