Pressure and the simple mercury barometer | Physical Processes | MCAT | Khan Academy

Created by Ryan Scott Patton.
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[@scribbleyourlife]

I like it how you explain slowly and clearly! I understand it now :D Ty

[@khadijakhan1941]

Woah! That was amazing 👍🏻

[@arushisingh930]

Thank you! Finally understood how the barometer works

[@raghdafathy3874]

It's really helpful thank you👌

[@Dannijay16]

excellent video!

[@dameson8521]

Thanks alot keep going and uploading in youtube

[@mohammedshafat2252]

thank you, it helped me

[@romin8825]

Wow thanks man

[@khushi-gn1zz]

thanks...

[@hongthu4170]

You try to give the video more brightness it will be great if you do

[@larryscott3982]

The unit of choice is hPa. Hecto Pascal. One ATM is 1013 HPa. Which is the same as mB millibar. I have not seen mm Hg very often.

[@KelfranGt]

Why are there no atmospheric pressure acting on top of the tube? the glass tube can't just cancel the air on top of it right. Because if so, this wouldn't work

[@khadijakhan1941]

There is no air on the top of the tube, it's vacuum.

[@khushi-gn1zz]

0:22 i know that

[@nukinthison]

Shouldn't it be 101'325 Pa or 101,325 kPa? I'm a little cofused. I tried to calculate the air pressure like Torricelli did. My calculation was P(0.76m) = 0.76m * 13.6 (kg/m^3) * 9.81 (m/s^2) my result was 101,39616 Pa. I don't know what I did wrong...

[@sarahazad3925]

Yeah I had the same question, should be kPa

[@saniaazhmeebhuiyan2693]

no obviously not see .76m=760 mm lol

[@saniaazhmeebhuiyan2693]

oh damn u many nt need my ans its actually 2 yrs ago ..

[@larryscott3982]

1013 hPa is 760 torr

[@robotindisguise8357]

Nerd

[@vannguyen-ky3dc]

You try to give the video more brightness it will be great if you do