The Mystery of the Clicking Glass Tube: Identifying Those Vintage “Clicker” Toys and the Soothing Nostalgia They Bring

metal beads to help blend viscous or suspended solutions. When placed on a mechanical “vortex mixer,” the beads create turbulence, ensuring a perfect blend.

Why these theories usually don’t fit:

Read more on next pageWhile these scientific uses are real, lab agitators are rarely completely, permanently sealed with a flame-polished glass tip, nor do they typically contain exactly three