IR Spectroscopy
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- čas přidán 20. 08. 2024
- Well, this is weird. What are all these squiggles? Those peaks represent the wavelengths of infrared light that don't get to the detector, because there's some functional group in the sample absorbing them. Professor Dave busts out some dance moves in this one. Do the symmetric stretch!
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I swear one sentence from this man makes me understand the whole topic better than an hour class.
I'm a senior in college and I've been watching your videos since sophomore year. You sir are a lifesaver and a gradesaver.
that was insanely well explained. you deserve every single subscriber.
In my intention he deserves ALL the Sub´s...and stupid Prank Channels go crazy with subs...poor humanity.
Very good information.
I´ve refreshed my English skills , and on top of that, I´m packed with new knowledge.
Go on to the next Video on this topic.
*btw nice Tattoo
*sry for misspelling xD i have to refresh even further ;)
have a nice day all :)
Depending on where you are Scientists may use the opposite. Here we invert it, instead of dips we use peaks. Otherwise it's the same
The question is, does he deserve tenure? Perhaps!
instablaster.
Hands down the easiest to understand IR spectroscopy vid I found on youtube. The explanation is clear and engaging.
It's 12:36am and I have my chem final at 9 tomorrow morning and I'd been flipping through my textbook and noticed IR spectroscopy, which I've never seen before, but which definitely will be on the final...so I'd just like to take this time to thank you for saving me about an hour of trying to understand this just from a textbook. Thanks for saving me time and energy!
did you pass?
Clare Maguire did you pass...
update: passed the course with an A+!! (didn't take me 4 months to get the results in though, only just noticed the replies now)
Clare Maguire oh yes!! Congrats!!! Tools my ochem 2 final today!
Give me no
You're truly a professor, IR has never been narrated so well to me
this saved my life, HL chemistry is kicking my butt and this is just what I needed. Everything is so clear when you explain it!!
lol i've done it for 4 semesters and i can totally relate
IB buddies!
How did they figure this out at first?💀
so smart...and such great hair..
hahahahah great hair !!!
a professor hair.
he's got the hippie hair tho.
This video changed my perspective from a neglected chapter in my Remote sensing course to me wanting to pursue a career in it.
Thanks a lot!
couldn't have been explained any better. Perfect. Thanks my man! I feel extremely confident with it right now. It's time to look through all your other spectroscopy videos!
Im pretty sure my chem teacher has seen this video cuz he was dancing with his arm like that in class😂
It's the best way to explain it!
Totally agree :)
😅😅😅
Mine did too 😭
Chem Professor here, we all dance like this when we explain IR 😅😅❤️
finally , a concise explanation on why graphs show transmission and a reference to the detector - looking for this has been killing me , and yet a 10 minute video explained better than i could find after 20 minutes searching, thanks Professor Dave - you're a real lifesaver !
Professor Dave: talks very advanced science
Also Professor Dave: *swinging my arms asymmetrically is a very difficult thing to do*
Such a great explanation. Have been struggling to understand spectroscopy and so grateful I see ur channel
Just like your other videos, this video is perfect for those who need a deeper explanation on infrared spectroscopy. To be honest I struggle with identifying stretches in an IR spectrum and this video explains that and more. Thank you.
Thank you so much Professor Dave! I read about this in an MCAT prep book... If we ran a spectroscopy of my understanding, it would have demonstrated 0% absorption. After watching your video I have a much better understanding of how this process works! Thank you again!
😂
so well explained! These videos are such classics, people have skipped comments for 2 years now but worth updating comments.
needed this! we're going over NMR next week and i'm trying to get ahead :)
this man just explained in the first 4 mins what my org chem 2 teacher in university right now couldn't explain in 5 classes.
I wish our university professor could explain and made lectures, topics this easy. These videos are really helpful. Thanks to Professor Dave.
As a not-so-wise man once said, "Spectroscopy needs to be in a container."
I´m a spanish speaker and I didn't understand this theme before a found this video, now I totally understand everything, what a great video you have made, thanks
Your video was so helpful and I love your enthusiasm!
thank you so much for posting tutorials like this!
I was really confused when reading my textbook but
from this short 10 minutes video, I actually understood because your explanation was 🖒🖒🖒🖒🖒🖒🖒🖒🖒🖒🖒
Ohmygod. I love all these videos. They're weirdly fun and knowledgeable to watch.
i love weird fun!
@@ProfessorDaveExplains me 👋👋
That witheboard has borne an incredible amount of knowledge... thank you Prof. Dave!
Really well explained. From very basics and in depth. Got me to study IRs of some simple molecules as phenol and acetone and benzoic acid. Thank you. IR is a really very interesting concept
Everything becomes so much more clear after watching your videos! Thank you!
Brilliant prof. dave, you're the man! you should have way more views for this video. i'll be showing it in my lesson later today.
You explain everything so well, thank you!
He explains more than my teacher. Keep it up Professor Dave, you ain't just covering the USA, but the entire world.
Thank you sir for after 4 years of college I finally understand IR well
That was easy to understand! Thank you, Professor Dave!
