Andrew Beattie was part of the original editorial team at Investopedia and has spent twenty years writing on a diverse range of financial topics including business, investing, personal finance, and ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

Abstract: Various studies have considered the reduction in sidelobes when using window functions, and further sidelobe reduction using existing design results is an important perspective. In this ...

Abstract: Window design in overmoded waveguides that achieves both broadband and high power is a challenge in the vacuum electronic devices. Here, a broadband overmoded meta-surface-assisted window ...

Neurons are cells that transmit electrical signals through the nervous system. Motor neurons control muscle activity and movement by carrying impulses from the brain and spinal cord. Sensory neurons ...