Most people have experienced the hair-raising effect of rubbing a balloon on their head or the subtle spark caused by dragging socked feet across the carpet. Although these experiences are common, a ...

1.1 What is friction? Take this everyday example: when a coffee mug rests on a flat table, the kinetic frictional force is zero. There is no force trying to move the mug across the table, so there is ...

Static electricity was first observed in 600 BC, but researchers have struggled to explain how it is caused by rubbing. With a better understanding of the mechanisms at play, researchers potentially ...

Researchers have demonstrated how to entirely suppress static friction between two surfaces. This means that even a minuscule force suffices to set objects in motion. Especially in micromechanical ...

The coefficient of Friction of a material is the measure of the sliding resistance of a material over another material. In the case of thermoplastics the mating part is normally steel. When ...

If you want to know how to make a sneaker with better traction in the rain, just ask a snake. That’s the theory driving the research of Hisham Abdel-Aal, PhD, an associate teaching professor from ...

For the past 50 years, engineers have been “designing” duct systems. Quite often, they were not actually designing the systems, but were sizing duct the duct according to some rule of thumb. The rules ...

Keywords: seismic isolation; Triple FP isolator modeling; uplift, landing, rocking, bouncing, overturning, flying and contact of bearing components Abstract: Current models that describe the behavior ...

Real-time streaming well data monitors drilling performance and aids drilling decisions using web-based drilling models to calculate and predict drilling parameters. These models improve rate of ...

Scientists developed a new model, which shows that rubbing two objects together produces static electricity, or triboelectricity, by bending the tiny protrusions on the surface of materials. Most ...