Jump rope aerodynamics

Jump ropes are used by kids for fun and by athletes for training. But what about the underlying physics? How do jump ropes work? Can important engineering principles be studied?

Supersonic Freefall

The sound barrier was first broken by an aircraft in 1947, but this year a man will attempt to break the sound barrier with his body alone. His freefall jump from the edge of space will not only break records, but could contribute ...

'Jumping genes' create antibiotic resistance in bacteria

(PhysOrg.com) -- A small piece of foreign DNA recognizes when and where to slip into a bacterium's genetic code, allowing bacteria to genetically adapt to their environment -- and develop resistance to antibiotics, according ...

Party discipline for jumping genes

Jumping genes, transposons, are part of the genome of most organisms, aggregated into families and can damage the genome by jumping. How hosts suppress the jumping is well investigated. Why they still can jump has hardly ...

Jumping, roly-poly, untethered robot described

A novel, fully untethered soft robot capable of repeated jumping is able to cover half a meter in a single hop-and-roll motion. The innovative design of this combustion-powered robot, based on a roly-poly toy, and how it ...

App helps homeowners identify spiders

Each autumn the number of spiders seen indoors suddenly increases as males go on the hunt for a mate. The Society of Biology is launching a new app to help the public learn more about the spiders that will be in their homes ...

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