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Should You Get a 3D or 4D Ultrasound?What about 3D and 4D ultrasound technology? Learn about the safety and use of the different types of ultrasounds.Medically reviewed by Alyssa Dweck, MS, MD, FACOGMedically reviewed by Alyssa Dweck, MS ...
By implementing a 2D topological charge pump using ultracold bosonic atoms, the theoretically predicted 4D integer quantum Hall effect is confirmed experimentally.
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