Lec 4 | MIT 3.091 Introduction to Solid State Chemistry

[NinjatookmySOE]

I learnt this in A-level Physics...

It's strange how these things overlap. Interesting though.

[wassoncrane]

Watched a human dissection right before this. I MUCH prefer chemistry lectures.

[kritikalmass7]

@wassoncrane where did you watch the human dissection at??

[wassoncrane]

@kritikalmass7 Youtube, surprisingly. Just search for it

[kritikalmass7]

@wassoncrane right after asking that question I found them. Yes, I also prefer the chemistry. The dissections are interesting but disconcerting to say the least. Thanks for the response.

[wassoncrane]

@kritikalmass7 Of course! :)

[tony225]

In my opinion chemistry is much easier to understand once you understand physics. For instance, if you have no idea what voltage actually means or what a potential difference is, this lecture and this material will leave you scratching your head on a few points.

[jembishop]

Sorry, I thought he forgot it, I'm just so used to seeing it in r squared form.

[jembishop]

Oh dear. He forgot coulombs law! It is an inverse r SQUARED relationship. He just said it was proportional to r. Still a very good teacher.

[flagman09]

@jembishop inverse square is for coulombic force, he is referring to electrostatic potential energy which is r

[Diemedes]

@jembishop

Coulomb's law refers to a force, which indeed is an inverse square law. But the electrostatic potential is inversely proportional to simply the distance. The equation he used was the energy equation, which involves the electristatic potential and thus what he wrote is correct.

[jembishop]

Oh dear. He forgot coulombs law! It is an inverse r SQUARED relationship. He just said it was proportional to r.

[Rookycastle22]

did u hear a lol?

[brunoojusto]

This teacher is really good !

[Mathclassisevil]

I am doing this in grade 9, and my teacher cant explain it for shit! this man is my only chance at a passing grade. Thank you for uploading!

[flowewritharoma]

Thanks for uploading^_<)))))))) Let's get started!!!

[MrChem303]

Ohh... I just love CHEMISTRY... :D

[recyclingismylife]

One of the best professors I have ever been 'taught' by...between him and Dr. Diamond at Berkeley, and Dr. Lewin, there are some seriously good teachers out there, and I am all the more grateful for YouTube for having taken the initiative to help the Open Course Ware movement :)

[recyclingismylife]

One of the best professors I have ever been 'taught' by...between him and Dr. Diamond at Berkeley, and Dr. Lewin, there are some seriously good teachers out there, and I am all the more grateful for YouTube for having taken the initiative to help the Open Course Ware movement. 

[dude488]

Clear and straight to the point! i wish all professors taught like this.

[Oreganoseasoner]

What year would one learn this at MIT? I don't understand their numbers.

[AlucardVonVilinus]

this is identical to my a-level quantum physics course!! How is this chemistry? Or is the fact that it is called solid state chemistry make it quantum physics?

[Oreganoseasoner]

@AlucardVonVilinus these are the basics of chemistry. you can't understand modern chemistry without proper understanding of certain models of the atom. This is actually fairly similar to a first semester chemistry course.

[AlucardVonVilinus]

@Oreganoseasoner I did not know, I should have realised that as a physical science chemistry is closely related to physics and maths.

[0warrior4life]

is solid state chemistry same as solid state physics ?

[rohannesburg]

This a more awesome Indepth Recap of my HSC Physics Course, Awesome Lecture + Lecturer

[Liebetraurig]

Around 40min the professor said some very funny thing, the accelaration of electron on a screen was actually the principle of how television works and when he said"I could watch science documentary"he looked at the students, but no one seemed to catch the humour, he shook his head helplessly and it was really cute!!!

[yoyaya007]

and we are harvard so we know hahahahahahahahahahaha LMAO!!!!!!!!

[Reqrezentin]

"This is very hot"

hahahaha

[andaquesi63]

It's incredible what this professor wrote, that the sum of the forces (coulomb and dynamic) for the planetary model is zero! Like to say that the sum of all forces on the Earth is zero! The Earth would move along a straight path!

[Yoyocita2]

@andaquesi63

Yeah, and Earth is a subatomic particle?? Last time I checked, the Earth doesn't have Coulombic forces.

[samuel91222]

love this professor. he talks fast, but very clear

[zaphr89]

I have a question, sometimes the teacher is doing equations that are for me quite exotic (for example 5:15, im on the last year in high school though) Do the students understand all of these equations, and if so which classes should you have read?

[recyclingismylife]

there is a sublime moment of deus en machina 40:40

[Kraized]

NICE. In 4 days I watched for lectures and learned so much more than I expected. I'm gonna have to review them again to catch what I didn't understand the first time through.

Some guy left a comment saying this stuff is elementary, all I have to say to that is that I have to start somewhere. I mean all I knew before this was the meaning of the letters of E=mc squared.

I knew that I knew some physics and chemistry but this put letters and figures to some stuff I already knew.

[gayglue]

Verry haat. LOL I love it.

[ramsesrccl]

is this from the '60's... this is very very elementary!

[discordandruin]

I still can't get over this stuff, the secrets of matter and chemistry for free on the internet. What an age to be alive!

[Oreganoseasoner]

@discordandruin I am amazed by how easily information is accessed. And, at the same time, I can't believe there's still so much ignorance.

[SunDaygoPinoy]

wow i watched 10 minutes of this i didnt understand a single thing but i felt like i learned something new :]

[JonThm]

molecular nuclear fusion will save the world!

[puretroubleman]

can someone please make a animation for the elections jumping up and down getting excited.

[puretroubleman]

see lecture notes for details

[metallmattias]

Brilliant. I am a high-school-teacher-to-be teaching Chemistry in Sweden, and his knowledge and rethorics are a true inspiration. Very good professor.

[polos505]

I like how physics is used in this lecture.

[MP15aug]

this guy is a great teacher.

[Mattprole]

Calculus, Physics and Chemistry all in one. Beautiful.

[izadk]

Excellent lectures. Thank you.

[imac50000]

Joseph Fraunhofer - doesn't he deserve to be mentioned?

[mattsphagetti]

Wow...this IS beautiful! I wish I had learned chemistry like this!

[JADEKINGsRULE]

@mattsphagetti now you can:) welcome to 21st centu rion...

[ucdohboy]

I've lectured before. It's easy to make a mistake or forget a step when you're on a time schedule. Try it sometime. It also serves as an archive and point of reference to continue from next lecture.

[SpamAreI]

I don't care if a professor uses notes, as long as he presents the material in a clear and organized manner like this one does.

[daraooo]

This is very helpful, thankyou

[Mattprole]

He rights so quick, it's nice.

[rharris2727]

he is a fukin awsome teaccher, ahhaa have you seen how fast he gets to the point...

[zathura7]

cewl...osm

[nhojmabon]

thankyou

[maxdelbruck]

3.091, 3.091, 3.091, 3.091!!!

[daous2]

I wish I had this professor for MY university chemistry lectures :O