Abstract: Wheel-driven mobile in vivo robotic devices can provide an unconstrained platform for visualization and task performance. Careful understanding of the wheel–tissue interaction is necessary ...

Friction is a force that opposes motion. It is present whenever two surfaces rub over each other, such as when you rub your hands together, or when you apply the brakes on a bike or in a car. Friction ...

Induction and conduction as methods of transferring static charge are compared. Transferring Static Charge: Induction and conduction as methods of transferring static charge are compared. Students ...

The questions in this quiz are suitable for GCSE physics students studying electrical charges, charging by friction and electric fields. If you struggled with the quiz, don't panic - we've got you!

US scientists have found the first experimental evidence that geckos use electrostatic forces – not capillary action – to walk safely across even very smooth ceilings. To compare the electrostatic and ...

Triboelectricians Juan Carlos Sobarzo (left) and Scott Waitukaitis at the Institute of Science and Technology Austria. (Courtesy: ISTA) Physicists in Austria have shown that the static electricity ...

The original version of this story appeared in Quanta Magazine. Imagine, for a moment, that you’re a honeybee. In many ways, your world is small. Your four delicate wings, each less than a centimeter ...