Phase contrast microscopy

  Рет қаралды 127,097

Shomu's Biology

Shomu's Biology

Күн бұрын

Пікірлер: 54
@flirt4lust
@flirt4lust 11 жыл бұрын
LOVE, LOVE, LOVE. Thank you for ALL the details. Very easy to understand. Thank you for you time in posting this educational video.
@deeptirao5982
@deeptirao5982 10 жыл бұрын
Explained in a very simple and clear way. Thanks a ton!!
@gizemgulhan5063
@gizemgulhan5063 7 жыл бұрын
Thank you for all the microscopy videos. It really helps for my microscopic imaging class.
@oglow100
@oglow100 11 жыл бұрын
Thank you very much. Clear, concise, and straight to the point!
@yoshyoka
@yoshyoka 11 жыл бұрын
Thanks, very instructive indeed. You might upgrade it with a mode "condensed" version: I thing you can say the same amount of information in less than half the time
@kuldeepsbiology4496
@kuldeepsbiology4496 7 жыл бұрын
Your videos tells how laborious u are sir. . . Thanks a lot . . To make the things easy for us. . .May God bless u
@shomusbiologyofficial
@shomusbiologyofficial 7 жыл бұрын
+Kuldeep kaur Dhaliwal thank you. Glad you liked my lectures
@odvutmanush3234
@odvutmanush3234 7 жыл бұрын
You are amazing man . Thanks for your effort. God bless you.
@shomusbiologyofficial
@shomusbiologyofficial 7 жыл бұрын
+odvut manush thank you. Glad you liked my lectures
@vysakhvg4137
@vysakhvg4137 6 жыл бұрын
Thnku sir
@theavantgardesoul4071
@theavantgardesoul4071 5 жыл бұрын
Kindly go slow and make neater diagrams rather than overlapping on the slides. Sometimes we lose the track of diagram u explain manually. Most importantly please improve your English. But overall your explanation is surely amazing, I have a presentation to make on microscopy, I have referred to your videos whilst preparing for it.
@shomusbiologyofficial
@shomusbiologyofficial 5 жыл бұрын
Thabk you. You are looking at the old video. Pleas e-check the new one. Hope it will clear all your doubts
@singhavtar7884
@singhavtar7884 6 жыл бұрын
A very helpful vedio... Thank you sir..!!
@shomusbiologyofficial
@shomusbiologyofficial 6 жыл бұрын
You're welcome
@ShivSamrat
@ShivSamrat 5 жыл бұрын
Please make another video.. Of this.. & it would b better if u explain it in the white board... This video is quite clumsy Nd complicated... It takes a great effort to understand
@vikrambhaskar7976
@vikrambhaskar7976 6 жыл бұрын
Hello sir! Have a small question. You said if no specimen is present all you see is a dark background. But the cone of light coming from the condenser through the glass slide has to get refracted somewhere right? Doesn't a part of it pass through the objective lens? If so then you should see somewhat a bright background instead of dark background..
@jiexihou2745
@jiexihou2745 11 жыл бұрын
easy to understand. thanks very helpful
@priyachowdarybejawada9519
@priyachowdarybejawada9519 6 жыл бұрын
Dis really helped me thanks
@shomusbiologyofficial
@shomusbiologyofficial 6 жыл бұрын
You're welcome
@bilkisuabdullahi4873
@bilkisuabdullahi4873 12 жыл бұрын
Thanks alot,well understood.
@AnitakumariS1an2ay
@AnitakumariS1an2ay 7 жыл бұрын
thank u sir,u teaches well.
@susmitamondal4795
@susmitamondal4795 6 жыл бұрын
Thank you
@madhuparmar3592
@madhuparmar3592 5 жыл бұрын
Very helpful ..thanxx..plzz take a look at the comments nd improve...but it's good 👍
@shikhavats8920
@shikhavats8920 6 жыл бұрын
Sir smjh hi nhi aa rha tha pure board pr aap kahan bta rhe h kyonki marker highlight nhi tha
@trishabiswas3421
@trishabiswas3421 5 жыл бұрын
Sir, does this technique give us 2D or 3D images?
@martinabonucci3844
@martinabonucci3844 11 жыл бұрын
Thank you!!!!!! Maybe I'll pass my exam only thank to this video!
@tusharchaturvedi5171
@tusharchaturvedi5171 9 жыл бұрын
+Martina Bonucci did you ?
