Absolute humidity, Relative humidity and Dew point - V.2

Ever wonder why the grass has dew on it some days but not others? Do you want to know why fog and clouds seem to appear out of thin air? Absolute humidity, relative humidity and dew point help to explain these phenomenon.


Image credits and attribution:
Hygrometer
Attribution-ShareAlike 4.0 International

Clouds


Dew on grass
CC0 1.0 Public Domain

Rain
Public domain photograph of rain, free to use, no copyright restrictions image - Picryl description

Thermometers - Winter and summer temperatures ai. (I separated the two original thermometers which were in one image)

Ruth Hartnup
Sunny Day at Alpha Lake Park

[robschreffler]

You, my friend, are a natural teacher. Your videos are reaching all types of students for different career fields. Keep up the great work.

[VarunVyas]

Here in India its beginning of Monsoon season and Relative humidity is around 80%. Now i know why it feels Sticky/Muddy these days. Amazing Explanation! Thanks so much! :) :)

[Elephantine]

This is the best explanation I've seen of these kind of hard to understand concepts. 👍

[joeeilert]

Nice video. I think the concept could be taught alternatively using sponges of different sizes. A large sponge would be hot air while a small sponge would be cold air. You can pour the same amount of water into each sponge and show how the small one reaches 100% relative humidity first and starts leaking water back out.

[RohithJaya]

Thank you so much. i hope you dont stop making these videos. you are an amazing teacher!!

[macky]

As an avgeek ive often heard ATC inform pilots of dew point. I never fully understood what it meant, now i do, thanks 👍

[lehmejoun]

Thank you so much, I remember watching several videos around 2 years back without fully understanding the subject, the visual guides were very helpful to understand it, thank you.

[skywater]

He explains it very good. Easy to follow and to understand!

[giovishow]

Great video! Do more of these, please!

[DANGJOS]

Nice! What I appreciate is that you seem careful with your words and don't say the common (and incorrect) how much water the air can "hold". The air doesn't hold the water vapor; the water vapor exists in the vapor state in the air. And in theory, even if there were no air at all, those same 15 grams would exist per cubic meter at 17 C. It's all about equilibrium between the liquid and gaseous state.

It just goes to show that one can teach a concept in a simplified manner without being grossly misleading 👍👍

[enecan]

Thanks for explaining. Ya know ive always struggled in my car when the windows fog up on the inside for exactly what I should do to unfog them. On the practical side what do we do? On a hot day when you have the AC on blast, the windows fog. On a cold wintery wet day, with heat on, it fogs. how do you know what to do to unfog the window? heat? cold? open windows? feel i always try everything and never know what it was that worked.

[gordonc]

I like how he explains it so easily so as people as dumb as me can understand. Maybe he once was as dumb as me

[Metal_Master_YT]

Wow, that's so weird, the old link to the video is gone now, and I can't reply to your comment you made to me on that video, did you take down the video and make a new one? because that would explain it.

[pilotalex]

Very nice and good video, although I have one remark. When vapor water is turned into liquid water it is not called condensation (which is a perpetuated misused term) it is actually called liquefaction.
Condensation occurs when vapor (or gaz) becomes directly solid without passing thru the liquid form.
Just to say ...
Thank you for the content and keep up the good work 👍