2D ultrasounds are part of routine prenatal care. What about 3D and 4D ultrasound technology? Learn about the safety and use of the different types of ultrasounds. Medically reviewed by Alyssa ...

Through a field called geometric topology, mathematicians like me study all possible spaces in all dimensions. Whether trying to design secure sensor networks, mine data or use origami to deploy ...

Definition:4D Scanning Transmission Electron ... capabilities by collecting a two-dimensional (2D) diffraction pattern at each pixel of the scanned area, leading to a comprehensive three-dimensional ...