YOU ARE WONDERFUL SIR,YOUR VEDIOS ARE SHORT AND CRISP.IS JUST TAKES FEW MINUITS TO UNDERSTAND THINGS WELL
The first three minutes are an incredible summation of the theoretical principles of IR Spec 😮 I really wish I had known this existed when I was learning about it in class 😂
I love you man! you literally saved me from failing
Holy cow, you explained this so well thank you!
This is very good
It has given me the very basic understanding than what my lecturer did
Do it into detail please
Watching this before our spectroscopy exam, thanks a lot sir .
Great teaching! Thanks from Brazil!
Prof. Dave saves the day once again.
Well, Dave thank you for your great explaining. I practise english (listening) and learn chemistry thanks to your channel. Great job! 👏👏
Loved this! Thank you from Finland!
I saw your videos in first time .your video helped me a lot to understand spectroscopy.love from India
I love your symmetric and asymmetric motions 😆
Hey Dave.... You are really on of the best teachers in the world. And. the work you do is just extraordinary..... You're Great...... Your tutorials are really useful.....
thanks so much! happy to be of help
I am so thankful to you! We need more professors like you.
Your way of explaining things is really good.I enjoy viewing your lectures.
Thanks man, simple and understandable, but not so broad as to be not useful: 5/5 stars
This video uses a graph inverse of what scientists here use. Instead of dips we use spikes. Otherwise it shows the same information. I finally figured out how to build molecules this way 2 days before the exam
Thank you so much, congratulations for your great explanation. Can you make a video about emission spectroscopy?
i'll put it on the list!
Thank you very much:D Now I understand the IR-Spectroscopy. I wached so many videos but I just understand yours. :D
i liked this video before playing it because i already knew i was gonna fully understand IR spectroscopy afterwards
I had never understood IR spectroscopy until now, great Video 💯
Hitting it out of the park. Thanks Dr. Dave
you gave me a new insight into organic spectroscopy.
Thank you for a great video.
I am grateful for you Professor Dave
Parabéns pela aula!!!!! Extremamente didático! Você merece muito sucesso!
Congratulations for the class!!! Extremely didactic! You deserve a lot of success!
oh! thank you sooo much! wohoo i survived! one of the best lectures that i ever had !
thankyou sir , explanation is perfect 😍
best explanation so far
Super...less time consuming.....quick understandable❤❤❤ respecting you master 🙏🏻🙏🏻🙏🏻
thank you professor dave
The vibrational modes occurring in syn- fase are symmetric, and those in anti-phase are ANTI-symmetric (not Asymmetric)
You are changing lives!
Concise and precise video
I followed you because of flat earth debunking videos. Now i am actually using your videos for my thesis work.
Thank you for saving me from highschool all the way to university...
thanks Dave SO UNDERSTANDABLE
You deserve a nobel prize in education mate !
first time I saw the symmetric and asymmetric stretches by my prof I lol-ed. Still do everytime I see it. Great vid!! Thanks for sharing!
haha yep me too! in fact i only remembered him doing it and decided to do it myself because of how funny it looked.
Thank you! This is perfect, now I am aware of IR Spec and can be prepared for my quiz tomorrow
Now my concept is clear about ir spectroscopy thanks professor Dave ✅
I was struggling to understand. Well explained! Thanks a lot, Professor Dave.
Excellent explanation
A carbonyl group is C double bonded to O right? The functional group you identified on the right of the whiteboard is an sp2 C-H, which has a significantly different frequency (3050-3150) than carbonyl (1620-1680), which your drew in the spectra. I'm a little confused why you drew the carbonyl frequency in the spectra but identified it's functional group as a sp2 C-H instead?
lifesaver honestly
You're videos are so curious sir!... Then thnxx alot hve spent on u're valuable tm with us around a smart tech lifestyle!.. Forever to loving passion on a warm example!.. Within clear CRYTALLISATION
you always make great videos but this one HIT! tysm 🤩🤩
Thank you ❤️😃
Fans from Sri Lanka 🇱🇰😃
EVERYTHING U SAID MADE SENSE, LOVE YOU DAVE NO HOMO
omg, thanks for the video. I couldn't understand what my teacher was trying to explain to me until this moment, hope I'll pass the exam c:
Simple and great explaination , thanks a lot 🌸
Thanks Professor Dave
No words for how grateful I am. You are such a blessing💖
explaining and vaice very good......
sir you know everything 😀😀
but I don't know nothing 😢
but your lecture give me some knowledge 😇
Best explanation on CZcams
Thakyou sir your videos are still very usefull . You saved
My energy , time
Great videos prof Dave! Keep it up
I enjoyed that explanation. Happy Days.
Thank you Professor Dave for doing these videos!
this will probably allow me to continue medschool! Thank you so much!
very nice explanation, thank you very much
My doctor said I needed a spectroscopy......or was that a colonoscopy..........oh well, I guess I will find out next week.
splendid. absolutely
well exlained! Thank you sir!
this video is amazing, thank u!! im studying for a test and helped a lot!! ~ Larissa- from Brazil
It's 4am and I'm writing an oganic chemistry 2 exam today at 12pm. Using these to get me through it 🥺