einstein coefficients

[@akashmondal9495]

thanks a lot sir... i am suffering for this concept for a long time... after watching your video .... my all doubts are clearf now...

[@Eduphile]

Thanks 😊

[@vishakhachatse6079]

Few hours before exam !!🙂😴

[@realhuman767]

Same here

[@tanyajaiswal1099]

All clear or back???

[@shreyanshshekhar9166]

@@tanyajaiswal1099 all clear

[@Sharmashikhar-cl2fb]

​@@tanyajaiswal1099 😢ab aane wali h back hi back lag kr

[@geniusandmad]

3 hours

[@rockymental3939]

Simple and detailed ❤️❤️❤️ Easy to understand.... One of my favorite on KZbin

[@itsme_AkshaySharma_04]

Interesting video sir 🙂. Every doubt is now cleared regarding Einstein coefficient

[@manyajain003]

Thankyou soo much sir for providing amazing video lectures .. It really helping us alot .(. specially for us who study one night before exam 😂) Whenever I search for any topic on yt and if I got a video named "Eduphile" .I get overwhelmed that now my concept would be crystal clear 😀☺️ Once again.. thankyou soo much sir

[@ManishaNegi-qc7yh]

E33 VVS is

[@akkiguru4634]

Heartly Thanking you so much sir........❣️

[@rawatjayofficial9414]

Amazing explanation sir Thank you ☺️

[@Eduphile]

Most welcome

[@debashishkarua44]

ThaNKu so Much for such a helpful video.😁

[@Dinogamer-45]

sir your teaching skill is wow and so amazing🥰

[@Eduphile]

Thank you so much

[@umairshabbir9624]

Thanks sir for helping our teachers they teach us after viewing your vedios .# university of education

[@Eduphile]

Most Welcome 🤗 👍

[@AshishSingh-sy2qz]

sir aap smjate bhut accha ho ....... aur video daala karo bss.... 💕💕💕💕

[@aamirshariff8680]

Heartly thanking so much sir 🙏🙏🙏

[@UniversityofAllahabad_86]

maa kasam ,kya samjhate hain sir aap!!!❤❤

[@Sakinaalii]

Very beneficial🔥 May God bless you with millions of subscribers nd views ❤❤

[@ipsitashah1954]

Sir notes ko poora dikhaya aap jab aap likh lete hai toh notes poora ek ek serialwise dikhaya kijiye jisse ki humlog notes bana sake ya screenshot leke notes bana sake ,,........... Sir aap bhot accha explain karte hai bss note karne me problem hota hai please sir iss notes wale problem ko thoda thik kar dijiye😊

[@Eduphile]

Thanks for your feedback

[@Anbeatle]

Thank you sir 👍💕 Keep growing👌👌.।

[@tarakhan313]

I watch exact 10 min before exam and got full marks🎉

[@hsji504]

Nice explanation thanks you so much sir ❤

[@afsanaakterrimi8218]

Very nice solution ❤❤❤

[@Eduphile]

Thank you! Cheers!

[@horticultureencyclopedia]

Best video thank you

[@Eduphile]

Most Welcome. Keep Growing

[@horticultureencyclopedia]

Thank you bro Mane 2009 me b. Sc (pcm)se ki thi but 4th semester or 6th semester physics me reappear thi baad me ree k exam nhi de saka tha aaj mujhe b. SC ki jarurat h Mai govt. Job karta hu Delhi me mujhe time nhi mil pata h bas aapki video dekh kar samjhkar paper ki teyari kar rha hu or MDU Mercy chance exam 2021 form dala h aapki sabhi video bahoot hi jayada helpful h thanks you sir

[@SamanandaThokchom-uo2qy]

thank you so much for providing such an amazing video

[@dollyroy6673]

thank you so much sir for providing us these lectures .Your video lectures are really very helpful ,as my mid sems are close I am preparing for it through your videos .....Thanks once again...

