English: On the right of this figure a microscopic portion of a curved surface of a rotor blade pushes the air down increasing your density, to the left the air remains in the local air density.
Português: A direita desta figura uma microscópica porção da superfície curva de uma pá de rotor empurra o ar para baixo aumentando sua densidade. A esquerda da figura o ar permanece com a sua densidade local.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.