Measuring Pressure With Barometers and Manometers

  Рет қаралды 219,396

Professor Dave Explains

Professor Dave Explains

Күн бұрын

Пікірлер: 139
@michaelpisciarino5348
@michaelpisciarino5348 5 жыл бұрын
0:58 Barometer 2:33 Hydrostatic Pressure 4:02 Manometer, measuring pressure exerted by trapped gas 5:00 Finding gaseous pressure 7:36 Comprehension Check
@griffinmachayi5078
@griffinmachayi5078 2 ай бұрын
Thank you so much.
@FlawzyOSRS
@FlawzyOSRS 3 жыл бұрын
Came here for a simple explanation of a barometer 2 weeks ago, left with more knowledge and this weeks study material on manometers and atmospheric pressure testing for boiler draft. came back to say thank you for the thorough explanation, and great animated imaging for each. 10/10.
@ljbrown3311
@ljbrown3311 3 жыл бұрын
Wow, I wasn't expecting the hair cut!! But great video thx! It really helps me explain things to my students. I often make them watch your videos for homework :)
@ajx8571
@ajx8571 2 жыл бұрын
Well spoken, nicely explained and much better than the recording in my class. Nice job and thank you.
@pancake5359
@pancake5359 3 жыл бұрын
Why are you so talented and brilliant?😭
@mohammedragab231
@mohammedragab231 3 жыл бұрын
Bruh a 7 minute video for free taught me more than the 1 hour lessons in school that cost us 1k a year
@rosemariegoodman4403
@rosemariegoodman4403 Ай бұрын
Totally agree. I wasteful so much time before watching this video
@coaldonelan4710
@coaldonelan4710 4 жыл бұрын
Working to understand measuring pressure in a mechanical refrigeration system. Thanks for the help Dave.
@arshadshaikh5969
@arshadshaikh5969 3 жыл бұрын
Amazing content, I love you for letting me understand this concept in such an easy manner, Subscribed
@mohammedragab231
@mohammedragab231 3 жыл бұрын
YOU'RE THE GOAT OF EXPLAINING
@1SM4h
@1SM4h Жыл бұрын
Very nice explanation! Cheers from south Brazil 🤘🏻
@logyxox1855
@logyxox1855 4 жыл бұрын
THANK YOU SO MUCH I UNDERSTOOD EVERY DETAIL🖤
@002_moh.nouvaldy5
@002_moh.nouvaldy5 4 жыл бұрын
so far, i really enjoy your explanation. hopefully, i wish you make more content in your videos. thanks
@MrUnit731
@MrUnit731 5 жыл бұрын
Hi. I found this channel because of the flat earth stuff, but I can't stop watching your videos. It's so annoying to not understand it all, but at the same time a good feeling. Thanks man ♠️
@natimanman6934
@natimanman6934 Жыл бұрын
I understood the topic I couldn't understand for 6 months thanks dave
@rachelparedes7265
@rachelparedes7265 4 жыл бұрын
this absolutely saved me, thanks so much
@bukketboi
@bukketboi Ай бұрын
DAVE I LOVE YOU THIS VIDEO SAVED ME
@ankitakashid1595
@ankitakashid1595 4 жыл бұрын
Perfect sir I really appreciate your way of teaching......
@Rituyadav-rs2nz
@Rituyadav-rs2nz 3 жыл бұрын
Understanding easily, thanku so much 💖
@grizikemo7
@grizikemo7 5 жыл бұрын
I saw the notification for this video immediately I opened it
@kanchanthakur7428
@kanchanthakur7428 4 жыл бұрын
Nice explanation
@nuramirasofeabintidzulkern5447
@nuramirasofeabintidzulkern5447 3 жыл бұрын
EXCELLENT!! THIS HELPS ME A LOT!
@S01546
@S01546 2 жыл бұрын
Simple and clear explanation. Great video. Thanks!
