4. Atomic Spectra (Intro to Solid-State Chemistry)

[@michaelhatch1255]

I am a 79 year old retired mechanical engineer and am thoroughly enjoying your lectures, if only I had had you as a physics teacher I may have changed to physics! Thanks

[@HuNgRy4KiLl]

Any advice for a young graduate engineer? Would love to have even a fraction of your experience and knowledge.

[@ok_computer12]

I am a recent mechanical engineering Graduate. Can you please share an ounce of wisdom on how to succeed in this field? Much appreciated 😊

[@anujinganzorig1372]

whoever made that intro thing, should become an ASMR person, that was so satisfying to hear ngl

[@anujinganzorig1372]

anyway, I'm here because I'm studying for a chemistry test on Atomic Spectra & Energy....It's High school IB-SL Chem...WHOOO (im bad at it)

[@landonschmitt7117]

Anybody else perfectly understands stuff, and then the second after gets immediately humbled and forced to watch a section for the 10th time 😂

[@jollyjokress3852]

I easily absorbed the 46 Minutes of lecture. It was this good!

[@WilanderMascrenhas]

Haha

[@reynep]

at 38:00 he did a small mistake transition should be 3->2 [Balmer Series]

[@parker.oddvoot]

REF:- 5.111 Lecture 5: Hydrogen Atom Energy Levels

[@brainstormingsharing1309]

Absolutely well done and definitely keep it up!!! 👍👍👍👍👍

[@user-mf4ug6pt3b]

Amazing, this tutor loves chemistry and it shows

[@TL-bi8ov]

What an amazing lecturer

[@broccoli9308]

When in doubt divide by 2π

[@Petrov3434]

Outstanding lecture !!!

[@zphuo]

Hydrogen have only 1 electron. @38:00 How electron drop from n4 to n3 and release red light?

[@lisa7286]

It's not Hydrogen. It's hydrogen like ion

[@zphuo]

@@lisa7286 thanks. u r right!

[@josemilian4167]

drop of hydrogen electron from n4 - n3 would give red light of 639. If you need picture look at 28:37 depicts what I am saying in move from n2 n1 similar case light would have it's own light emission though. hydrogen does have 1 e- but that e- can be at different states n=1,2,3 etc. anything passed n=1 ground state would be an excited state.

[@reynep]

but his answer was 4->3 red light in Hidrogen with 1 Proton is cause by 3->2 transition you can look into Balmer series.... & 5.111 Lecture 5:- Hydrogen Atom Energy Levels

[@CoinDoctor1]

I have HCFC in the form of Blue Ribbon coin conditioner. It says it is harmful to the ozone as a warning on the bottle. I only used this on nicer St. Gaudens and Double Eagles.

[@DawitTsed]

I am interested. Keep it up!

[@josemilian4167]

was he using rydenber's equation for question asking about 639 wavelength?

[@dennisneero9736]

Is it likely that there is an energy level for for the hydrogen atom En=-1.00×10 to the power -20

[@ptgrenville75]

In Einstein's Photo Electric effect experiment how can ejected electrons be both quantized AND linear???

[@chengzhiwu7052]

What do you mean by linear?

[@noorjahanakterjoly9414]

How MIT conduct online exams?can you upload videos regarding this?

[@dancooper8551]

Where would solid-state chemistry be without physics?😎

[@ptgrenville75]

I understand that constants have a value that does not change but how are constants determined in the first place???

[@chengzhiwu7052]

As fas as I know, it’s calculated with all the formulas and derived. I.e the g for gravity is approximately 9.81... deriving it from newtons second law.

[@webdevacademy3496]

Mostly from experimentation. Like E = hv. Here people know the frequency, experiment to get the energy and then they can calculate the h. h= E/v. Similarly C (speed of light) was found out thousands of years ago by experimentation in India, Greece and yet more places

[@00799731]

fantastic !!!

[@platones9667]

AWESOME!

[@ghenkhoash2440]

China is still releasing a lot of CFC to the atmosphere.

[@techwithvj257]

didn't get anything

[@kanishk9490]

I think you need a little bit of high school chemistry refresher

[@josemilian4167]

if your talking about calculations I get why he skipped a lot of steps. and didn't show calculations.

[@reynep]

the question is what do you even wish to get? (lousy hooman)