London. Cat shows later became a

Introduction to Quantum Mechanics, often called Griffiths, is an introductory textbook on quantum mechanics by David J. Griffiths. The book is considered a standard undergraduate textbook in the subject. Originally published by Pearson Education in 1995 with a second edition in 2005, Cambridge University Press (CUP) reprinted the second edition in 2017. In 2018, CUP released a third edition of the book with Darrell F. Schroeter as co-author; this edition is known as Griffiths and Schroeter.

Upplands Väsby is a station on the Stockholm commuter rail network, located 24.4 km north of Stockholm Central Station. It is the only station within Upplands Väsby Municipality, situated between Rotebro and Rosersberg stations. The station has two platforms and two ticket halls, with the northern hall accessed via an underpass and the southern hall connected to the bus terminal. A small depot is located north of the station, used for storing commuter train carriages. As of 2022, the station has an average of 7,700 boardings per weekday.