[@Eduphile]

You are most welcome

[@Hemant-s9x]

awesome explaination🎉

[@saurabhlakshkar8620]

Superb please continue ❤

[@richapareek5141]

Sir bohot a Accha pdate ho dil kuch kar diya

[@Eduphile]

Thanks 😊

[@gulshanbano4335]

Sir ye physics m.sc 2 sem ke liye bhi h (physics ke liye quantum mechanics) sir important h please reply.

[@aditi7204]

Very good explanation sir ❤️🙏

[@MasOOm_Saurabh]

Tomarrow my exam hai today i watching this videos very helpful for us thank you sir for this videos 🙏🏻

[@Eduphile]

All the best for your exams

[@TechnicalHeavenSM]

Thank you so much sir, i could at least write somethig in exam because of u

[@Eduphile]

All the best

[@MeetParmar-3614]

Sir stimulated emission me photo ko emit Kiya uske bad photon ki energy kya hogi high or low

[@vivekchaurasiya3195]

Awesome lecture Sir ❣️

[@boogychan]

Your videos are my last hope. Beautifully explained the concept :)

[@NavneetKumar-xv2oq]

great video thanks

[@aadilislam1103]

You are doing very good job brother....keep continue 💓🙂

[@KajalSingh-nr3kd]

Thank you so much sir 🙏🙏

[@pagalpanthifirse8250]

2 hour before to exam

[@souravkakatkar1576]

One day before exam

[@Eduphile]

All the best for your exams

[@factsabout_world694]

😂

[@ManpreetKaur-qk3qj]

Sir broadening topic pe bhi bna do video......

[@chiheero]

Thank you so much for making videos on graduation topics , keep teaching us more bhaiya becz the way you teach without wasting any time is much better than our college professor ❤️

[@Eduphile]

Most Welcome 🤗

[@HarryPotter-t3b]

Where can I get this notes..??

[@successiswaiting_997]

Some hour before exam 😭😭

[@Eduphile]

All the best

[@M_Viren_dra]

Best ever teacher

[@kunti5530]

Kya is notes ko msc k liye use kr skte h

[@Eduphile]

Ji haan

[@dumbhit4461]

Subscribed

[@tanishhh07]

Great Lecture sir!

[@SamiUllah-mu8pk]

Thanks ❤️

[@Eduphile]

Most Welcome. Keep Growing

[@deepcloak69]

Is your name Uday sir..?

[@ravinamaheshwari5176]

Tx sir... Sir ye notes ki PDF bhi provide Kijiye na

[@user-Uchiha_Clan_Master]

2 days before exam 😂😂

[@swarupsahu8560]

1day.. before my exam

[@anjanikumarmaurya5783]

Kitne no mile bhai

[@anjanikumarmaurya5783]

Me 15 days before exam 😂

[@kool6515]

5 hours before exam😀

[@Vnlkffh]

Just 10 Hour before

[@Anayaa_1234]

😂 that dancing Cartoon

[@Eduphile]

😂👍

[@rwry7626]

Watching this 1hr befor exam , MSc 3 sem special paper Laser & Photonics

[@Eduphile]

All the best for your exams

[@lewcee9869]

1 hr before exam

[@dreams3895]

Thank you so much Sir 🙏🏼☺️

[@The_monster_sid_07]

Today is my exam day and I'm watching this 1 hour before exam 😎😎😎😎

[@Eduphile]

All the best for your exams

[@The_monster_sid_07]

@@Eduphile thank you sir exam was awesome 🤩🤩🤩

[@aatifjalalkhan6255]

gajab

[@KrishnaVikki-18]

Thanks from Mysore sir ❤

[@Eduphile]

Most welcome 🤗 ❤️

[@joshibhargav604]

Please provide pdf notes if possible sir

[@smrutiranjanmahapatra5119]

Is it enough for long question?

[@Eduphile]

Yes

[@shayariorham09]

Its helpful 🎉

[@Eduphile]

Happy to help 🤗

[@aditisingh1673]

Simplified 👍

[@physicwitheasytrick18]

Sir please make more video aboutblaser

[@anshutalenthub9010]

One day before 👍🤗

[@i07_143]

1hour before exam 😢

[@Eduphile]

Thanks 😊

[@apakachannel2356]

Best sir

[@itsdiyaa256]

Sir notes bhi provide kardo 🥺

[@Sabalsinghchahal]

How to find lifetime of A21 coefficient????

