Mechanické vlnění
2. Mechanické vlnění
2.1 Vznik a druhy vlnění
2.2 Rovnice postupného vlnění
2.3 Interference vlnění
2.4 Odraz a lom vlnění
2.5 Ohyb vlnění
Vlnění
- Jeden z nejrozšířenějších fyzikálních jevů
- Více druhů vlnění – liší se různou fyzikální podstatou
- Příklady: mechanické, elektromagnetické vlny (radiové, mikrovlny, světlo, rentgen, UV, IR záření)
2. Mechanické vlnění
- Př. Vodní hladina
- Vlnění se šíří všemi směry
- Při mechanickém vlnění nedochází k přenosu látky, ale pouze energie
- Podstatou mechanického vlnění je přenos kmitání látkovým prostředím
2.1 Vznik a druhy vlnění
- Vlnění vzniká v látkách všech skupenství
- Příčinou je existence vazeb mezi částicemi prostředí ® kmitání se vazbou přenáší na další částice a současně se přenáší energie kmitavého pohybu
Vlnová délka
- l[m]
- Vzdálenost, do které se dostane vlnění během jednoho kmitu (1 perioda)
- l = v.T = v/f
Rychlost mechanického vlnění
- Závisí na prostředí, ve kterém se šíří
- Nejrychleji se šíří v pevné látce ® těsnější vazby mezi částicemi
Druhy vlnění
1) Postupné vlnění
a) Příčné
- Body kmitají kolmo na směr vlnění
- Lano
b) Podélné
- Částice kmitají ve směru vlnění
- Zřeďování a zhušťování částic
- ……………………………………..
2) Stojaté vlnění
- Vzniká skládáním kmitů
2.2 Rovnice postupného vlnění
- Vztah, který umožňuje určit okamžitou výchylku v každém bodě řady, kterou se vlnění šíří
- Tato výchylka závisí na čase a na vzdálenosti od zdroje vlnění
- Okamžitá výchylka je pouze funkcí času
- y = ym.sinwt
- y = ym.sin2p(t/T – x/l) ® 2p(t/T – x/l) = fáze vlnění
- touto rovnicí můžeme popisovat příčné i podélné vlnění
Komentáře
Přehled komentářů
It's remarkable to pay a quick visit this web site and reading the views of all mates on the topic of this paragraph, while I am also eager of getting knowledge. tharo.aretenb.se/decorations/hoega-jaerndeper-i-kroppen.php hoga jarndepaer i kroppen
tips mot foglossning aresgrb.se
(aresgrb.se, 25. 4. 2020 3:26)
It's an amazing article in support of all the online viewers; they will obtain benefit from it I am sure. gesed.aresgrb.se/skin-care/tips-mot-foglossning.php tips mot foglossning
pris pГҐ kopparskrot tastyandinteresting.be
(tastyandinteresting.be, 25. 4. 2020 2:58)
Hmm is anyone else experiencing problems with the images on this blog loading? I'm trying to determine if its a problem on my end or if it's the blog. Any suggestions would be greatly appreciated. tastyandinteresting.be/relaxation/pris-p-kopparskrot.php pris pГҐ kopparskrot
lavendelns minispa karlskrona aresgrb.se
(aresgrb.se, 24. 4. 2020 8:21)
Good respond in return of this difficulty with firm arguments and telling all on the topic of that. comph.aresgrb.se/trends/lavendelns-minispa-karlskrona.php lavendelns minispa karlskrona
rensa avlopp Г¤ttika tastyandinteresting.be
(tastyandinteresting.be, 24. 4. 2020 1:15)
Keep on writing, great job! tastyandinteresting.be/useful-tips/rensa-avlopp-aettika.php rensa avlopp Г¤ttika
nieuwe collectie sieraden tastyandinteresting.be
(tastyandinteresting.be, 23. 4. 2020 9:33)
Hi everyone, it's my first go to see at this web site, and post is really fruitful designed for me, keep up posting these types of content. tastyandinteresting.be/beautiful-things/nieuwe-collectie-sieraden.php nieuwe collectie sieraden
bio oil prisjakt aresgrb.se
(aresgrb.se, 23. 4. 2020 2:52)
Very soon this site will be famous among all blogging and site-building users, due to it's good posts flamne.aresgrb.se/advice-girlfriends/bio-oil-prisjakt.php bio oil prisjakt
flugger farg angelholm aretenb.se
(aretenb.se, 22. 4. 2020 8:04)
Its like you read my thoughts! You appear to know so much approximately this, like you wrote the e-book in it or something. I believe that you can do with some p.c. to force the message house a little bit, but instead of that, this is excellent blog. An excellent read. I will definitely be back. apor.aretenb.se/for-men/flugger-faerg-aengelholm.php flugger farg angelholm
sukkerchok symptomer aresgrb.se
(aresgrb.se, 21. 4. 2020 20:20)
Great delivery. Great arguments. Keep up the good spirit. rere.aresgrb.se/beauty/sukkerchok-symptomer.php sukkerchok symptomer
vegetarisk protein recept aretenb.se
(aretenb.se, 21. 4. 2020 19:09)
Hey There. I found your blog using msn. This is an extremely well written article. I will be sure to bookmark it and come back to read more of your useful info. Thanks for the post. I will certainly return. theot.aretenb.se/sport/vegetarisk-protein-recept.php vegetarisk protein recept
