Hanging on in quiet desperation is the English way. That lyric from the melancholic lament “Time” on Pink Floyd’s 1973 release, “Dark Side of the Moon,” takes on new meaning in the light of the United Kingdom’s departure from the European Union. You can escape the daily deluge of post-millennium tensions when the Pink Floyd Laser Spectacular puts another brick in the wall at the National on Friday, July 8. This isn’t just any old laser show. It’s a multimedia extravaganza expanding on the iconic group’s vision with a multitude of see-them-to-believe-them optical technologies. Produced by the Paramount Organization, doors for the high-fidelity, first-class traveling set of sights and sounds open at 8 p.m. Tickets, including 3-D glasses, cost $19.50-$24.50. Get a peek at all the eye candy at pinkfloydlasershow.com. thenationalva.com.