Pitch-drop experiments involve heating a sample of pitch and pouring it into a sealed glass funnel. The pitch is given time — three years in Parnell’s experiment — to settle and consolidate ...

“A higher viscosity oil (like 10W-30) should be used in warmer weather because it has better lubrication at higher temperatures.” Again, check your owner manual for specifics to your vehicle.

Since 1944, physicists at Trinity College in Dublin have been trying to measure the viscosity of pitch tar, a polymer seemingly solid at room temperature, and witness it dripping from a funnel.

VISCOSITY A measure of resistance to flow is the ultimate sticky question. In its natural state, oil sands high-viscosity bitumen is 1,000 times thicker than light crude.

As oil flows, sensors along the funnel are activated, and the distance between the two sensors is recorded. Next, the kinematic viscosity is calculated. After being opened, the split cell is easily ...