Abstract: Angular momenta of electromagnetic waves are important both in concepts and applications. In this work, we systematically discuss two types of angular momenta, i.e., spin angular momentum ...

Abstract: Arbitrary oriented object detection (AOOD) in aerial images is a widely concerned and highly challenging task and plays an important role in many scenarios. The core of AOOD involves the ...

Examples of shadows appearing to resemble unexpected objects or figures. Massive data breach sees millions of credit card details leaked Some Republican lawmakers call for mass expulsion of American ...

In fiction, magic makes levitation easy. With a simple swish-and-flick of his wand, Ron Weasley yanks a troll’s club high above its head in Harry Potter and the Sorcerer’s Stone. Through graceful ...