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・ Rotation of ammunition
・ Rotation of axes
・ Rotation operator
・ Rotation operator (quantum mechanics)
・ Rotation period
・ Rotation system
・ Rotational angiography
・ Rotational bell painting
・ Rotational Brownian motion
・ Rotational Brownian motion (astronomy)
・ Rotational correlation time
・ Rotational cryptanalysis
・ Rotational diffusion
・ Rotational energy
・ Rotational invariance
Rotational modulation collimator
・ Rotational molding
・ Rotational mouse
・ Rotational partition function
・ Rotational sampling in wind turbines
・ Rotational spectroscopy
・ Rotational speed
・ Rotational symmetry
・ Rotational temperature
・ Rotational transition
・ Rotational viscosity
・ Rotational–vibrational coupling
・ Rotational–vibrational spectroscopy
・ Rotationplasty
・ Rotations in 4-dimensional Euclidean space


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Rotational modulation collimator : ウィキペディア英語版
Rotational modulation collimator
Rotational modulation collimators (or RMCs) are a specialization of the modulation collimator, an imaging device invented by Minoru Oda. Devices of this type create images of high energy X-rays (or other radiations that cast shadows). Since high energy X-rays are not easily focused, such optics have found applications in various instruments. RMCs selectively block and unblock X-rays in a way which depends on their incoming direction, converting image information into time variations. Various mathematical transformations can then reconstitute the image of the source.
RHESSI is the first mission to make use of Rotational Modulation Collimators in space.
==See also==

* Coded aperture
* Collimator
* Modulation
* Modulation collimator

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