(physics) A three-dimensional partial differential equation which determines the evolution of a quantum mechanical wave function

The original period of concerted feminist activity during the 19th and early 20th century, focusing on de jure gender inequalities, primarily that of suffrage (the right to vote).

A period of feminist activity that began in the early 1990s as a response to perceived failures of second-wave initiatives to address the needs of women of many races, ethnicities, nationalities, religions and cultural backgrounds.

A period of feminist activity that began in the early 1960s in the United States and broadened the gender equality debate to include family, the workplace, reproductive rights, etc.

(electronics) A type of vacuum tube which amplifies electromagnetic signals, where the electron gun fires down the tube with an unmodulated electron beam, that passes through an interaction array, where the EM-signal is fed, which interacts with the electron beam, bunching the electrons, and transferring power to the signal.

plural of traveling-wave tube Alternative form of travelling-wave tubes

plural of travelling-wave tube

A modern approach to growing and making coffee, where the beans are treated as an artisanal ingredient.

plural of quarter-wave plate

A follower of third-wave feminism.