Dr Robert Vinyl Rips -

This leads to the obvious, terrifying question: The "Experiment" According to the legend, in the late 1970s or early 80s, a physicist named Dr. Robert Vinyl Rips decided to test this. He filled a large industrial drum with cornstarch and water, lubricated his arm with vegetable oil, and plunged his hand into the goo.

He then attempted to withdraw his hand at speed. The result, as told by his (alleged) lab assistant, was catastrophic. The shear-thickening effect locked the oobleck into a solid plug around his wrist. No amount of tugging could free him. He was, for all intents and purposes, handcuffed by pudding. Dr Robert Vinyl Rips

Furthermore, the human hand is not a rigid piston. You could wiggle your fingers, create tiny gaps, and slowly work your hand free. Amputation is not required. (Unless you panic and pull harder, which only makes the fluid thicker.) The story of Dr. Robert Vinyl Rips survives because it is a perfect pedagogical tool. It dramatizes a counterintuitive physical property in a visceral, memorable way. Every materials science professor who tells the story adds a caveat: "Don't try this. Ask Dr. Rips." This leads to the obvious, terrifying question: The

Experiments by real physicists (such as those at the University of Chicago) have shown that while shear-thickening fluids create immense resistance, they do not form a permanent lock. The force required to pull a hand out increases exponentially with speed, but if you pull extremely slowly —millimeters per minute—the fluid has time to flow. You would eventually escape. He then attempted to withdraw his hand at speed

As for Dr. Rips? Some say on quiet nights in abandoned labs, you can still hear the sound of a hand, trapped in a drum of oobleck, tapping slowly from the inside. Disclaimer: No physicists were harmed in the making of this article. Dr. Robert Vinyl Rips is a fictional character used to illustrate principles of rheology.

The party trick is simple: you can roll a ball of oobleck in your palm, but the moment you stop moving it, it melts into a puddle. You can punch a vat of it, and your fist will stop dead as if hitting concrete.

After several hours, and with his hand turning purple, Dr. Rips reportedly had to be cut free—not from the drum, but from his own hand . The legend concludes with a grim medical footnote: he opted for amputation at the wrist rather than wait for the mixture to slowly liquefy (which could take days). Here is where the story gets both disappointing and fascinating: No record of a Dr. Robert Vinyl Rips exists.