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 ...

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Can you imagine running an online store without being able to contact your customers or process their payments? Most of the time, collecting this crucial data is relatively seamless through a simple ...

Simplicity in logo design isn't lazy; it's strategic. A simple logo's job isn't to describe, but to identify. We break down 25 best examples from brands like Apple, FedEx, and Nike to uncover the core ...

In the video above, you’ll meet Penny, a shelter dog struggling to get adopted due to her kennel reactivity. When people walk by, she barks and lunges—making it hard for potential adopters to see her ...

Suchandrima Bhowmik has written over 300 articles on various health conditions, medical news, and recent breakthroughs. Her work appears in several publications ...

This site displays a prototype of a “Web 2.0” version of the daily Federal Register. It is not an official legal edition of the Federal Register, and does not replace the official print version or the ...