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
@griffinmachayi50782 ай бұрын
Thank you so much.
@FlawzyOSRS3 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.
@ljbrown33113 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 :)
@ajx85712 жыл бұрын
Well spoken, nicely explained and much better than the recording in my class. Nice job and thank you.
@pancake53593 жыл бұрын
Why are you so talented and brilliant?😭
@mohammedragab2313 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
@rosemariegoodman4403Ай бұрын
Totally agree. I wasteful so much time before watching this video
@coaldonelan47104 жыл бұрын
Working to understand measuring pressure in a mechanical refrigeration system. Thanks for the help Dave.
@arshadshaikh59693 жыл бұрын
Amazing content, I love you for letting me understand this concept in such an easy manner, Subscribed
@mohammedragab2313 жыл бұрын
YOU'RE THE GOAT OF EXPLAINING
@1SM4h Жыл бұрын
Very nice explanation! Cheers from south Brazil 🤘🏻
@logyxox18554 жыл бұрын
THANK YOU SO MUCH I UNDERSTOOD EVERY DETAIL🖤
@002_moh.nouvaldy54 жыл бұрын
so far, i really enjoy your explanation. hopefully, i wish you make more content in your videos. thanks
@MrUnit7315 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 Жыл бұрын
I understood the topic I couldn't understand for 6 months thanks dave
@rachelparedes72654 жыл бұрын
this absolutely saved me, thanks so much
@bukketboiАй бұрын
DAVE I LOVE YOU THIS VIDEO SAVED ME
@ankitakashid15954 жыл бұрын
Perfect sir I really appreciate your way of teaching......
@Rituyadav-rs2nz3 жыл бұрын
Understanding easily, thanku so much 💖
@grizikemo75 жыл бұрын
I saw the notification for this video immediately I opened it
@kanchanthakur74284 жыл бұрын
Nice explanation
@nuramirasofeabintidzulkern54473 жыл бұрын
EXCELLENT!! THIS HELPS ME A LOT!
@S015462 жыл бұрын
Simple and clear explanation. Great video. Thanks!
@bezzeone4699 ай бұрын
Spectacular explanation 🙌🏽🙌🏽
@haninemohamed4065 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
@aravshah16444 жыл бұрын
so it means ur a MAD
@haninemohamed4064 жыл бұрын
@@aravshah1644 man I don’t even remember writing this comment chill
@netad7771Ай бұрын
@@haninemohamed406 hi man u still there
@haninemohamed406Ай бұрын
@@netad7771 yeah final year med student lol didn't end up studying physics
@netad7771Ай 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.n18494 жыл бұрын
Best explanation ever, thank you 😊
@yeshroffson Жыл бұрын
Thanks HELPFUL
@lukenavuwaivocevoce56993 жыл бұрын
Dude love your explanation.Thanx alot..........
@Attalla-t9b7 ай бұрын
Very nice explanation of 'em!
@michaelgrimshaw18544 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.
@tanaymehta8983 жыл бұрын
This really helped thanks
@taestyyumyum4952 Жыл бұрын
Thank you, this was really helpful.
@justinseagull36935 ай бұрын
as we go to a depth in a liquid the pressure increases but why is it opposite in a barometer?
@SabinaRay-n9l3 жыл бұрын
perfect explanation, thank you!
@1sewalker5 жыл бұрын
Excellent work. Thank you for the educational material.
@virgovirgo93675 жыл бұрын
Hi Dave! Long time.. No questions, just here to say 'hi!
@thezword6694 жыл бұрын
Oof he ignored you for over a Year
@aravshah16444 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
@christopher81994 жыл бұрын
thank you professor dave
@geniussidona5 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.)
@peterphori86184 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.basebi92282 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
@carultch2 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 Жыл бұрын
Great video!
@homejonny93263 жыл бұрын
Amazing explanation thaaaaannnks!
@mohamedalexandrani28632 жыл бұрын
Can i know the name of app u use it to draw manometer
@afrifagyasiwaah3 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?
@zoeyguitarz85933 жыл бұрын
Yes it does
@daniellezepess5 жыл бұрын
Manometer: used to measure pressure Mahnamahnameter: used to measure Muppets
@scisarah37704 жыл бұрын
I am beyond proud of this comment.
@karinas.13203 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?
@ProfessorDaveExplains3 жыл бұрын
I believe it's a vacuum on the other end so there is no other pressure to factor in.
@karinas.13203 жыл бұрын
@@ProfessorDaveExplains Ok thank you Dave! 😌
@benYaakov3 жыл бұрын
Thanks very much It helped me .
@maximilliansantiago52082 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?
@carultch2 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 Жыл бұрын
thanks professor Dave :)
@shrishri15223 жыл бұрын
Good one!
@homosapiensqp32255 жыл бұрын
2:10 density of water 0.997? At which temperature and pressure?
