Viscosity Measurement using Ostwald's Viscometer

Viscosity Measurement using Ostwald's Viscometer - Amrita University

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14 жыл бұрын

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Ostwald's viscometer is a traditional viscometer to measure the viscosity of a liquid. It is a U-shaped glass tube. In one arm, the bulb A is connected with a fine capillary. The lower end of capillary is connected with a U-tube provided with a bulb B in the second arm. The bulb is necessary to maintain the hydrostatic pressure during flow of liquid. Through the capillary tube, the liquid flows with measurable speed. There are two marks C and D above and below the bulb A. The liquid flows under its own weight.

Пікірлер: 36

@akhataybeh 12 жыл бұрын

I understood it from your video, more than I did from the lab in the university ... Big THANKS :)

@RoseSheeps 13 жыл бұрын

Brilliant! This is so clear, thank you so much!

@sangeethabavan4177 8 жыл бұрын

Nice Presentation..... Thank you.... Please upload more experiments

@robythundathil 12 жыл бұрын

really informative....and video is very clear....thnk u very much..

@abhaypawar6714 10 жыл бұрын

thanks to amrita lab providing nic practical video

@muneeralam4478 8 жыл бұрын

5 stars for this... nice explained

@debaprasaddev8574 10 жыл бұрын

Thanks to Amrita Lab for providing audio visual demo for HOW TO MEASURE VISCOSITY using U-Type Ostwald Viscometer . The English voice was very clear and easily understandable. It is simple but very useful tool with very nominal cost and effort. I must appreciate for the kind effort of Amrita Lab. Millions of students and researchers will be benefited from this .

@forbest612 7 жыл бұрын

?can i gate on report about the test pleas

@fahmylina123 8 жыл бұрын

A very nice illustration and demonstration.

@Qasimkhan-pm5tb 8 жыл бұрын

Nice Presentation. Thank you

@Rupack 12 жыл бұрын

very much helpful :D :D contains a lot of useful infos :) thanks a lot !!

@anasretube 7 жыл бұрын

I am some confused, please help you called n2 as the absolute viscosity of the liquid. I knew that the capillary tube is to measure the kinematic viscosity not absolute. also, I found some article about the Ostwald's viscometer, and in such article they represented the n2 as the viscosity coefficient not as the absolute viscosity, could you please illustrate or send me a link to understand what is actually the n2 refers to? and what is definitely the viscosity coefficient ? thanks

@RoaJay1 12 жыл бұрын

@rahulkalwade you can measure it by poise or stoke depending on the equation you may use .. if u want it in poise then : viscosity = k*t*density in stoke : viscosity = k*t k is the instrumental constant , which you can eliminate by knowing the viscosity of a liquid and the calculate the viscosity of the unknown by a ratio .. hope you understand though it's kinda late :)

@singaravels7414 10 жыл бұрын

very useful video

@faizurrahman4267 9 жыл бұрын

Nice presentation.

@AjaySingh-sj8ne 8 жыл бұрын

thank you so much

@12344795 11 жыл бұрын

very helpful for my exam

@ashajadhav5711 10 жыл бұрын

nice video Upload more experiments

@akhataybeh 12 жыл бұрын

I understood it from your video, more than I did from the lab in the university ...

@KandukuriBhargavi 12 жыл бұрын

nice video

@rahulkalwade 12 жыл бұрын

i like your process..but unit is necessary to determine viscosity... which one unit is taken about it?

@sphiedd 13 жыл бұрын

what equation would i use if it was the relative viscosity?

@AymenIbrahim 11 жыл бұрын

nice vedeo

@chrischeung5648 7 жыл бұрын

If I am doing a test with oils, how much oil do you think I'll need to complete a viscosity test?

@AnujKumarChhetri 10 жыл бұрын

Upload more experiments.

@forbest612 7 жыл бұрын

?can i gate on report Pdf about the test pleas

@kasiviswanath4784 8 жыл бұрын

why to dry the water with acetone

@johnferguson7235 8 жыл бұрын

+Kasi Viswnath The acetone breaks the adhesion between the glass surface and the water molecules. When the acetone is poured out, all of the water is removed. They the acetone evaporates leaving no residue. Pure alcohol can also be used but it works in a slightly different manner. It is eqauly effective.

@shafiranasution1013 9 жыл бұрын

nice presentation.. but, still hard for me to undestand the languange.. I have to concentrate hard to figure out the english

@johnferguson7235 8 жыл бұрын

+Shafira Dian Rizki Fitriana Nasution There is Closed Captioning on the video. If you look at the bottom right side of the video, you will see a small box with two letter "cc". Click on that box and the captions will appear. Some videos have multiple languages available.

@shafiranasution1013 8 жыл бұрын

+John Ferguson thank you, that helps ☺️