|Sep15-12, 04:06 AM||#1|
viscosity comparison method
Hi,I don know if my question will be clear,but I will try it.So,I m wondering how was derive this equation:
viscosity=viscosity(known liquid)*density(known from table)*time(liquid will get over one point of Ubelohde viscometer to second point of viscometer(unknown liquid)/density(known liquid)*time(liquid will get over one point of Ubelohde viscometer to second point of viscometer(unknown liquid).
So once again in short form:viscosity*density*time/density*time.
So,I know it is a comparison method,that means density*time/density* time is undimensional and that means,that viscosity=density*time in this case.
And now my question:Why density in this equation?Why not only weight?Or why not to neglect density and count only time?Why is density neccessary here?
Thanks for patient and widespread answer.
physics news on PhysOrg.com
>> Promising doped zirconia
>> New X-ray method shows how frog embryos could help thwart disease
>> Bringing life into focus
|Similar Threads for: viscosity comparison method|
|Why does this economical method work? Net annual cost comparison for two alternatives||Calculus & Beyond Homework||4|
|Need help with comparison method for improper integral?||Calculus & Beyond Homework||1|
|Falling sphere method to find fluid's viscosity||General Engineering||5|
|Finding Viscosity Using a Sphere-Drop Method||Introductory Physics Homework||0|
|Limit Comparison/Comparison Test on Non-rational functions||Calculus & Beyond Homework||5|