Physics 10 - Lecture 12: Waves II

[milenica0208]

See what real physics is

[insanewarlock666]

yep osama was dead back in those days LOL

[EtienneLuu]

Not even if you speak creole, spanish, Russian, chinese, japanese, or any other languedge, people can understand. If they're taught

[MrPaulWiklund]

I thought that sound was approximate 343 meters/sec, not 3,100 m/s (28:37)

[Claxiux]

@MrPaulWiklund the speed of sound changes depending on the medium; I believe he is talking about underwater conditions here.

[diabelek945]

@MrPaulWiklund He changed it at 29:40  ...

[MrPaulWiklund]

I thought that sound was approximate 343 meters/sec, not 3,100 m/s (28:37)

[Zer0syztem]

he lost me at about 27 minutes in. He needs to check his notes before presenting.

[watgaanhieraan]

Wow!!!! thanks Prof Muller for sharing.

[jaksajak]

1:05:56

[mtemmerm]

'oct' has everything to do with 'eight' actually... he should know that. other than that I like how he teaches...

[visualkei72]

a passion for your field of study, and a passion for teaching make Mr. Muller an amazing educator.

you can be entertained while you learn, and you can tell he isn't exaggerating, he really is excited about this stuff, as everyone else in the world should!

[nicemoo]

talent, human, creative, interesting one of the few gifted teachers and a man I could share a drink with i'm sure thanks

[kinguther0]

This guy is actually better than my Physics teacher..... a million times better. I would say.

[4phoenix75]

this guy is absolutely great!!

[DrGonzo39]

BAM!!!!! PHYSICS!!!!!!!!

[jackfl4]

thanks to lecturer and the university, all 26 lectures are very good.

[zmazim]

never mind -_-

[silycaon]

shit i rated it 2 star by mistake :( :( i meant 5!!!

[ssfly]

do re mi fa sol la si do = 8.. daaaeeeh

[breakinguy]

Dr. Muller-Is a very good lecturer for this course in the physics 10,my phyzikx instructor recommended to look up him. Overall, he provides some common anecdotes to complex problemas in the natural world. I like how he describes waves, they are so complicated, to make the subject sound more interesting he should include that air is considered a fluid. Both longitudinal and transverse waves travel through air as they do in liquids.Also considered a fluid, making anecdotal stories to help relate.

[favthings]

good lecture, but have another drink, lost you when you screwed the km to m conversion

[tomfool1978]

just was on the phone with a friend, told him i'm listening to this lesson about waves. He has a mayor in physics, and told me that theres only 1 propertie of waves i need to remember! "waves are unexplainable and messy". Hes a Joker, Lolz....

[flyingporcupine2]

there is no way to describe the nature of the univerve as a whole... but we can use relativity theory to ensure probability that we are all analogous to atoms bonding with eachother as molecules which behave in an electrical fashion...we can conclude that we are all indeed part of a grand being(organism if u will, relatively) we call the univeerse...what people must see is that + and - is arbitrary... atraction and repulsion is caused by sex...the male wants to be inside the female :)

[wokensoulsounds07]

how can you possibly come to conclusion...

[landin048]

Dude. He's not teaching music. He's teaching a general overall view of waves.

[atheisttotindekist]

Yes, but when he says "oct" has nothing to do with 8... he's obviously mistaken. Octo means 8. Octopus... 8... He should know such things :) Anyways, I really love these lectures. Reminds me of my days in grammar school.

[piratong]

october is not month #8

[gas5802]

it used to be before july and august were added :)

[JohnF30Music]

TO be honest this guy shows that he doesn't know much and that's surprising. Plus he can't even play the keys lol... The music theory explanations were inacurrate too

[JohnF30Music]

basic stuff

[JohnF30Music]

and an octave is not 8 notes. it's 12 semitones

[saga212]

you look at the concept not what he's doing to portray it.

[drpepperloveforever]

Ugh relativity is a joke? Catholic schools probably don't teach reality so I understand.

