The Science of Ventilation

[@sinakhaleghi7919]

It was truly interesting. I liked how it showed and explained the application of fluid dynamics and heat transfer in our daily lives.

[@coco_coco]

Excellent!!!! Thanks for explaining with an experiment, all explanations should be like this... (if schools/universities were like this)

[@rockystonewolf]

Well done guys! Interesting subject explained in a very ordinary, everyday language everyone can understand.

[@eco1969]

really, really good video, very informative and explains in such a way its easy to comprehend

[@JollywoodJoel]

This video was great and easy to understand. Maybe next video will teach us that water is wet.

[@timknight5105]

Would have been interesting to stick something cold into the dust particles and see the airflow then sink.

[@pandapan5797]

Really great video. Thank you

[@binhminh417]

Thank you!

[@Nhanhatnho]

Yes, the proof is very interesting, however, once we know such a principle, how can we get all this fine dust out of the house? It would be interesting if you could experiment with what I said. Thanks for the video!

[@mechantgarcon6262]

Very nice! Like to see more on this subject.

[@chassisblanc9480]

TRès belle analyse monsieur ! mais comment transformer l'air chaud de l'étage en air froid !!!!!? Cordialement ,

[@ChinhNguyen-yb3cp]

Bài giảng hay, cám ơn bạn.

[@trazyntheinfinite9895]

"Dust you room boi! BUT MOOOOM, im doing science

[@neoruss3553]

what about the air below the hand. It should go down right? But only cold air is going down. Something doesn't add up.

[@the_interim]

The air below the hand would "rise" too if the hand was hot enough. It goes up. Everything does add up.

[@neoruss3553]

​@@the_interim If heated object repels particles in all directions( or gives them energy in other words) then air particles below the hand should be repelled downwards no?

[@lakshmichaudhary3650]

​@neoruss3553 it is not repelled,the air gets warm, and warm air rises upward as it's lighter than normal air.

[@migyl]

@@neoruss3553heated objects do not repel things away. It simply heats up the space around it. Particles within that heated space then rise up. If the hand heats up the space underneath it, then the particles under it will rise up because they’re heated.

[@odinsonic]

wow wow wow

[@rivank5596]

So my chances of getting COVID-19 are smaller than most people? Since most people are taller than me 😅

[@ghenkhoash2440]

I hate nasty surprises.

[@bepisman7273]

Uh oh !

[@andrewcliffe4753]

The problem with ventilation is $$$$$$$$$

[@anonz975]

Started off interesting but instead of ending with practical applications it jumped to Covid??? Won't be watching anymore of these.

[@foobar527]

It did end with practical applications. At 3:18, the author clearly explained why this is important, namely that airflows carry not only carry dust particles but also other harmful particles such as pollution or viruses such as Covid-19. Try rewatching the video again and reevaluate your opinion. Everyone is entitled to an opinion, but not all opinions are valid.