@bezzeone469
@bezzeone469 9 ай бұрын
Spectacular explanation 🙌🏽🙌🏽
@haninemohamed406
@haninemohamed406 5 жыл бұрын
Omgg this can't be true,I was just studying physics specifically manometers,barometers and so and I was very confused then I checked my phone to see the notification,wow
@aravshah1644
@aravshah1644 4 жыл бұрын
so it means ur a MAD
@haninemohamed406
@haninemohamed406 4 жыл бұрын
@@aravshah1644 man I don’t even remember writing this comment chill
@netad7771
@netad7771 Ай бұрын
​@@haninemohamed406 hi man u still there
@haninemohamed406
@haninemohamed406 Ай бұрын
@@netad7771 yeah final year med student lol didn't end up studying physics
@netad7771
@netad7771 Ай бұрын
@haninemohamed406 ohh good luck to you! I just started uni and we're revising everything in high school, so im here. That's awesome, I wanted to be a med student but ended up studying chemistry instead, for which I am grateful
@hanah.n1849
@hanah.n1849 4 жыл бұрын
Best explanation ever, thank you 😊
@yeshroffson
@yeshroffson Жыл бұрын
Thanks HELPFUL
@lukenavuwaivocevoce5699
@lukenavuwaivocevoce5699 3 жыл бұрын
Dude love your explanation.Thanx alot..........
@Attalla-t9b
@Attalla-t9b 7 ай бұрын
Very nice explanation of 'em!
@michaelgrimshaw1854
@michaelgrimshaw1854 4 жыл бұрын
Hi. Do you know a standalone instrument that can measure the pressure inside a hyperbaric chamber in ATA or psi. Is there a wrist worn unit that can do this. Thanks for your help.
@tanaymehta898
@tanaymehta898 3 жыл бұрын
This really helped thanks
@taestyyumyum4952
@taestyyumyum4952 Жыл бұрын
Thank you, this was really helpful.
@justinseagull3693
@justinseagull3693 5 ай бұрын
as we go to a depth in a liquid the pressure increases but why is it opposite in a barometer?
@SabinaRay-n9l
@SabinaRay-n9l 3 жыл бұрын
perfect explanation, thank you!
@1sewalker
@1sewalker 5 жыл бұрын
Excellent work. Thank you for the educational material.
@virgovirgo9367
@virgovirgo9367 5 жыл бұрын
Hi Dave! Long time.. No questions, just here to say 'hi!
@thezword669
@thezword669 4 жыл бұрын
Oof he ignored you for over a Year
@aravshah1644
@aravshah1644 4 жыл бұрын
@@thezword669 LOL Daves a failure.. dosent know the diff btwn a star n a constellation.. it shd be us who must ignore him
@christopher8199
@christopher8199 4 жыл бұрын
thank you professor dave
@geniussidona
@geniussidona 5 жыл бұрын
Did you make a mistake in saying that the density is 13.6grams.. because the unit conversions is off. (going from grams to kilograms gives you a smaller number.)
@peterphori8618
@peterphori8618 4 жыл бұрын
You explained perfectly except when you got to the part about pressure of a gas but the atmospheric pressure exerts more pressure and the subtraction which confuses me
@lorenzor.basebi9228
@lorenzor.basebi9228 2 жыл бұрын
Quick question, what happens to the levels on the right side and left side of a Utube manometer when the gas pressure reduces by for example 20 of mercury
@carultch
@carultch 2 жыл бұрын
The mercury would rise on the exposed side, and fall on the sealed side, if the external gas pressure decreased. A manometer set up to measure atmospheric pressure, would have a vacuum on the left, and exposure to the atmosphere on the right. When measuring a standard atmosphere, there would be a 760 mm difference between the mercury levels on the left and the right side. Suppose the two sides of the U, are 1 meter tall, and suppose the mercury level is 10 cm below its top on the sealed left side, when measuring a standard atmosphere. This means the right side will be 14 cm above the bottom, since the left side is 90 cm above the bottom, and 90 cm - 14 cm = 760 mm. If you take this manometer to a higher elevation, where the external pressure drops by 20 mmHg, then the mercury on the left will drop to 89 cm above the bottom, and the mercury on the right will rise to 15 cm above the bottom. The difference then, will be 74 cm, corresponding to 740 mmHg of pressure.