[@Eduphile]

Through experiment, it is found

[@Sabalsinghchahal]

@@Eduphile no i have found that lifetime=1/einstein coefficient Means reciprocal of einstein coefficient so we can directly find it

[@Eduphile]

Yes , If level 2 can decay only by radiative emission to level 1, then A21 must be the reciprocal of the spontaneous radiative lifetime tspon of level 2: 21 spon A t = 1/ . (9) (If level 2 can decay to several lower levels, the more general relation 1/ spon 2i i t A =∑ must be used, where the sum is over all energy levels to which level 2 can decay.)

[@ajitvishwakarma7933]

Thank u

[@Codex-ik8gk]

Kiska kal exam hai or important topic padna aaya hai😅best of luck 🤞 sabko

[@jashandeepsingh9153]

Thanks sir density state ka koi bee link send kr doo

[@maskman666]

Population inversion ka lecture dedo plz sir

[@KajalSingh-nr3kd]

Description me link full chapter ka usi me hai.. Population inversion ka video..👍

[@_____Rh65]

One day before exam 🙈😎😂

[@_____Rh65]

Tq sir aapki videos dekhi bas or mera exam bhut aachha hua 😁

[@trio2180]

Are notes mil sakte hain kya

[@smohan3973]

Na nahi milega

[@trio2180]

@@smohan3973 😂

[@umeraza4664]

Thank you sir

[@souravpurohit9706]

❤❤❤❤

[@r_chauhan7725]

Voice is very low sir 🙁

[@Broglian]

1 day before exam

[@rishabhagrahari5160]

Bhai voice thoda sa tej karlo

[@Baria_Harshad]

16:25 lol but Nice solution

[@ArifAnsari-fw5ov]

2 days before exam

[@coco04123]

Sir, please upload the video for derivation of BEC

[@Eduphile]

BEC ka kya matlab dost

[@coco04123]

Boltzmaan einstine coefficient

[@cringecontent2763]

One night before exam 😂😂

[@kusamansari4289]

Iska proper note milega sir jib??

[@sayedahmed1376]

Sir pls provide us notes.

[@surajitchakrabortyofficial2462]

Me on exam day's morning 😶‍🌫️😶‍🌫️😶‍🌫️😶‍🌫️

[@ShorokPa]

nice explination

[@Eduphile]

Thanks and welcome

[@syedazeem2776]

Few minutes before exam 😅

[@Eduphile]

All the best for your exams

[@kashish_singh18]

Few hour before exam 😅

[@Eduphile]

All the best for your exams

[@earthinsider389]

Mcq bhi banao sir

[@Lotusphysics]

Thanks sir

[@Eduphile]

Most Welcome 🤗

[@artiyadav4005]

Few minutes before exam 😂

[@Eduphile]

Thanks 😊

[@GUYWHOLOVETOBECOVERED]

Few minutes before exams

[@Eduphile]

All the best for your exams

[@zeenatmalik7864]

❤❤❤

[@romrom532]

Bhai kal physics ka paper hai moj kar di

[@Eduphile]

All the best

[@sandeepprajapati3088]

Apka btaya hu bilkul. Smjh nhi aata kyuki lgte hai ap. Advance bnne Topic chhod kr kaha chle jaate hai Bakk yar

[@satyaranjannayak2849]

Love you sir 😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍

[@yashmodi2432]

you are suffering from Hyperhidrosis [sweaty hands and feets ] just like me

[@Eduphile]

Summer ma video banaya Gaya tha dost Bina fan k closed room ma taaki unwanted noise na aaye video ma

[@yashmodi2432]

@@Eduphile I support u r dedication 👍👍

[@shreemshrivastava8550]

Sir aap aapke notes share kr dijiye plz

[@uday001vlog]

Few hours before exam 😔

[@characterbased4996]

1 hours before exam😑

[@Eduphile]

All the best for your exams

[@Rohit0n7]

Just 2 hours from exams...😅😂

[@ritesh27raj]

12 hours phle dikh rha 😂😭😂😭😂