# gst: apropos of odd droplets; fluids with broken symmetries could self-control their mechanics.

<< Flows with deformable interfaces are commonly controlled by applying an external field or modifying the boundaries that interact with the fluid, (..) Here, (AA) demonstrate that fluids with broken symmetries can self-control their mechanics. (They) demonstrate that odd viscosity dramatically disrupts conventional symmetric spreading by inducing asymmetric deformations and chiral flow patterns. (Their) analysis reveals a variety of dynamic regimes, including leftward and rightward bouncing, as well as rolling, depending on the relative strength of the odd viscosity. >>️

Hugo França, Maziyar Jalaal. Odd Droplets: Fluids with Odd Viscosity and Highly Deformable Interfaces. arXiv: 2503.21649v1 [cond-mat.soft]. Mar 27, 2025.

https://arxiv.org/abs/2503.21649

Also: drop, droplet, droploid, chiral, bouncing, rolling, slipping, in https://www.inkgmr.net/kwrds.html 

Keywords: gst, drop, droplet, droploid, chirality, bouncing, rolling, slipping, oddity, odd viscosity, self-control

# gst: apropos of bouncing, even balls that undergo rolling are typically found to lift off slipping.

<< A detailed set of experiments are described that capture over a 1000 different instances of the bounce of a golf ball. (..) Data are presented from two different turfs; one artificial and one from a typical tee. >>

<< A better fit to the data is found using a non-physical piecewise-affine landing to lift-off relationship, which distinguishes between cases that bounce in pure slip from those that undergo rolling. Nevertheless, even balls that undergo rolling are typically found to lift off slipping, having undergone spin reversal. >>

Stanisław W. Biber, Kristian M. Jones, et al. Measurements and linearized models for golf ball bounce. arXiv: 2302.02758v1 [physics.class-ph]. Jan 13, 2023. 

https://arxiv.org/abs/2302.02758

Also

keyword 'bouncing' | 'rolling' | 'slipping' in FonT

https://flashontrack.blogspot.com/search?q=bouncing

https://flashontrack.blogspot.com/search?q=rolling

https://flashontrack.blogspot.com/search?q=slipping

Keywords: gst, bouncing, rolling,  slipping