Standing and Stationary Waves on a String - A Level Physics
Вставка
- Опубліковано 25 сер 2024
- This video explains standing and stationary waves on a string for A Level Physics.
Waves transfer energy, right? Well progressive waves do. But standing waves and stationary waves don't go anywhere and they store energy. Waves that reflect off a fixed position superimpose with itself, producing a standing or stationary wave (wave superposition).
Thanks for watching,
Lewis
This video is recommended for anyone studying A Level Physics in the following exam boards:
AQA
CIE
Edexcel
Edexcel IAL
Eduqas
IB
OCR A
OCR B
WJEC
_____________________________________
MY PHYSICS WEBSITES
Find even more videos organised by exam board and topic at:
GCSE Physics Online
► www.gcsephysic...
A Level Physics Online
► www.alevelphys...
MY UA-cam CHANNEL
Your support in watching this video has been invaluable! To contribute towards the free videos on UA-cam, make a small donation at:
► www.paypal.me/...
FOLLOW ME
► www.youtube.co...
► / physicsonline
► / gcseandalevelphysicson...
#waves #alevelphysics #physicsonline
Mate you might just have saved my Physics A-Level
Your way of explanation is sooo awesome
Seriously
specially in less time , you cover a lot of stuffs
Thanks :)
+Usman Alamgir Thanks
Dude, just two words... THANK YOU
No problem!
@@PhysicsOnline I never thought you'd reply but Happy New Year! Thank you very very much for making lives easier for self taught A level students like me. We really appreciate your existence in this world and all your unconditional efforts to make Physics enjoyable and understandable for students around the world! God bless you
The stop motion on this one is gracefully done!
Man, I cannot thank you enough, you are saving me. Thank you, from the core of my heart! Aghhhh I just cannot formulate a good enough sentence that can truly express my gratitude!
Thank you very much
At 2:31, did you mean to say 'node' instead of 'antinode,' as shouldn't the sentence be "The distance from a node to another node is equal to the wavelength of that wave, over 2" (not "The distance from a node to another antinode is equal to the wavelength of that wave, over 2")??
no
yea he made a mistake there
Around 4:00, i don't understand the f.
Can explain? Why first is f1, then f2 then f3.....?
Thanks for the help - I needed it
Thanks so much! I was struggling with this topic.
This is just what I need !! THANK YOU :D
Thank you for this video. You taught me something new :)
Nice animation!
You sir are a live saver. Can't thank you enough.
Very very very nice... Thanks you saved me a lot of time!!
You are a life saver ... Thank you so much ... I'm able to understand much better
Did you mean the distance between 2 nodes is lambda over 2?
Aiknaath Jain You're right. A common mistake is that people think the distance from node to node is the wavelength when it is half the wavelength.
But how about the distance between two antinodes? Isn't that a wavelength?
@@RinuPereira Distance between two antinodes is still half wavelength
Fell asleep during this part of lesson, worth it
Thank you! That was really helpful :)
Sir those explanations are really good
Thank you so much this helped a lot!
Mate you are amazing! Respect++🥇
Why do the original wave and the reflected wave not destructively interfere
could you go through similarities and differences of progressive and stationary waves? It is on the spec, but I can't find any information on it online.
Thanks again and again
Videos are really really good.
Can you explain where the extra length of string comes from when the standing wave is at its highest amplitude vs when it is a straight line.
Thank you
Brilliant Videos
Does that mean when a stationary wave is created, at the nodes is there deconstructive interference and at antinodes there is constructive interference?
That’s right
GCSE and A Level Physics Online thank you!
Hi, at 0:56 you say the two progressive waves will have the same phase difference? It was my understanding that the two waves should be in antiphase in order for stationary waves to occur?
Great video, really useful!
What is the pattern between the different harmonic patterns?
Shouldn't the 3rd harmonic be 3/2 Lambda
+Cardifyz you could rearrange to write it as L= so it's L=3/2 Lambda , because L contains 1.5 wavelengths
1.5 wavelengths in one length
therefore λ = L/ 1.5
therefore λ = L / (3/2)
therefore λ = 2L / 3 remember leave, change, flip
Splendid
Hi :) Great video.
Quick question: isn't wavelength supposed to be the distance between 2 consecutive nodes/antinodes? why is it lambda over 2 for the fundamental frequency
Distance between 2 consecutive nodes or antinodes is HALF OF WAVE LENGTH
At 4:06 you have written 3rd Harmonic as Lambda= 2/3 L. Shouldn't it be Lambda= 3/2 L for 3rd Harmonic?
1/3 L =lambda/2 so from that we can say lambda = 2/3 L
what are the characteristics of stationary waves ???
where do you pluck the string to form stationary waves?
shouldnt the reflected wave cause interference and cancel out the produced wave???
its in phase, so the interference is constructive
awesoooooommmmmeeeeee
if the stationary wave doesnt transfer energy then why can you hear sound from a guitar?
If I've understood correctly, at nodes the energy that would be transmitted by a progressive wave is cancelled out by the fact that in a standing wave, destructive interference occurs where the energy transferred is cancelled out and so noise from sound waves is cancelled out. However, at any other point in the wave, constructive interference between the transmitted wave and the reflected wave (which forms the standing wave), occurs, and so the amplitude is actually doubled at these points so at those place in the wave the sound produced is actually louder and it's at these points where you actually hear the sound, loudest, at the antinodes.
misunderstoof it g. It holds most of its energy because it is being held at two points, so the wave is not progressing anywhere. But, the particles in the wave are vibrating. This trasnfers vibrations to the air, causing sound
@@elliotskunk thank you so so so much. I was dying for an answer to my question......
1:41 can this ever form from EM waves like light waves
really useful video thanks. Just wondering what is the difference between a stationary wave and a progressive wave in terms of phase difference?
+Naomi Snow Phase difference can apply to both, do you have an example question where this comes up?
what is the difference between a maxima and an anti-node?
Maxima is the maximum point on a diffraction pattern (on young's double slit) while an anti-node is the point of maximum displacement on a stationary wave.
What does the period of a standing wave exactly mean?
Your videos are good but i think u need to make your videos a bit slower. If u could do your videos in the style of mygcsescience that would be alot better instead of just doing revision videos...
+Nav Raja I understad what you mean - they can go quite fast especially when there is a lot of new information to take on board and I take my time a bit more with some of my more recent videos. It is worth pausing and rewinding these videos when it does get to a tricky part.
+A Level Physics Online i REALLY appreciate you replying to my comment. I have a question? If i didnt look at the textbook but watched your videos would that be enough for me to get a good grade in physics? I understand i will have to read from the text book some what...but what if i mostly used my time to revise from your videos
You've got to do both. These videos will help explain the topics but you need to see the information from more than one source, and with worked examples and questions that you set yourself to complete.
+A Level Physics Online Hi, at 0:56 you say the two progressive waves will have the same phase difference? It was my understanding that the two waves should be in antiphase in order for stationary waves to occur?
@@PhysicsOnline dont listen to this guy. Keep the videos short and snappy. Nothing worse than revising the night before the exam scrolling through 40 minute videos to get one equation....
hi
negawatt