Recent content by Change in pressure

Raked wingtips have more sweep compared to the rest of the wing. But how they reduce induce drag? I can not find explanantion...boeing dreamliner albatros

Hi all, I understand that both winglets and raked wingtips are for the same function (from what I have read) - to reduced the amount of induced drag. I understand the principles behind winglets, however I am uncertain how raked wingtips actually achieve this? Could anyone please explain the...

very nice lecture but this toillet paper open becuase of air pressure,not coriolis. :)

hause high 50km at equator C(equator)=2r x 3.14 = 2 x 6371km x 3.14 =40 009km / 24h = 1667km/h C(ball)= 2r x 3.14 = 2 x (6371km+50km) x3.14 =40323km /24h = 1680km/h 1680-1667=13km/h top of hause travel 13km/h faster then bottom... so this 13km/h is additional velocity which ball have in...

so if I jump high enough in london I can fall down in new york? or if I throw ball down from very high house(50km) in london,,ball will touch ground at China? (that coriolis say)

Force= pressure x area ...so balloon have bigger area so wind affect balloon more... can you explain me why if you jump high enough(like you said) Earth under you will move but small cheap dron which do not have electronics that hold him in same place and wind is zero,stay in same place=earth...

imagine dron without electorincs which hold him in same place,so he only hover and wind is zero...will "new york" than come under dron or not??

Here I just mention air as reminder that air is moving with Earth ,we are in one system,earth and air is one same system,I do not talking about cross wind etc... I am interested only in coriolis... You tell if you jump high enough that ground will move under you,so you will not fall down in...

why do you think that air affect helicopter but bullet not? Isnt strange that ground under helicopter do not rotate but ground under bullet is rotate? I just mention this contradiction or maybe is just my own misconception...

why she choose bullet path across others paralles(at 0:58) before shooting bullet,normally than would be horizontal correction because bullet travell a little bit north as well? This is not good example of shooting on same latitude

Air exist in bullet situation..

Why than ground do not moving under hover helicopter,even if he hover 100years?

but our assumption is that in first 1000m bullet will go in straight line..

Can explain this left/nortwarth ,left/southward, with some animation or picture? I don't understud that,I see only vertical correction when shoot est-west ,west-est. axis of rotation is prependicular to latitude plane,so this platter is not tilted,so ho can horizontal deflection genereted?

If air drag is not exist, why would not reach?