@lux-nocopyrightmusic
@lux-nocopyrightmusic Жыл бұрын
Great video!
@homejonny9326
@homejonny9326 3 жыл бұрын
Amazing explanation thaaaaannnks!
@mohamedalexandrani2863
@mohamedalexandrani2863 2 жыл бұрын
Can i know the name of app u use it to draw manometer
@afrifagyasiwaah
@afrifagyasiwaah 3 жыл бұрын
Please if the pressure exerted by the gas on the mercury is greater than the atmospheric pressure, does the atmospheric pressure still have an effect on the mercury to cause it to move even just a little bit?
@zoeyguitarz8593
@zoeyguitarz8593 3 жыл бұрын
Yes it does
@daniellezepess
@daniellezepess 5 жыл бұрын
Manometer: used to measure pressure Mahnamahnameter: used to measure Muppets
@scisarah3770
@scisarah3770 4 жыл бұрын
I am beyond proud of this comment.
@karinas.1320
@karinas.1320 3 жыл бұрын
But in the closed-end manometer, what gas is above the liquid on the right side? Doesn't the pressure exerted by the gas in the vessel then also depend on the gas exerted by the gas on the right?
@ProfessorDaveExplains
@ProfessorDaveExplains 3 жыл бұрын
I believe it's a vacuum on the other end so there is no other pressure to factor in.
@karinas.1320
@karinas.1320 3 жыл бұрын
@@ProfessorDaveExplains Ok thank you Dave! 😌
@benYaakov
@benYaakov 3 жыл бұрын
Thanks very much It helped me .
@maximilliansantiago5208
@maximilliansantiago5208 2 жыл бұрын
Hey professor dave! I have loved your videos for a really long time, they helped me ace chemistry and physics. Question for you. I work in a brewery and my co worker and I were discussing pressure of a closed system. Our fermentors have a sealable door and a pressure gauge that reads between 0-30psi. We were discussing why, if at sea level 1 atm/14psi of pressure is acting on us due to atmosphere, why when do you seal a tank does it not have 14 psi worth of captured pressure and read at 14 psi. My coworker thought it was additive and that it is 1 atm + what ever additional pressure you add to the tank. So effectively the gauge is tarred at 1 atm. My thoughts are that the diaphragm pressure gauges are not designed to translate barometric pressure into something readable on the tank and thus only when you have a fluid or added gas to the tank do you see the translation to a reading on the gauge. From this video i would think that then if we were to use a manometer that we would see that 1 atm of pressure acting on the fluid in the manometer?
@carultch
@carultch 2 жыл бұрын
Unless there is a specific reason you would need a gauge that reads absolute pressure, most pressure gauges are built to display the vented gauge pressure, rather than absolute pressure, since it is much more economical to make a gauge for vented gauge pressure relative to the background atmosphere, than one for absolute pressure. It is the entire reason why a gauge is the namesake of gauge pressure. So this means that whatever pressure you measure on the gauge, is really that plus 14.7 psi that you'd need to use in any equation that depends on absolute pressure. If you used a manometer with a vacuum on one side, you'd have an absolute pressure measurement device.
@Crescendo_theGreat
@Crescendo_theGreat Жыл бұрын
thanks professor Dave :)
@shrishri1522
@shrishri1522 3 жыл бұрын
Good one!
@homosapiensqp3225
@homosapiensqp3225 5 жыл бұрын
2:10 density of water 0.997? At which temperature and pressure?
@LegallyMaking
@LegallyMaking Жыл бұрын
It is 1 g/cc at 4 degree celsius , hence when the temperature changes it also changes
@yahiatutuncu7508
@yahiatutuncu7508 3 жыл бұрын
Isn't the Hydrostatic pressure also called Manometric pressure?
@justinxin8733
@justinxin8733 3 жыл бұрын
Thanks, got my igcse physics test next Wednesday
@preciousoh705
@preciousoh705 3 жыл бұрын
Did you pass?
@justinxin8733
@justinxin8733 3 жыл бұрын
@@preciousoh705 Don't know yet, it requires at least one month to receive the result.
