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
https://happy-ending.manhattan-massage.com/ - happy endings new york
Wish you feel memorable emotions ? Tired of work ? How about to have a rest and massage ? We invite you to visit massage salon in West Village.
Where can be ordered Thai massage in salons Midwood.
Massage periosteal performed masseurs
, their possibly meet by coming to our club . Girls are attractive slim figures and appearance . You always have the opportunity experience for yourself aesthetic satisfaction, just looking at them.
Our salon works around the clock .
Running massage Thai without intimate actions , what make it safe. Spa in Clinton Hill comply with rules hygiene , use disposable personal items .In the cabin vibration massage you acquire not so much massage but also opportunity relax to body and to soul.
Also our staff store your personal privacy: on the matter what way in particular you prefer to spend free time, not will know no person.
Massage in spa Windsor Terrace possibly attend people from 21 years. By calling to the salon by phone, you can sign up for necessary day and time . Spa Salon with great pleasure will welcome you.
Best Gaming Headset
(Douglashef, 21. 9. 2021 18:53)
Perhaps you're unsure if gaming headsets should be purchased or whether it's worth the investment. If you're like me, I conduct thorough research before purchasing anything. I'm here because that's what I do. I was a regular gamer so I conducted the thorough research. I'm here today to recommend the best gaming headphones of 2021.
https://forum.flashxcode.com/showthread.php?mode=linear&tid=29&pid=1243
https://www.forum.vidhooley.com/showthread.php?mode=threaded&tid=1755&pid=3418
https://www.forum.vidhooley.com/showthread.php?mode=linear&tid=1755&pid=3418
https://studentskorner.com/showthread.php?tid=112348&pid=232058
https://www.forum.billion.uk.com/viewtopic.php?t=774
lolita girls cp pthc
(NorrmanGat, 20. 9. 2021 10:00)
lolita girls cp pthc
https://m2.tc/P91p
Zac
(Actan, 18. 9. 2021 14:42)
Greetings from Ohio! I'm bored to tears at work so I decided to check out your blog on my iphone during lunch break. I really like the information you provide here and can't wait to take a look when I get home. I'm amazed at how fast your blog loaded on my phone .. I'm not even using WIFI, just 3G .. Anyhow, wonderful blog!
Closet Organization
(Leslienaf, 11. 9. 2021 17:28)
The exchange has never been hacked
Trading for 4 years
Wide trading opportunities
Convenient system for depositing and withdrawing funds
Large list of cryptocurrencies
https://exmo.com/?ref=433652
Free IMVU Credits Hack 2021
(belleboF, 9. 9. 2021 10:27)
https://issuu.com/haroldseere/docs/free_imvu_credits_wow
android ios
imvu hack 2022,/imvu free credits/ imvu credits free / 2022/ 2021
imvu hack 2022,/imvu free credits/ imvu credits free / 2022/ 2021
web coupon web coupon
(ScottComma, 1. 9. 2021 4:32)
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
https://www.hostingcouponspot.com/changeip-coupons - Virmarch coupon
organic pure care shampoo
(organic pure care shampoo, 31. 8. 2021 9:03)
Hey There. I found your blog using msn. This is an extremely well written article. I'll be sure to bookmark it and come back to read more of your useful information. Thanks for the post. I'll definitely return. organic pure care shampoo sterme.teswomango.com/map9.php
brygga thomson tg789vn
(brygga thomson tg789vn, 30. 8. 2021 13:06)
Hello, i think that i saw you visited my web site thus i came to “return the favor”.I am attempting to find things to improve my web site!I suppose its ok to use some of your ideas!! brygga thomson tg789vn neyfog.teswomango.com/map13.php
michael kors väska läder
(michael kors väska läder, 30. 8. 2021 3:21)
Hello There. I discovered your weblog the usage of msn. That is a very smartly written article. I'll make sure to bookmark it and come back to read extra of your helpful info. Thank you for the post. I will definitely comeback. michael kors väska läder theres.teswomango.com/map2.php
what to do in gothenburg
(what to do in gothenburg, 29. 8. 2021 16:51)
Hey there! This post could not be written any better! Reading this post reminds me of my old room mate! He always kept chatting about this. I will forward this article to him. Fairly certain he will have a good read. Many thanks for sharing! what to do in gothenburg saudi.sewomabest.com/map1.php
valrhona vit choklad
(valrhona vit choklad, 29. 8. 2021 6:42)
I know this if off topic but I'm looking into starting my own weblog and was curious what all is required to get setup? I'm assuming having a blog like yours would cost a pretty penny? I'm not very internet savvy so I'm not 100% sure. Any suggestions or advice would be greatly appreciated. Many thanks valrhona vit choklad sepec.prizsewoman.com/map8.php
vit singel sten
(vit singel sten, 28. 8. 2021 21:10)
Hello to all, how is the whole thing, I think every one is getting more from this web site, and your views are fastidious designed for new visitors. vit singel sten lofu.prizsewoman.com/map6.php
symtom efter en tia attack
(symtom efter en tia attack, 28. 8. 2021 10:29)
Great blog here! Also your site loads up fast! What host are you using? Can I get your affiliate link to your host? I wish my web site loaded up as quickly as yours lol symtom efter en tia attack scaran.teswomango.com/map17.php
röda prickar under foten
(röda prickar under foten, 28. 8. 2021 1:06)
You're so interesting! I don't suppose I have read through anything like this before. So nice to discover another person with genuine thoughts on this subject matter. Really.. thank you for starting this up. This website is one thing that is needed on the web, someone with some originality! röda prickar under foten lleme.prizsewoman.com/map15.php
cornflakesgodis med choklad
(cornflakesgodis med choklad, 26. 8. 2021 0:49)
What's up everybody, here every one is sharing such know-how, therefore it's fastidious to read this website, and I used to go to see this weblog everyday. cornflakesgodis med choklad sparto.prizsewoman.com/map12.php
terapia
(site, 25. 8. 2021 18:35)Tomar tadalafil con un nitrato puede causar una disminución repentina y grave en la presión arterial.
name it stockholm
(name it stockholm, 25. 8. 2021 2:19)
When some one searches for his necessary thing, so he/she wishes to be available that in detail, thus that thing is maintained over here. name it stockholm arrac.sewomabest.com/map5.php
viasat sport boxer
(viasat sport boxer, 24. 8. 2021 16:20)
hi!,I really like your writing so much! percentage we keep up a correspondence extra about your post on AOL? I require a specialist on this area to unravel my problem. Maybe that's you! Looking ahead to see you. viasat sport boxer skewol.teswomango.com/map23.php
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
Make with ussensual massag in NY
(Craigben, 21. 9. 2021 22:41)