The narrow-width effect is a phenomenon observed in electronic devices.

Playing too much Tetris can lead to the Tetris effect.

The Frey effect is an auditory phenomenon.

The pencil marks on the paper were effaceable with an eraser.

The effective radiated power of the radio station is 50,000 watts.

The new law will put into effect next month.

The von Restorff effect is a psychological phenomenon that states that an item that is distinct from the others is more likely to be remembered.

The Zeigarnik effect is a psychological phenomenon that refers to the tendency to remember incomplete tasks more than completed ones.

The McClintock effect is a phenomenon named after Martha McClintock, an American psychologist.

The Vandenbergh effect is a phenomenon named after the Dutch psychologist Ad Vandenbergh.