@preciousoh705
@preciousoh705 3 жыл бұрын
@@justinxin8733 Oh I see. I'm rooting for you, stranger on the internet 😂
@justinxin8733
@justinxin8733 3 жыл бұрын
@@preciousoh705 Thank you! I hope you have a wonderful day! Stranger on the internet 😊
@maria2k5
@maria2k5 3 жыл бұрын
o levels or a levels?
@burj_knowledge
@burj_knowledge 11 ай бұрын
Thank youuu❤
@sangeetajinder7688
@sangeetajinder7688 5 ай бұрын
6:55 why do we add?
@gamer_sandesh
@gamer_sandesh 10 күн бұрын
Because atmosphere pressure applied on the hg
@andyk139
@andyk139 3 жыл бұрын
I LOVE THIS
@geraldpabello2750
@geraldpabello2750 Жыл бұрын
thanks prof
@emmanuelmeshuko1416
@emmanuelmeshuko1416 3 жыл бұрын
Thank you sooooo much
@erikburzinski8248
@erikburzinski8248 5 жыл бұрын
professor Dave I have just noticed that if you search up how estrogen stops growth you get no results actually explaining how estrogen speeds up your bone age. I would highly appreciate if you were to rectify this issue on KZbin as I think it would make an interesting video and no one else appease to have made a video explaining this.
@miss.vickies
@miss.vickies 2 жыл бұрын
thanks so much!!
@stephenhill8790
@stephenhill8790 9 ай бұрын
I wish you had done an anaroid barometer as well 🧐
@henryhsil8630
@henryhsil8630 4 жыл бұрын
It was wonderful thanks
@subashnayak719
@subashnayak719 4 жыл бұрын
thank you sir
@aravshah1644
@aravshah1644 4 жыл бұрын
yay indian!!!!
@aravshah1644
@aravshah1644 4 жыл бұрын
..
@vicallday3325
@vicallday3325 3 жыл бұрын
great vid
@jranoco4382
@jranoco4382 4 жыл бұрын
So helpful
@Crystalrosety
@Crystalrosety 4 жыл бұрын
Thank u prof. You look good btw
@anilsharma-ev2my
@anilsharma-ev2my 4 жыл бұрын
What is efficiency of barometer Aniroid barometer
@aravshah1644
@aravshah1644 4 жыл бұрын
are bhai.. indian hai na.. indians ki iss amrici channel pe mat uda re.. sale delete kr
@anilsharma-ev2my
@anilsharma-ev2my 4 жыл бұрын
@@aravshah1644 arey bhai kahana kya chahtey ho??
@peddaraveedumarkapurrural8229
@peddaraveedumarkapurrural8229 3 жыл бұрын
Which accent is speaker speaking? Can anyone please reply
@ProfessorDaveExplains
@ProfessorDaveExplains 3 жыл бұрын
I'm American.
@阿尔吉侬-v6b
@阿尔吉侬-v6b 3 жыл бұрын
哈哈哈,不好好学化学就得半夜自学了TT
@LegallyMaking
@LegallyMaking Жыл бұрын
Bruh it is fluid mechanics
@jamalelouafi5985
@jamalelouafi5985 5 жыл бұрын
In maths, why do you not show how do we get the answer?
@manojbhardwaj5400
@manojbhardwaj5400 5 жыл бұрын
Please upload vedio about particle physics gauge theory plz asap
@dareen3295
@dareen3295 5 жыл бұрын
vedio
@ayeshaiqbal8459
@ayeshaiqbal8459 2 жыл бұрын
2:33
@michaelkumirai7025
@michaelkumirai7025 Ай бұрын
Why
@rudeus8750
@rudeus8750 5 ай бұрын
he changed his hair
@anilkumarsharma8901
@anilkumarsharma8901 2 жыл бұрын
Make a barometer holding one crore litres of💧💧💧 water💧💦 so it's become a great👍 source of🔌 energy⚡⚡⚡⚡ forever😁😁😁😁
@kuntalkoley3107
@kuntalkoley3107 5 жыл бұрын
Let's check the blood pressure
@aravshah1644
@aravshah1644 4 жыл бұрын
SphygmoMANOMETER... gotcha!!!!
