'Edward Craven Walker created this device that undulates as light heats it'
a lava lamp
L.L., SEE: Edward Craven Walker created this device that undulates as light heats it
Edward Craven Walker created this device that undulates as light heats it
Edward Craven Walker created this device that undulates as light heats it
"L.L.", SEE
a lava lamp
"L.L.", SEE