Test Card F

The BBC’s “Test Card F“, featuring an eight-year-old Carole Hersee and her stuffed clown Bubbles.  The card was used between July 2, 1967 and sometime in 1998.  Most interesting is the card aired for more than 70,000 hours, or nearly 8 years; trapped in this stasis of tribal abstraction and in absolute stillness, Carole and her toy both seem like a paralyzed person, capable of rapid and inquisitive thought but physically unable to move or communicate the fruit of their long meditation.

Via: Wikipedia

Sawtooth ASCII Pattern

Via: a very old article about TV repair