The history of the barometer (and how it works) - Asaf Bar-Yosef

View full lesson: ed.ted.com/lessons/the-history...
A barometer is an instrument that measures air pressure, allowing weather forecasters and scientists to better predict extreme weather events. Despite its incredible usefulness, inventing the barometer was no walk in the park. Asaf Bar-Yosef describes the series of scientists and events that contributed to the birth of the barometer -- and explains how it actually works.
Lesson by Asaf Bar-Yosef, animation by Reflective Films.

[@Tombee2]

2:41 instead of a light bulb there is a candle which is historically accurate.

[@FluodioCin]

=)))))

[@booklover-hu9tw]

😂😂😂

[@Fulikia]

damn didnt realized that

[@shashikalaraju5769]

bulls eye.

[@aninditamukherjee8149]

True!

[@GuillotinedChemistry]

This is definitely one the best video I've found on barometers. Really nice job on explaining misconceptions about vacuums.

[@huzaifaarshadabbasi8744]

👍🏻

[@Sevalithi]

Oh these little scientist dudes are so cute!

[@satire9298]

No homo?

[@Sevalithi]

He feels like he needs a disclaimer whenever he compliments guys. Probably because he's not secure in his own sexuality.

[@marafradella2712]

Thank you!

[@intelX1000]

Kyle Sanchez
This is what's called 'projecting'.
You always check if your projection is correct before stating it, or you'll look like Kyle, the liberal.

[@timlang3852]

Kyle Sanchez o

[@kirstenkoch5920]

By far the best and simplest explanation I've seen. Good job with the graphics too!

[@smitasuhas7981]

I have experimented this with mug in bath tub (Some Indians can relate)

[@a.kzestos2085]

True

[@yashrathi6862]

the height of the water level at ground level is close to 9 meters, you can't do it with a mug unless you do it on high terrain.

[@shaunakn5881]

True lol

[@askhfbfns67589]

not Indian but i can relaten lol

[@RandomDudes710]

I think that's what we call a faulty barometer or just not a barometer at all

[@amyannaroy8357]

good job with the graphics and explanation....

[@cbomb002]

So weird, I actually have 2 notifications right now.

[@farzanaqalandari5615]

Pop

[@kilney2418]

Evangelista torricelli

[@MalaysianTropikfusion]

I have to say, the characters in this animation are the cutest I've seen so far. Love it!

[@arushi4335]

😊😊

[@meghanakankara2883]

Thanks for this video. I have been suffering to understand this concept but none was working but now this video with the explanation of the barometer and its history with splendid animation have helped not only me but many other students to understand the complexity and art of learning science. Thank you!

[@MelihCANBOLAT]

3:23 The height should be measured from the surface of the liquid

[@Simon-mr6zy]

yes!

[@harsh2032]

good eyes sire!

[@terenceting26]

I had that question, thanks for confirming. Ted-ed should at least pin this comment. The graphical designers might not understand this.

[@eljison]

Not necessarily. You just need to measure the change in height from any known reference point. If you start with liquid (water or mercury) in the tube, you can make that the zero and calibrate it whatever pressure you want (1 atm, for example), then measure the height relative to that reference point.

[@hassaan1670]

thanks, i was wondering

[@ChanchalKotal]

This is my favorite channel so far because of the explanation and animation of each video. They are too good! Thank you Ted-Ed!

[@raniahussein7002]

I am from iraq,,,,I like this way to understand information in study,,,,,,great video

[@atiqueahmad3058]

Rania Hussein o

[@moej3386]

@@PhartingFeeting exactly-

[@xOxAdnanxOx]

Moe J what made you’ll go uncomfortable with it? lol

[@KaramYagan]

@@xOxAdnanxOx Chill. They are just pointing out that it is incorrect to use them this way. She should have put dots instead of commas, but.... Mehhh

[@twitwilight6087]

Hi Rania I'm pretty sure that you were in your first year in high school and having a trouble with studying physics and barometer when you wrote this comment, the same thing is happening 😂😂💔

[@Blarmy_Korea]

Totally helpful! I was confused abt the barometer but saw this video and understood everything.. Thank you

[@maulikshah28]

Great video, helped me understand the topic really well

[@malv4935]

This is awesome and so adorable, thank you :D

[@jeremiahyolok6663]

very good and clearly explained

[@VVVV11995]

HOW INTERESTING! THANK YOU

[@kaushikpawar7508]

Amazing work team💯

[@nathanchen5375]

Fantastic explanation!

