The Eureka effect on memory only occurs when there is an initial confusion.

The Eureka effect, also known as the aha!

The Eureka Effect: Astrology of Scientific Discovery.

The Eureka effect was first described by Pamela Auble, Jeffrey Franks and Salvatore Soraci in 1979.

The Eureka effect is named after the myth that the Greek polymath Archimedes, having discovered how to measure the volume of an irregular object, leaped out of a public bath, and ran home naked shouting "eureka" (I found it).