Scientists have proposed and experimentally demonstrated a ratchet concept to control the spin motion. In analogy to a ratchet wrench, which provides uniform rotation from oscillatory motion, such ...

Grease both lubricates and keeps contaminants out of bearings. But its job is often made difficult by back-and-forth, or oscillatory, motion. Printing presses are a classic example: Frequent returns ...

Inside every living cell, internal structures are continuously moving about. Under a microscope, organelles such as the nucleus, mitochondria, transport vesicles, or even external flagella wobble and ...

When a particle, in a medium like water, is set into oscillatory motion, the neighbouring particles are also set into oscillatory motion due to the elastic forces. A wave disturbance starts spreading ...

In shampoo ads, hair always looks like a shiny, smooth surface. But for physicists peering into microscopes, the hair surface looks much more rugged, as it is made of saw-tooth, ratchet-like scales.

Cross frequency brain stimulation enhances visual recovery after stroke, improving motion processing and visual field ...

Oscillating motion can quickly destroy even over-sized bearings. Understanding and treating the problem, rather than the symptoms, is the cure. Grease both lubricates and keeps contaminants out of ...