I hope you find this video helpful. Please note that the answer at 5:25 is 5.0 x 10^(-3) and not 5.0 x 10^(-2) as it is shown in the video. The preparation for such videos takes lots of time and sometimes small mistakes like this slip easily. Enjoy!
@freeradical91235 жыл бұрын
Nice video easy to understand From India 🤓👌
@eldhose56915 жыл бұрын
Double beam
@snehamathivanan76794 жыл бұрын
Thanks a lot...very informative video...
@shanequalawrence47824 жыл бұрын
i am not too understanding how you get the power
@maimoonamumtaz63763 жыл бұрын
Thank you sir... Your student from Pakistan 👍👍👍💓💓
@jackyllerena53366 жыл бұрын
Woah, everything was so clear. This video is those kinds of videos where you can pause on a certain time and have all the information you need neatly placed with explanations and everything. Thanks man :D
@shivammkhare5 жыл бұрын
I am watching this in 2018, you are really great Sir, Good explanation, you deserve million subscribers but it's sad nowadays people wants to watch only Crap, youth is destroying their Time & Career.
@marzenasemaj7204 Жыл бұрын
You explained it really fast and clear. Thank you for this video it will help me in a labolatory!
@1babyflix6 жыл бұрын
Really clear and easy to follow explanation. Good job.
@TemeraireBjartskula6 жыл бұрын
I have a test about this next week and truth to be told, I did not understood a thing about it, this video helped me to clear it all up so thank you for taking the time to make this. It was really helpful!
@AliHayek6 жыл бұрын
+LuciferHasPinkSparklyWings you are more than welcome.
@michaelseraphim10562 жыл бұрын
You really saved my life. God bless your heart . Thank you so much for sharing your brilliant knowledge 😊 🙏
@karanmakwana51295 жыл бұрын
Thank you so much I was facing problems in this topic but now all is clear
@dr.pratikk89304 жыл бұрын
Best video on Beer lamberts law... Thanks And keep making such videos
@md.ibrahimkhalil60116 жыл бұрын
Nice informative video. Thank you very much for sharing with us.
@khinmyatthu9289 Жыл бұрын
Hello Dr. Hayek, Thank you very much for this video. The explanation is clear, well-organized, and getting on point, which helps me a lot. I have a few questions. Is there any chemical relation between the concentration of the samples and the incident light emitting or absorbing? I am getting unstable absorbance values with measurements at low concentrations but not at high concentrations. This finding is also beyond the understanding of Absorbance = logarithms of transmission though my values are at 0.1% of T. or could you please enlighten me on the keywords I could find for the articles? Thanks a lot.
@AliHayek Жыл бұрын
Hi there, Light-matter interaction is a known phenomenon. Sometimes it does not affect the structure of the matter, but some other times light can be aggressive and provides enough energy to break weak bonds. If the absorbance is not stable or keeps changing, it could be that the light is transforming the matter into something that interacts less/more with light. It is a broad topic. I hope this will allow you to start your search. Best of luck.
@shadowwhitehart91906 жыл бұрын
Time point 5:33, I think there is a mistake: 0.5 and not 5.0
@pseudomonas697 жыл бұрын
bruh you deserve an emmy for this vid
@shubhambhosale47236 жыл бұрын
Good one bro
@isaiaharchibald44387 жыл бұрын
great video but the answer is 5.0 x 10-3 not 5.0 x 10-2. the video really help me thanks btw.
@debasishmajhi6876 жыл бұрын
WATCHDATFREE u know right that calculators of different types gives different value if u don't know then Google it
@kelw57876 жыл бұрын
Yeah I calculated this as well and when I heard it was 5.0 x 10-2 I was confused about what I did wrong xD
@rahullovesthepayne86906 жыл бұрын
i thought i was the only one lol
@jamespandiannaraj57446 ай бұрын
Excellent lecture
@MrAbdalla19966 жыл бұрын
THANK U VERY MUCH THE DIAGRAM WITH DESCRIBTION IS VERY USEFUL
@sajamas57667 жыл бұрын
راااائع جد..نريد المزيد من الفيديو
@alokneet6 жыл бұрын
You are doing excellent job. A little humor will make it perfect. Can you tell me what software you are using for making these videos.
@AliHayek6 жыл бұрын
+BioMania thank you. I use screenflow
@adanalvarez68304 жыл бұрын
dude please make more chemistry videos.... every second of the video had a purpose.
@shrishantroy24943 жыл бұрын
Wow. Great explanation
@Isaac-ru5jb6 жыл бұрын
Really good video! helpful and informative and easy to understand, really good job! thank you so much!:)
@mohammedabdalla8077 Жыл бұрын
Nice and very useful
@jeevaniroyal84075 жыл бұрын
Gud lecture sir gathered more information
@esraatarek9533 жыл бұрын
Thanks very much for this helpful video. But I wanna ask about the references, please?
@loyalty64953 жыл бұрын
The explanation was helpful, thank you
@dancemabu63417 жыл бұрын
very good my man,u explain nicely
@khinmyatthu9289 Жыл бұрын
Thank you very much. It is really appreciated.🙏
@adeelbashir58476 жыл бұрын
nice work sir
@oumarshah13352 жыл бұрын
Outstanding
@anastaciamodo82735 жыл бұрын
well presented Shukran
@SquatBenchDeadliftz5 жыл бұрын
Very helpful video. Easy to understand. Thanks.
