It’s hard to convert energy from the ocean into electricity, thanks to a tough regulatory environment and, well, the ocean.

Neuroscientists have discovered that when the brain is distracted, coordinated “rotating” waves of neural activity help it steer back to focus.

Abstract: The electron optical system is a key component of the traveling wave tube (TWT), which is used to provide the DC input to drive the device. In this paper, an electron optical system (EOS) is ...