ont i midjan vanster sida newsandfashionse.be
(newsandfashionse.be, 20. 4. 2020 16:04)
I blog often and I genuinely appreciate your information. This article has really peaked my interest. I will bookmark your website and keep checking for new details about once per week. I opted in for your Feed as well. newsandfashionse.be/travels/ont-i-midjan-vaenster-sida.php ont i midjan vanster sida
trallolja bast i test 2018 newsandfashionse.be
(newsandfashionse.be, 19. 4. 2020 21:59)
Hello there! This blog post could not be written any better! Reading through this article reminds me of my previous roommate! He continually kept preaching about this. I will forward this article to him. Pretty sure he'll have a great read. Thanks for sharing! newsandfashionse.be/trends/trallolja-baest-i-test-2018.php trallolja bast i test 2018
kolakakor med sirap newsandfashionse.be
(newsandfashionse.be, 19. 4. 2020 2:30)
Hi there! This post could not be written much better! Going through this article reminds me of my previous roommate! He constantly kept talking about this. I will send this article to him. Pretty sure he's going to have a very good read. I appreciate you for sharing! newsandfashionse.be/beauty/kolakakor-med-sirap.php kolakakor med sirap
nike free rn dam newsandfashionse.be
(newsandfashionse.be, 18. 4. 2020 1:59)
After I initially commented I appear to have clicked the -Notify me when new comments are added- checkbox and now every time a comment is added I get 4 emails with the exact same comment. Perhaps there is a means you can remove me from that service? Thank you! newsandfashionse.be/music/nike-free-rn-dam.php nike free rn dam
vegetarisk artsoppa crockpot newsandfashionse.be
(newsandfashionse.be, 16. 4. 2020 22:28)
It's amazing to pay a visit this web page and reading the views of all friends about this article, while I am also eager of getting familiarity. newsandfashionse.be/beauty/vegetarisk-aertsoppa-crockpot.php vegetarisk artsoppa crockpot
overby trollhattan oppettider midsommar newsandfashionse.be
(newsandfashionse.be, 15. 4. 2020 17:50)
It's appropriate time to make some plans for the future and it is time to be happy. I have read this post and if I could I desire to suggest you some interesting things or suggestions. Maybe you can write next articles referring to this article. I desire to read more things about it! newsandfashionse.be/travels/oeverby-trollhaettan-oeppettider-midsommar.php overby trollhattan oppettider midsommar
kurs danske kroner til norske ecuniphi.se
(ecuniphi.se, 9. 4. 2020 10:49)
Hello there, You have done a fantastic job. I will definitely digg it and personally suggest to my friends. I am confident they will be benefited from this site. ecuniphi.se/decorations/kurs-danske-kroner-til-norske.php kurs danske kroner til norske
hodepine som varer i flere dager ecuniphi.se
(ecuniphi.se, 8. 4. 2020 20:05)
Write more, thats all I have to say. Literally, it seems as though you relied on the video to make your point. You obviously know what youre talking about, why waste your intelligence on just posting videos to your site when you could be giving us something enlightening to read? ecuniphi.se/decorations/hodepine-som-varer-i-flere-dager.php hodepine som varer i flere dager
comment enlever les points noirs du visage ecuniphi.se
(ecuniphi.se, 8. 4. 2020 7:06)
Hi there, I enjoy reading all of your article. I wanted to write a little comment to support you. ecuniphi.se/trends/comment-enlever-les-points-noirs-du-visage.php comment enlever les points noirs du visage
ceinture pour ventre plat femme ecuniphi.se
(ecuniphi.se, 7. 4. 2020 11:01)
Hey I am so happy I found your blog, I really found you by error, while I was researching on Digg for something else, Regardless I am here now and would just like to say cheers for a marvelous post and a all round thrilling blog (I also love the theme/design), I don't have time to go through it all at the minute but I have bookmarked it and also added in your RSS feeds, so when I have time I will be back to read more, Please do keep up the superb job. ecuniphi.se/useful-tips/ceinture-pour-ventre-plat-femme.php ceinture pour ventre plat femme
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50
hoga jarndepaer i kroppen aretenb.se
(aretenb.se, 25. 4. 2020 9:17)