@niranjanavadivel73886 жыл бұрын
Nice explanation Ali Hayek
@debasishmajhi6876 жыл бұрын
Video was very helpful sir thx a lot
@KulbirAhluwalia6 жыл бұрын
Awesome video sir! Thank you!
@Starwave...38216 жыл бұрын
Very good video
@ipekkocaoglu94824 жыл бұрын
Hello the video is wonderful. I can not understand one thing which is when we look the transmittance vs wavelenght graph, why do we observe this shape or when we look the absorption vs wavelenght graph, why do we observe this shape? Thank you so much
@AliHayek4 жыл бұрын
The best way to think about it is that for the absorption spectrum, the higher the intensity of the peak, the more the light is being absorbed by the solution. Now if you think about it in terms of transmittance. The more the light is absorbed, the less of it will transmit. So transmittance measures how much light is going through the solution. So the lower the peak, the lower the percentage of light transmitted. In a simpler way, the transmittance spectrum is the opposite of the absorption spectrum. I hope it is clear now.
@EJ-qs6qh5 жыл бұрын
fantastic!! thank you. very clear and perfect pacing.
@jeevaniroyal84075 жыл бұрын
Gud lecture sir and I have few queries regarding biotechnology
@aayataltamimi93256 жыл бұрын
Amazing explanation. Thanks a lot!
@TheDina1323 жыл бұрын
Thank you! It s so easier!
@ramamukumbi55667 жыл бұрын
man you do a good job thx keep up good work ;)
@tiibrahim57146 жыл бұрын
Wow! I really appreciate it Sir
@tarkeshkandregula65597 жыл бұрын
thank u so muchh.. such a good video :)
@dannyjean-noeluppiah82703 жыл бұрын
Great explanation! 👍🙏🙏
@sylviaemejuru19564 жыл бұрын
Thank you very much Sir
@rabiadegia43616 жыл бұрын
lovely explanation thank you!
@saraherself986 жыл бұрын
Thank you so much ..a very good video :)
@aashnagurjar24777 жыл бұрын
thnq so much sir
@vicentesayson29904 жыл бұрын
Good day sir, is the molar coefficient is a constant given per chemical substance or it's something that we can compute too? I am wondering how am I be able to get the Molar Coefficient of unknown Species and Unknown Concentration, that is present in the water for example lake. This is for spectrophotometer experiment, I can only get the Absorbance and Transmittance but not the Concentration and Molar Coefficient
@AliHayek4 жыл бұрын
In your case you will not be able to determine the concentration or molar extinction coefficient. You will need one of them known to determine the other.
@manuelperezruizdiaz94186 жыл бұрын
thanks, that's was great it was very helpful
@bharathibharathisekar4843 жыл бұрын
Tq,sir
@yogitavarshney32686 жыл бұрын
Please upload beer law for mixture
@mustaphaaliyumuhammad46563 жыл бұрын
thank you sir
@abdullahshahnawaz65855 жыл бұрын
Thank you
@lamp12156 жыл бұрын
JazakALLAH
@domlehane28197 жыл бұрын
thank you very much mate!
@edusmart11265 жыл бұрын
thanks, you are really great sir
@samscience4445 жыл бұрын
helpful video thaaaaaank you so much
@fatimasaleh93015 жыл бұрын
Love this video
@Edmerls6 жыл бұрын
Nice
@nick1f7 жыл бұрын
Is I0 actually the intensity of light as read by detector when a sample of pure solvent (water) is placed in the cuvette?
@AliHayek7 жыл бұрын
Nick F yes it is indeed. And this is called the blank and it is used for the background noise correction.
@piyushsen75026 жыл бұрын
Thanx bro it really helpful
@binteabdul61075 жыл бұрын
tx for uploading very helpful
@sanaafreen19376 жыл бұрын
At 2:54 % transmittance is denoted as %T and also in last line as A. Didn't get it. Please explain
@AliHayek6 жыл бұрын
If you read carefully the last line says that the absorbance (A) can be given in terms of (%T) and the expression is given. I hope this helps.
@whats19832 жыл бұрын
I am watching from Uzbekistan. How can I contact you?
@AliHayek Жыл бұрын
Go to www.alihayek.com. 👍
@tharunstar15545 жыл бұрын
Super
@noorikhan29745 жыл бұрын
Thank u so much sir
@ericmanso73557 жыл бұрын
nice
@knowledgejunction16435 жыл бұрын
Suuuupppppeerrrrr
@v.c.jayaramaiah48153 жыл бұрын
more simple calculation of perceent transmittance or OD vaalues in to Percentage will be more useful for basic chemistry students, videos explainigncalculations msy not be available
@premalathagattu9073 жыл бұрын
Sir how find (£)coficiant value Please reply
@AliHayek3 жыл бұрын
This is explained in details by the end of the video. This is the only way to find epsilon. Good luck.
@premalathagattu9073 жыл бұрын
@@AliHayek thank you sir it is very useful video
@PHYSICSINSIGHT4 жыл бұрын
watch this uv visible spectroscopy is explained very briefly... @