Those waves reflect off the body to transmit a three-dimensional image of the passenger that looks like a fuzzy photo negative.

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Nowadays, hybrid movies that merge live action with computer animation to produce three-dimensional digital maps of their real-life actors' body movements include lots of fine-grained information about expression.

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But Naughton figured out a way to fool the cells into thinking they were in the body by suspending the cells on a three-dimensional net made of suture material.

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The machines use magnets and radiowaves to excite hydrogen atoms in body tissues, creating data that computers assemble into three-dimensional images.

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The Radio Plasma Imager instrument provides a three-dimensional view of the plasmasphere by sounding it with radio pulses, like an ultrasound image of the human body.

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