@LegallyMaking Жыл бұрын
It is 1 g/cc at 4 degree celsius , hence when the temperature changes it also changes
@yahiatutuncu75083 жыл бұрын
Isn't the Hydrostatic pressure also called Manometric pressure?
@justinxin87333 жыл бұрын
Thanks, got my igcse physics test next Wednesday
@preciousoh7053 жыл бұрын
Did you pass?
@justinxin87333 жыл бұрын
@@preciousoh705 Don't know yet, it requires at least one month to receive the result.
@preciousoh7053 жыл бұрын
@@justinxin8733 Oh I see. I'm rooting for you, stranger on the internet 😂
@justinxin87333 жыл бұрын
@@preciousoh705 Thank you! I hope you have a wonderful day! Stranger on the internet 😊
@maria2k53 жыл бұрын
o levels or a levels?
@burj_knowledge11 ай бұрын
Thank youuu❤
@sangeetajinder76885 ай бұрын
6:55 why do we add?
@gamer_sandesh10 күн бұрын
Because atmosphere pressure applied on the hg
@andyk1393 жыл бұрын
I LOVE THIS
@geraldpabello2750 Жыл бұрын
thanks prof
@emmanuelmeshuko14163 жыл бұрын
Thank you sooooo much
@erikburzinski82485 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.vickies2 жыл бұрын
thanks so much!!
@stephenhill87909 ай бұрын
I wish you had done an anaroid barometer as well 🧐
@henryhsil86304 жыл бұрын
It was wonderful thanks
@subashnayak7194 жыл бұрын
thank you sir
@aravshah16444 жыл бұрын
yay indian!!!!
@aravshah16444 жыл бұрын
..
@vicallday33253 жыл бұрын
great vid
@jranoco43824 жыл бұрын
So helpful
@Crystalrosety4 жыл бұрын
Thank u prof. You look good btw
@anilsharma-ev2my4 жыл бұрын
What is efficiency of barometer Aniroid barometer
@aravshah16444 жыл бұрын
are bhai.. indian hai na.. indians ki iss amrici channel pe mat uda re.. sale delete kr
@anilsharma-ev2my4 жыл бұрын
@@aravshah1644 arey bhai kahana kya chahtey ho??
@peddaraveedumarkapurrural82293 жыл бұрын
Which accent is speaker speaking? Can anyone please reply
@ProfessorDaveExplains3 жыл бұрын
I'm American.
@阿尔吉侬-v6b3 жыл бұрын
哈哈哈,不好好学化学就得半夜自学了TT
@LegallyMaking Жыл бұрын
Bruh it is fluid mechanics
@jamalelouafi59855 жыл бұрын
In maths, why do you not show how do we get the answer?
@manojbhardwaj54005 жыл бұрын
Please upload vedio about particle physics gauge theory plz asap
@dareen32955 жыл бұрын
vedio
@ayeshaiqbal84592 жыл бұрын
2:33
@michaelkumirai7025Ай бұрын
Why
@rudeus87505 ай бұрын
he changed his hair
@anilkumarsharma89012 жыл бұрын
Make a barometer holding one crore litres of💧💧💧 water💧💦 so it's become a great👍 source of🔌 energy⚡⚡⚡⚡ forever😁😁😁😁
@kuntalkoley31075 жыл бұрын
Let's check the blood pressure
@aravshah16444 жыл бұрын
SphygmoMANOMETER... gotcha!!!!
@jetx_472 жыл бұрын
Mahna Mahna!
@mor75103 жыл бұрын
you look so good with your short hair haha
@rawansami44354 жыл бұрын
Hi layan😂💜💜
@layan24444 жыл бұрын
Heyyy rawan😂😂
@rawansami44354 жыл бұрын
Layanz charmz hi hru??😂💜💜
@layan24444 жыл бұрын
BTS Forever not that good,bcs we have physics in like 5 minutes
@rawansami44354 жыл бұрын
Layanz charmz yeah me too I’m not happy
@jasminefitzsimons8962 жыл бұрын
ILOVEU
@anilkumarsharma89012 жыл бұрын
One crore litres volume barometer produced how much pressure for making electric🔌⚡ power💪⚡ forever😁😁😁
@TimOsman5 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
@ProfessorDaveExplains5 жыл бұрын
The atmosphere is attracted to earth due to gravity. There is nothing about this that violates thermodynamics whatsoever.
@TimOsman5 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.
@carultch2 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.
@carultch2 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.
@markedwards52895 жыл бұрын
Thank you for sharing this great explanation I know a few flattards that need to learn about this stuff lol
@MrUnit7315 жыл бұрын
Wow. Do you really know someone like that? I had a feeling they were not real. Like god or something.
@anilkumarsharma89012 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-ev2my4 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