The phrase "a set of planes" is correct and usable in written English.
It can be used when referring to multiple planes, either in a mathematical context or in a physical context, such as aviation or design.
Example: "The architect presented a set of planes that outlined the different levels of the building."
Alternatives: "a collection of planes" or "a group of planes".
Try to choose a set of planes so that as many of the electrons as there are will fall on or near that set of evenly spaced planes.
Now because it only has to be near, there are other directions we could draw it, so we get a set of planes where they're near but not on; like here, right?
But we could also take a set of planes, and it goes not only up but also down, both branches; both directions of that particular branch of the X, come from the same planes.
Each near2far-region is identical to flux-region except for the name: in 3d, these give a set of planes (important: all these "near surfaces" must lie in a single homogeneous material with isotropic ε and μ — and they should not lie in the PML regions) surrounding the source(s) of outgoing radiation that you want to capture and convert to a far field.
Using this observation, we group points of maximum curvature to find a set of planes for decomposing the colony into individual nuclei.
The diffraction profile from a set of planes from a perfect crystal is predicted to reveal two peaks, one associated with a mirror reflection and the other associated with the spacing between the planes (Fewster, 2014 ▸).
The motion of the plate is assumed composed of a set of plane propagating waves of unknown wavenumber and amplitude.
A set of plane diffuse reflectors is used to direct the radiation onto the lower side of the absorber plate.
A mathematical model was developed and numerical modeling of a heat transfer process in a set of plane-parallel plates was performed.
At the Avenue of the Americas and 41st Street, Gary Barber, 36, pleaded his case to police officers guarding the blue barricades: Could he simply retrieve a set of plane tickets from his apartment at 123 West 44th Street?
A set of plane mirrors, aligned at right angles to the eye surface, change the direction of rays (in much the same way as len cylinders), thereby producing a single erect image by superposition.
