It's been a long day at the lab for this scientist. Now it's time to say goodnight! Goodnight laser. Goodnight notebook. Goodnight picture of Einstein with a stern look. While poking fun at the clutter and chaos of lab life, scientists of all ages will appreciate ending their day with this sweet parody. They'll be rested and ready to return to the world of research in the morning! This scientific parody is an absolute delight for little lab girls and guys.