PS4A - Wave Properties

In this video Paul Andersen describes some of the properties of waves. He starts be identifying particles and waves as the only phenomenon that can transfer energy from place to place. He identifies the defining characteristics of waves; wavelength, frequency and amplitude. He defines sound as the movement of compressional waves through air and resonance as waves interfering both constructively and destructively. A teaching progression K-12 is also included.
Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: www.freesound.org/people/Cosmi...
Creative Commons Atribution License
All images are either Public Domain or Creative Commons Attribution Licenses:
File:2006-01-14 Surface Waves.jpg, n.d. commons.wikimedia.org/wiki/Fil....
"File:AKG Perception 120 USB Condenser Microphone with SH 100 Shock Mount.jpg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:AKG....
"File:Attributes of Music.jpg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Att....
File:Chuetsu earthquake-Yamabe Bridge.jpg, n.d. commons.wikimedia.org/wiki/Fil....
"File:Earth Poster.svg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Ea....
"File:EBIntel Corei5.JPG." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:EBI....
"File:Fénytörés.jpg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:F%C....
"File:GGB Reflection in Raindrops.jpg." Wikipedia, the Free Encyclopedia, May 22, 2013. en.wikipedia.org/w/index.php?t....
File:Interference of Two Waves.svg, n.d. commons.wikimedia.org/wiki/Fil....
"File:Little Girl on Swing.jpg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Lit....
"File:Moodswingerscale.svg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Moo....
"File:Pixel Geometry 01 Pengo.jpg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Pix....
File:Primary Auditory cortex.PNG, n.d. commons.wikimedia.org/wiki/Fil....
"File:Simple Harmonic Motion Animation.gif." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Sim....
"File:Sine Wavelength.svg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Sin....
"File:Thoth08BigasDrumEvansChalmette.jpg." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Th....
"File:Tidens Naturlære Fig40.png." Wikipedia, the Free Encyclopedia. Accessed May 29, 2013. en.wikipedia.org/wiki/File:Ti....
File:Wavelet - Meyer.png, n.d. commons.wikimedia.org/wiki/Fil....
Unknown. Sound Waves, 1878. Popular Science Monthly Volume 13. commons.wikimedia.org/wiki/Fil....

[@natefanning9709]

Hi Paul, I want to point out a small correction you could make. At 1:45 you stated that a "low-density gas" would allow your voice to produce a low frequency wave, making a lower pitched sound. That is incorrect, as helium is an example of a low density gas, and is what allows our voice to make a higher pitched sound since it is unable to slow down the vibrations from our voice like air does. A high density gas, or medium, produces a lower frequency and lower pitched sound. Using sulfur hexaflouride instead of helium would work well to get a really low pitched sound!

[@natefanning9709]

Thank you for putting this together! I appreciate the connections to the importance of waves for middle school students.

[@pedrohenriquefischer]

Mr. Andersen, you deserve more views & subscribers !! I've been watching you for about three months, your videos are great. I'll do my best to spread your channel.

[@lostaspects13]

Pedro Fischer I dissagree

[@eintroll8792]

@@lostaspects13 Go to hell

[@benwang9545]

2:09 What computer, I'm watching this on my 1854 Telegram

[@maheswaran3331]

How the waves are generated in electric circuit?

[@lomasck]

You need to get into PDE (Pulse Detonating Engines) or Pulse Jet Engines.I just want to fully know how my RC PJ engine works so I can design a better one.Waves have so many New uses still to be invented.

[@Jarrod_C]

How do you explain a surfer on a wave that is traveling forward because of the wave? Why do Tsunamis carry water onshore? I have a hard time visualizing how waves do not move the medium in the direction of the propagating sound or light.

[@Luahm5]

As far as im imagining the surfer isnt the meduiem. The water is, and the water isnt being transefered from a place to another but u can think of it as if the energy is being pushed, and when its transferring from a place to another it causes disturbance. Imagine for eg a blanket (the meduim) and a ball under it (the energy), when u move the ball while its under the blanket from a place to another it causes disturbance to the blanket but it doesnt move it from a place to another. Idk if this is helpful but it is working for me. Good luck.

[@varunkota1289]

6:50 if the wave pulse in opposite direction have cancelled each other out when they meet how are they produced again?

[@Racegas]

You probably already figured this out considering its been 3 years but I can still explain it if you wish

[@samiislam2543]

Thanks it was a very nice video!! :D :D

[@codybarnes5398]

what happened at 8:44????????

[@cesarangeles1204]

Cody Barnes “...going to have wavelengths that get much much larger.”

[@ummidontevenknow4509]

thank you!

[@gyu_gyu__]

AS WE MOVE INTO MIDDLE SCHOOL?! IM A JUNIOR LEARNING THIS RN !! (2020) 2013 middle school kids smart af

[@linahussein8185]

Thank you for your hard work. I can't believe that only a few people are interested in these things, I feel like the next generations is going to fall real bad.

[@tahadaboussi7831]

hi i want to ask you some thing what is medium ?

[@conorkenney3523]

Taha Daboussi it is what occupies the space where the wave is travelling. ie. air, water, or a solid

[@Racegas]

Yo Elan Ik you prolly wont see this comment but this is Jack from HMS lol

[@frun]

Einstein, Tesla and Gordon Freeman

[@jacktomaszek3462]

pepega