@jetx_47
@jetx_47 2 жыл бұрын
Mahna Mahna!
@mor7510
@mor7510 3 жыл бұрын
you look so good with your short hair haha
@rawansami4435
@rawansami4435 4 жыл бұрын
Hi layan😂💜💜
@layan2444
@layan2444 4 жыл бұрын
Heyyy rawan😂😂
@rawansami4435
@rawansami4435 4 жыл бұрын
Layanz charmz hi hru??😂💜💜
@layan2444
@layan2444 4 жыл бұрын
BTS Forever not that good,bcs we have physics in like 5 minutes
@rawansami4435
@rawansami4435 4 жыл бұрын
Layanz charmz yeah me too I’m not happy
@jasminefitzsimons896
@jasminefitzsimons896 2 жыл бұрын
ILOVEU
@anilkumarsharma8901
@anilkumarsharma8901 2 жыл бұрын
One crore litres volume barometer produced how much pressure for making electric🔌⚡ power💪⚡ forever😁😁😁
@TimOsman
@TimOsman 5 жыл бұрын
Yea but you can't have pressure without a container, it breaks the 2nd law of thermodynamics. Prove we can have pressure. -Nathan Oakley's message INCOMING
@ProfessorDaveExplains
@ProfessorDaveExplains 5 жыл бұрын
The atmosphere is attracted to earth due to gravity. There is nothing about this that violates thermodynamics whatsoever.
@TimOsman
@TimOsman 5 жыл бұрын
@@ProfessorDaveExplains I actually don't deny that. Flat earthers are obviously denying gravity, but bring the second law of thermodynamics in to explain the definition of gas pressure "force exerts on walls of container", so they end up saying there is a dome lol. Doesn't the second law apply to isolated systems only? What type of system is earth, it seems like sources vary.
@carultch
@carultch 2 жыл бұрын
@@TimOsman The second law of thermodynamics applies *in general*, it is just that it is easier to explain it for isolated systems when first introducing it. So stating it in the form of "isolated systems cannot decrease in their entropy", allows us to demonstrate this with examples where half the system gains entropy, the other half decreases in entropy, and the system as a whole increases in entropy. Using an isolated system as an example, allows us to put aside entropy exchange with the surroundings, and focus on what happens in the system alone. The most generalized form of the second law of thermodynamics, is as follows: The entropy of the universe cannot decrease The universe is ultimately an isolated system as far as we know, so that means any entropy generated in a given process, must go somewhere, and cannot cease to exist. Entropy of the universe can remain unchanged due to the special case of a reversible process, but it cannot decrease.
@carultch
@carultch 2 жыл бұрын
@@TimOsman Earth ultimately is an open system. The reason you get conflicting answers on this, is that for the most part, it is close enough to a closed system that you can neglect mass transfer due to whatever we gain from meteors, lose from solar wind, or lose from manmade spaceflight activity. The Earth certainly isn't an isolated system, because it gains heat from the sunlight, and radiates heat away to the cosmic background (the entire reason it cools off at night). The radiation heat transfer to the cosmic background, is what enables Earth to transfer entropy away to the rest of the universe.
@markedwards5289
@markedwards5289 5 жыл бұрын
Thank you for sharing this great explanation I know a few flattards that need to learn about this stuff lol
@MrUnit731
@MrUnit731 5 жыл бұрын
Wow. Do you really know someone like that? I had a feeling they were not real. Like god or something.
@anilkumarsharma8901
@anilkumarsharma8901 2 жыл бұрын
If we used one crore manometer and a common output for all of them so it's become a great source for energy⚡ or not 🤣🤣🤣🤣
@anilsharma-ev2my
@anilsharma-ev2my 4 жыл бұрын
Put a turbine which is used in sea in this big model so we got a fresh distilled water turbine and very cheap source of energy for free
@rassimsimou1594
@rassimsimou1594 10 ай бұрын
G😊😊d
@RahmanAdekunle-qz6ud
@RahmanAdekunle-qz6ud Жыл бұрын
Gteat🎉
@LegallyMaking
@LegallyMaking Жыл бұрын
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