By combining the shapes of blown glass with different gases and electronic circuits, an endless variety of tube effects are possible.
Filled with a material that gives them bright, sharp colors, Crackle Tubes tubes can be used even under full ambient lighting. They consume very little power, have a long life and can be made with one or more colors in the same tube.
The photograph below of a crackle tube shows some colored ionized areas which the human eye may not always see because the color is only emitted at the end of the brief period that ionization occurs, which the camera happened to capture in this image.
Crackle tubes are unique and a highly adaptable type of display, viewable from 360°. Crackle Tubes can be made straight, bent into shapes, and are available in a rainbow of colors. The Crackle tube power supply runs on a small, 12VDC UL listed wall adapter. The power supply features a crackle speed control, and a music-controlled crackling mode. This enduring display will last through years of around-the-clock operation.