@bouncycastle955
@bouncycastle955 12 жыл бұрын
Very helpful, thanks.
@rokeyamumtahanamou6188
@rokeyamumtahanamou6188 5 жыл бұрын
I did not understand the concept on positive phase ring and negative phase ring.Will u kindly explain again. Thanks in advance.
@hillarywokoma1841
@hillarywokoma1841 11 жыл бұрын
really simplified...thanx
@omkarlande8413
@omkarlande8413 7 жыл бұрын
Thank you sir:-), this video is really helpfull.
@rajia2201__
@rajia2201__ 6 жыл бұрын
I found it very clumsy having all the pictures at the same slide and also it didn't show movement of cursor properly
@raghwendrakumar5442
@raghwendrakumar5442 11 жыл бұрын
great , easy to understand for everyone
@shirinmalekjani2645
@shirinmalekjani2645 8 жыл бұрын
was good but with too much repeatitions
@monicathukkaramnt
@monicathukkaramnt 9 жыл бұрын
please avoid repeating the same thing over and over again.
@sonikamalhotra2508
@sonikamalhotra2508 6 жыл бұрын
Very helpful fr me shomu
@shomusbiologyofficial
@shomusbiologyofficial 6 жыл бұрын
You're welcome
@xianglu8583
@xianglu8583 10 жыл бұрын
this interpretation of 90 degree phase shift is wrong, the phase change inside the specimen is not 90 degrees but a very small value, the phase change of the background light is not to get a destructive interference, but to get a largest slope with respect to the phase information of the specimen. if a destructive interference is achieved at the focus plane, then the contrast only comes from the scattering effect of the specimen but not from the phase information of it. in order to get phase information, the phase relation between the scattered and the unscattered light has to be 90 degree, because here the derivative of the cosine function has the largest value, and the intensity is very sensitive to the phase change caused by the specimen. when it is 180 degree as it is interpreted in the video as the destructive interference, the derivative of the sine function is 0, and the intensity doesn't change with the phase change caused by the specimen, therefore no phase information is resolved. I'm quite sad to see this wrong understanding of the phase contrast microscopy is held by most of the biologists and widely distributed. 
@riddhisanchaniya9260
@riddhisanchaniya9260 5 жыл бұрын
Generally ur vidio is outstanding but at this time Can't understand properly...plz make another vidio of this michroscopy
@rukhsaryusuf4432
@rukhsaryusuf4432 6 жыл бұрын
thank you sir
@tathadent
@tathadent 11 жыл бұрын
thanks a lot
@smritim674
@smritim674 6 жыл бұрын
Plz make short videos...
@raghwendrakumar5442
@raghwendrakumar5442 11 жыл бұрын
a lot of thanks
@sunnysadhwani7762
@sunnysadhwani7762 7 жыл бұрын
sir plz explain the slide with no specimen again in hindi and fast
@singhnandan25
@singhnandan25 4 жыл бұрын
You made it very complicated ........use white board .....
@shomusbiologyofficial
@shomusbiologyofficial 4 жыл бұрын
Use my recent video on this topic. It was very old
@achanyasjayan9195
@achanyasjayan9195 5 жыл бұрын
Please avoid repatitons...
@zakiyafarooquifarooqui5596
@zakiyafarooquifarooqui5596 6 жыл бұрын
Please descibe in hindi
@dipitadas2215
@dipitadas2215 5 жыл бұрын
good content but poor speech. very distracting when you repeat all the things. please comsider making another video.
@simnashajahan3193
@simnashajahan3193 7 жыл бұрын
please stop repeating the same points
@sal2372
@sal2372 5 жыл бұрын
That voice
@shreyankamoily6493
@shreyankamoily6493 5 жыл бұрын
Please Stop repeating same point again.
@zaidsiddiqui2337
@zaidsiddiqui2337 5 жыл бұрын
Pls do not stammer
@rudranarayan9587
@rudranarayan9587 6 жыл бұрын
Kitna baar bolta hai ekk baat ko .confuse karta hai
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