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Mucociliary clearance (MCC), mucociliary transport, or the mucociliary escalator describes the self-clearing mechanism of the airways in the respiratory system. [1] It is one of the two protective processes for the lungs in removing inhaled particles including pathogens before they can reach the delicate tissue of the lungs.
Escalator. For the album by Sam Gopal, see Escalator (album). An escalator is a moving staircase which carries people between floors of a building or structure. It consists of a motor -driven chain of individually linked steps on a track which cycle on a pair of tracks which keep the step tread horizontal.
The broken escalator phenomenon is the result of a locomotor after-effect which replicates the posture adopted when walking onto a moving platform to stabilise oneself. [1] This after-effect was studied by Adolfo Bronstein and Raymond Reynolds in an experiment published in 2003, then explored further through a series of additional experiments ...
Relativity is a lithograph print by the Dutch artist M. C. Escher, first printed in December 1953. The first version of this work was a woodcut made earlier that same year. [1] It depicts a world in which the normal laws of gravity do not apply. The architectural structure seems to be the centre of an idyllic community, with most of its ...
A similar cable extending 6,000 km in the opposite direction would counterbalance the first, so the center of mass of this system remains in Phobos. In total the space elevator would extend out over 12,000 km which would be below areostationary orbit of Mars (17,032 km). A rocket launch would still be needed to get the rocket and cargo to the ...
When a large part of the visual field moves, viewers feel like they have moved and that the world is stationary. [4] For example, when one is in a train at a station, and a nearby train moves, one can have the illusion that one's own train has moved in the opposite direction.
The use of landings and a possible change of direction have the following effects: ... It was originally two outdoor flights of granite-clad stairs and an escalator ...
Penrose stairs. The Penrose stairs or Penrose steps, also dubbed the impossible staircase, is an impossible object created by Oscar Reutersvärd in 1937 [1][2][3][4] and later independently discovered and made popular by Lionel Penrose and his son Roger Penrose. [5] A variation on the Penrose triangle, it is a two-dimensional depiction of a ...