[@abdulmalikalghazali8241]

I like the way how you make it easy to understand by making it enjoyable

[@alligrim]

Ted Ed saves my butt in my chem honors class every unit.

[@boofang10]

EXCELLENT video on the background of the barometer, especially the mercury barometer

[@n8mail76]

thanks. must of us have only memorized these concepts taught to us. learning the mechanics behind how and why the concepts were developed bring a deeper understanding of the concepts.

[@Shinywhite]

Very good explanation, tyvm.

[@hemanjalihemanjali2896]

nice to understand easily

[@AliAli-qc8zj]

Excellent information on how to estimate the atmospheric pressure.

[@kokioto420]

I'm so thankful Ted Ed had a video on this, I needed this for my homework and this makes my homework more fun!

[@awasthiatul51]

thank you.. very nice exlanation

[@rawanreda6908]

That was really good !!

[@MukeshKumar-zv1wk]

fantastic way to learn

[@melashop669]

el vídeo que necesitaba ver, muchas gracias

[@FailCant]

Truly fascinating

[@manallarrehemi5838]

I totally agree that the thinking outside the box " the tube " is always the right way to find solutions , even if the others do not agree with you
THANKS FOR THIS VIDEO 🥰

[@31896eneri]

Great story!

[@baharosman1416]

Thank you!!❤️❤️❤️

[@nileshvishvambhar6780]

It was Best explanation...
Thankyou

[@unskilled_i_guess]

this helped so much

[@priyankabhardwaj4590]

ted ed is the best!

[@gurbakshkaur1213]

Its very helpful.😊

[@salmamuhamed5728]

Great in a cute way. Love it. 👍

[@tueanhvu1627]

I can't understand the experiment until this. Thanks =)))

[@abderrahimelboutaybi9018]

Thank you. Very clear and great explanation.

[@vanshikha7179]

amazingly explained!

[@samspiker3901]

Thank you for the video

[@sayemshahariaprethebe]

Thank you so much

[@billchoi2000lsc]

I love stories about challenging pre-existing theory and making major scientific breakthrough!!

[@jchae9820]

thanks sir!! very useful actually

[@Pineapple_extract]

Great explaination

[@garydunken7934]

As usual, nice one TED! My 3 observations in this video:
1. At 1:34 Gasparo Berti pulled his idea from his arse, literally! Thanks for the funny animation.
2. Both Aristotle and Galileo behaved like jerks with regards to their knowledge of vacuum, albeit being good in other areas.
3. How brilliant both Gasparo Berti and Evangelista Torricelli were, for thinking outside the box (or tube like you mentioned in the video!)

[@PhysicsVlogs]

hahah u're right..

[@crashsitetube]

People also had a lot shorter legs back then. Between the Rubenesque women and short-legged men, it''s a wonder the human race has survived. But, enough inane silliness. Really good video. Thanks.

[@anugopan5]

CORRECT

[@dhanyak.j9618]

Awesome 😊😁😊😁😁😁😁😊😁😊😊😊👍

[@dhanyak.j9618]

Good morning. Good night. Good for the video 👍

[@prashant.timilsina]

always such a wholesome videos✨

[@novachan69]

Thanks dude u cleared my doubts

[@theagent3551]

Thank you so much!