[TheBlueFalconX]

XD hehe

[calvinhobbesliker2]

the soul does not exist

[archis84]

how do you know?

[calvinhobbesliker2]

about the soul? i know because all humans, and all other organisms, are is a bunch of organic molecules chemicly bonded plus water plus electricity to get it running. your brain controls your decisions, not your soul.

[archis84]

well yeah and becouse of this we come to conclusion that we havnt free will. Everything is detarminated and we live like in movie. IMPO soul is something that gives us to ability to choose, grants free will or at atleast illusion of free will. Can u have (in this predicted wourld of couse and effect) illusion of free will? Basaclly im kind an atheist but i have this subjective feeling there is some thing called soul trapped in body wich is made from dust.

[calvinhobbesliker]

actually, we came to the conclusion that free will didn't exist before we discovered quantum mechanics. before that, people thought that the universe could be predicted if the position and momentum of all particles were known. quantum mechanics said that we can't even know the postion and momentum of ONE particle. anyway, our brain is what gves us the ability to choose. the brain is run by quantum machanics, and so still has free will.

[archis84]

''anyway, our brain is what gves us the ability to choose.'' aint sure about that, brain is to big mistary to make such announcments. ability to choose doesnt work by any law - so you cant make any program or machanisms that would have this amazing ability(including brain). thats why i think we have this thing called soul.

[calvinhobbesliker2]

well, the soul is just as mysterious, if it exists, as the brain. agin, the brain is governed by random quantum mechanisms. there might or might not be free will, but if there isn't the euqation used to calculate it would be nearly impossible to solve before the person does the thing you were trying to predict.

[NecrosisOfLight]

Not to break the genius trust, but quantum mechanical phenomena are unlikely to play a central role in cognition. The inability to map the brain has to do with the organ's highly individualized specifics and truly remarkable complexity.

As for the soul, a question best left to mystics and priests.

[sn1pe352]

the speed of sound is not static , can be altered and has man dependencies on temperature , medium etc much like fluid dynamics

[EliteSn1p3r]

it's 330m/s

[TheBlueFalconX]

this is true but the speed of sound in air is also a function of temperature.

[EliteSn1p3r]

yea, true, but thats on average.

[TheBlueFalconX]

What exactly is on average? The veolcity of sound being 330 m/s or the veolcity of sound being a fucntion of temperature?

I doubt it's an average of all the speeds of sound in our atmospere. It's probably a control temperature like 'room temperature' that determines 330 m/s.

[EliteSn1p3r]

yeah the velocity being 330m/s at sea level at the earths average temperature, which i think is something like 15 degrees celsius (at sea level). Thats my understanding anyway.

[nic7nic]

speed of sound is nog 3100 m/s but (a little bit faster than) 310 m/s

[nic7nic]

Oh never mind, he corrected himself :D

[calvinhobbesliker2]

he still did the calculation wrong. the equation has depth under the radical, but he puts wavelength under it

[escobar147]

this guy is a great lecturer.

[roblow12345]

Look up Dr Muller on Wikipedia, he was one of a team of scientists who came up with the NEMESIS-star theory.

Look it up, it really makes sense.

[marsCubed]

he explains the Nemesis theory in one of the lectures on satellites

[zetreque]

I think all the people dissing the teacher and this class are not actually watching all the videos in this series to understand exactly what this class and these videos being posted on the internet are all about. Ignorant.

[dwarfer777]

this guy is such a poor teacher he misses out information

[purptrainwreak]

It's up to the students to read the text the teacher is there to help the student envision what they have already read. Don't pick on the teacher, Richard Muller is if nothing more a dedicated man from the looks and sound of it.

[raven1234]

I guess you've nothing really had bad professor. The worst teacher I had basically repeat everything inside the textbook without explaining any of the concepts. If I could choose, I'd rather had a professor like this.

[kyofuku]

interesting

[cenkandic]

very good