Density and Specific Gravity (Fluid Mechanics - Lesson 1)

An overview of the meaning of density and specific gravity, along with their calculations and some example problems. The relevance of specific gravity in analyzing urine is also discussed.

[@StrongMed]

Believe it or not, all of the diagrams and pictures in the fluid mechanics series were made directly in PowerPoint. For the most part, PowerPoint only allows drawing of simple 2D figures, so creating semirealistic 3D images requires a combination of gradient shading, 3D rotation of the 2D objects, shadowing, and some creative workarounds to overcome the program's inherent limitations.

[@Sama_Riyadh]

THIS IS SO AMAZING !!
THANKS A LOT

[@ouss991]

thanks for your efforts . really appreciate that you took the time to make this series

[@StrongMed]

Shivam Soni, I'm glad you enjoyed the video. The software: I start with making a PowerPoint slide set. For simple diagrams and pictures, I draw them directly within PowerPoint. For more complex stuff, I either use Flash, Fireworks, or Adobe Illustrator. I then export the slides as jpegs. I record the narration in Audacity. The music is rendered in Finale. The jpegs, narration, and music are then stitched together in Premiere. The process is actually not as cumbersome as it might sound.

[@janethrees9907]

The salt fix by dr james dinicolantonio
And
Salt your way to health by dr david brownstein
Salt plus water equals health
We r salty people
Blood urine sweat tears and birthing waters
Water can not be held without adequate salt stores or the body risks death from hyponatremia
Hydration requires salt
Salt requires water

[@shivama380]

thanks for replay sir . i ask you because i also wont to make it. i am mechanical engineering student so i study fm ( fluid mech ) in last sem . so after the end of my semester i come to know that fm is very good subject but difficult to imagine so i thought that it batter that make animation so every one can enjoy and understand it so you did that so thanks a lot sir for sharing video and ur knowledge

[@ypure3859]

Thanks..well presented..very concise Enjoyed.

[@2fbDJLL]

Gracias!!! I never imagined though that fluid physics applied to medicine too.

[@shivama380]

hey i like ur your video can you tell me in which soft were you did this ?

[@lemueljohnurbano3705]

I like this playlist. I decided I'll view every video when I watched the role of surface tension in the lungs episode.

[@dgrxd]

Can somebody tell why the ratio of 2 densities is called "specific gravity", when it has NOTHING to do with gravity ?

[@vijay85321]

Because gravity of earth acts on the body in water too.

[@MmekomUdosen]

Love this video. Thank you!

[@huaythai898]

Very good and easy to get understand.

[@priyeshpatil3106]

thankyou
for explaining.

[@Peter_1986]

First time I have seen a physics video with a "Drugs are bad, m'kay?" message at the end.

[@oOoironhideoOo]

Incredibly Helpfull !
Im a Med Student in Chile, and I'm on vacations making a review of what i've seen this year at medschool, and this is a really usefulll guide :)
i have a question though: if you find Traces of protein on the urine test, doesn't that envolve that it's somehow affecting the SG too ? (apart from cardio problems)

[@StrongMed]

That's a good question! Actually, it takes marked amounts of proteinuria to have a measurable effect on urine SG. For example, imagine a patient normally produces 2L of urine/day and has a consistent urine SG of 1.010. If the patient suddenly develops nephrotic syndrome and puts out 4 grams of protein a day in the urine, but maintains the same amount of fluid intake, sodium intake, and overall urine production, the urine SG would only increase to 1.012. This is within the range of error of the measurement.
Interestingly, the SG can impact interpretation of trace proteinuria in a different way: the significance of 1+ or 2+ proteinuria on dipstick is much greater in a patient with a low SG (i.e. dilute urine) vs. high SG (concentrated urine), since the former implies greater urine production per unit time, and thus greater loss of protein per unit time.

[@libancanaable]

Thanks for this, just had my second lecture in fluid mechanics and was totally baffled by the terminology used.

[@knowledgezone8748]

its wonderful to learn thanx

[@olliesjollies68]

Nice work

[@JeneralJosh]

When you display the equation for SG, did you mean to say "density of a fluid" rather than "density of a liquid"?

[@arbieatienza5974]

JeneralJosh when you say fluid its either gas or liquid

[@JeneralJosh]

Arbie Atienza Yes, but they specifically said "liquid".

[@StrongMed]

JeneralJosh I'm so sorry, I didn't see the original comment in this thread until the recent responses (CZcams sometimes does this). When the concept of specific gravity is involving the comparison of a substance's density to water, it is implied the substance is a liquid. Although I've never encountered a situation in which this came up, if the substance of interest was a gas, it is my understanding that the reference to which its density is compared is air at sea level and "room temperature". (Use of the term "specific gravity" within the context of medicine always implies comparing a liquid's density to that of water.)

[@mechanicalengineerslecture1140]

Good sirji

[@hasnaouimohamed5772]

thank you

[@vijay85321]

So Good

[@alarissacamila]

thank you so much!

[@Cricketlover-sc8fm]

Thanks sir 🤙

[@MohdTaufiqueSiddiqui]

Thank you so so much.. 😇✌🏻

[@jovillestrella7772]

plss send a file about this topic in fluid mechanics density and pressure

[@rafaelmuzzi628]

where is lesson 2?

[@StrongMed]

Archimedes' Principle and Buoyancy (Fluid Mechanics - Lesson 2)

[@gangon5331]

I have Chronic pancreatitis