[@smoothieturtle5005]

thanks for the help

[@jp4431]

So much knowledge we take for granted today were such brilliant discoveries back then

[@youngwildandcarefree]

thank you for the help

[@zaoshmakujina2215]

This cleared my doubts which arised in the chapter Mechanical properties of fluids thank u

[@superrandomuser]

same

[@janvigupta558]

Thanku so much this is really helpful🤗

[@neethandwrittennotes6196]

Thank you !!

[@vinitaugaonkar4683]

it was fun and learned easily

[@TanvirAhmedSakib]

Awesome!!!

[@divachauhan7491]

Nice work

[@strider8050]

Thanks so much❤

[@artpage6546]

thank you so much!!!

[@kottananarasimhanaidu4851]

Good job

[@piggyparadiseplayz395]

This is a great video! thanks for the information!

[@user-fu6jb8df3o]

Thanks, I love it

[@PhilippKirchner]

Well made, and such nice animations ^-^

[@marafradella2712]

Thank you Philipp!

[@popogast]

Nice and descriptive explanation.Well done.

[@dunnuthalayellareddy7618]

Thank you sir

[@ceff01]

These are on planes for decision height altitude for anp/rnp landings in low visibility around mountainous areas

[@AbdulRazzak-sh8ks]

Very very thankful

[@amrh2688]

C très bien expliqué merci

[@yashchaudhary9596]

I understood the concept of barometer bec of your video. THANKS

[@tejasnimbkar694]

TED-ED team can you also make a you-tube video on Calculus
Just beginning of it. It would be great

[@AbidHasan-tg7jo]

3:23 the 76 cm height should be measured from the surface of the water.

[@STAR.C455]

I’m a little princess 👸

[@STAR.C455]

Hi

[@wonderman8537]

Bye

[@Sama-pl2pz]

Ya... Good observation🤝

[@Gojoft.sukuna]

True

[@priyalks1614]

its so so so lively and understandable
pls try your luck in many more topics

[@anubiswerelupe]

there is actually a question about barometers that I have been wondering.
Do you need to add water to a barometer over time?
I have had the same barometer for many years and only filled it up when I first got it. Over time, water has dribbled out of the spout during days with very low pressure. The barometer never seems to run out of water and keeps dribbling now and then. Do I need to add more water to it now and then?

[@chow143]

Extremely helpful

[@NullNoxproduction]

I like these videos, so informative.

[@mdabdulkafimia]

Thanks a lot

[@davidbooth3285]

Loved the way Torricelli had his lightbulb moment with a candle!!

[@farahmohumad5355]

sweet topic

[@le_flos01]

Awesome vid

[@youssefmohamedhassen8635]

Nice video

[@shaziajehanzaib941]

Awesome animation and explanation

[@patriciayokelin9382]

I love the graphics of this video, the scientists are so cute!

[@nipuntheekshana6817]

wuu man this sounds great.. thank you😙

[@michaela9914]

Lovely explanation

[@drlefebvre8489]

Michaela what is mmhg

[@Jordan_Dossou]

@@drlefebvre8489 millimeters of Mercury

[@quriositysquared1028]

Thank you

[@russel4942]

This really helps a lot and well-explained compared in schools

[@hansbastv3873]

훌륭합니다.

[@ultratuya2324]

Thanks ❤

[@93mrravi]

Beautiful explanation!

[@angelicamariabuitrago7492]

thanks !!

[@dalambert4090]

i would like to see this mercury barometer with vacuum demonstrated , inverting the tube under mercury.

[@MuhammadIqbal-dy5ks]

Nice way of teaching 😊😊

[@MuhammadIqbal-dy5ks]

Good

[@hannahhoag8571]

This is fascinating!

[@aaryanpotdar225]

:-) Very helpful indeed!!!

[@Evan_Adams]

So.... what happened after 2007? How do we do it now?

[@stephensnell5707]

If you aren't aware Aneroid Barometers are now used and will be forever

[@aifan6148]

The animation is so cute ♡
Wish the real-life scientists were as cute.. ♡

[@muhittinselcukgoksu1327]

the other TED videos are not so ..They are very well.