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I guess one would need to impose a strong magnetic field to see the hyperfine splitting?

Professor Williams--very helpful presentation. How does one estimate lifetimes of metastable states? And how does one go about designing a new laser? I guess one needs to have a very accurate map of the possible energy levels of the species involved???

I found this very informative for someone like me, who has no idea what any of this means. I wanted to learn about Quantum Mechanics and my sister sent me your videos. Thanks 👍🏼

I think it'll be easy to understand if u write it simply in the form of (sigma 1s^2 sigma *1s^2....pi2px^2=pi2py^2...) btw thanks for your efforts

I fell a sleep and this is what i woke up to

Thank you for sharing your lectures. They're awesome!

Hey Prof another great video thanks! Do you have a video or can I make a request for a discussion on vibronic coupling between some common fluorophores and the relative position of an added nitrile, alkyne, or other group in the cell “silent region”? E.g., look at the structure of FITC, if you excite the ITC vibration (IR or Raman), will it couple to an electronic transition if you have a suitable visible excitation source? Or does it have to be much closer to the conjugated electrons like the nitrile in rhodamine 800? Thanks!

Thank you very much sir

Sir hats off your presentation it is really amazing Sir is it possible to share the background for the physical equations that you presented

Its [CrH6]3- ? Great video! Thanks and greeting from Germany :)

Thank you so much sir for this cource Sir, which book you will prefer for symmetry and spectroscopy Please recommend

Great video. thanks!

Very nice 👌🏻

Thanks, I learnt a lot from your online lessons. Could u please give some lectures about the relation between lattices vibration and raman spectroscopy or even the associate with band structures of crystal. That could be more interesting.

Great video!

Can you tell me where I can get the raw figure of the 3D phase diagram?

Hey Darren, awesome video! I was wondering if you still have the excel spreadsheet available to play around with. The link in the comment section leads to a page not found. Thanks in advance.

I love this memory trick to remember the cathode and anode!! This would have helped me and I'll be using this with my students now. thank you!!:)

I am a 77 year old US citizen (New York) and ex-teacher having taught 25 years of Chemistry in Australia. I am doing a lot of Physics and Maths, now Physical Chemistry at University of Technology (Sydney). I am trying to update all my Chemistry and Physics. Your Physical Chemisttrry lectures are outstanding!. I am so impressed with the level of care you take to make Quantam mechanics understandable. I have just done our first HCl spectroscopy and thermodynamic lab. Some of your lectures I watched until wee hours in the morning because they were so interesting. I am getting closer to understanding the Schrodinger equation. I always started my semester'slesson by telling my students that they were more intelligent than me. That I did not know everything. I had a wonderful teaching career because I worked with that principle. I hope to be able to do some research before I die. Maybe even drop dead at the University. Your lectures have inspired me to keep going and to be part of the learning with the very much younger students I share each lesson. The young people inspire me and make me want to keep learning with you and them. I am looking forward to the book and wish you would put up the names of title you have been part of so far so I can try to get them here.

For the case of reflection of H2O molecule, how comes the hydrogen atoms got moved in zx plane and did not in zy plane? what determines the movemen?

This sounds amazing! Is there any update?

Hi sir suggest me some organic chemistry books 📚

I had a lot of trouble in this. Thankyou for your explanation. Lots of love from India.

Sir, Advanced in organuc chemistry is it 6th edition? And colored?

Thanks for the video sir.

your tutorials always magnificent, thank you very much.

I was sitting in your class when you were filming these videos. After four years I am watching them again to refresh my memory. Thank you very much for uploading these.

I have no idea why no-one elogy about this beautiful lesson. I'm new in spectroscopy and your lecture are so interesting and brilliant in my advice. Thank you for sharing your lecture and making it free and accessible to students.

Lmao you're the first person who I've ever heard talk about the video game superhot. Great game.

This lecture is jaw droppingly engaging and lucid!

Prof DW provides such simple, sharp, clear explanations, and as a bonus some funny anecdotes for levity (and oft-overlooked history). Thank you for your masterful teaching, and especially sharing these lectures. I'm looking forward to watching the whole lot!

Hi, can I draw the charge density difference through Gaussian too? Thank you.

I like to use these pipe operators > >> < with a batch file to redirect the output of echo commands into a new text file and to redirect the text file to DOS Debug to create a new 16 bit executable for DOS from the output and the output contains internal Debug commands and a routine made with x86 assembly mnemonics.

💐 Promo-SM

Professor, Can I conact you, please?

Remember when chemistry was about bonds 😂

How can i determine Ra mathimatically please ?

Is it possible to predict "good" solvents that weren't tested experimentally using Excel and POV-ray?

Huge amount of thanks

Hello, sir. I have a question. Is it possible to enroll in a master's program in chemistry, provided that I study the bachelor's course on my own. And based on this, when reading various chemistry textbooks, is it necessary to watch lectures at the same time, focused on specific textbooks and topics?

I kept nearly all of my Physics and Math texts from Undergrad and Grad School. I let go a number of books titled such as "Graduate Problems in Physics" since they were geared towards exam prep. I regret letting go of my "Modern Quantum Mechanics" by J. J. Sakurai.

Hello fellow Physical Chemist. Thanks for the video and approach. We adapted this video to make thermodynamic cycle experiments for both the Stirling engine and Otto cycle. The new experiments are for engineers.

Hi Prof. William, what is the fit value at 31:39 before solving the Ro by solver? Also, while using the solver to fit the solubility, there could be many solutions that can also satisfy the fit function =1.

I appreciate your explanations of the Grotrian Diagrams!

What if I don't know R0? Can i compare the D,P,H values of a polymer and a particular solvent which are almost the same and assume the Ra of that solvent as the R0 of the polymer to find other solvents that lie inside the sphere?

Hi Sir, could you recommend any books on polymer chemistry?

Brilliant!! served on a silver platter with gold leaf...

Hi Dr.Darren! You are doing so great in teaching. But there are so many PChem videos🥲not easy to finish them all

Keep the Good work sir

I'm very thankful for the free acces to these good structured lectures. Especially the follow along tasks make it easier to deepen the understanding. Thank you!