Money spinner

The “Spinner” Illusion: More Dots, More Speed?

The perceived speed of a ring of equally spaced dots moving around a circular path appears faster as the number of dots increases (Ho & Anstis, 2013, Best Illusion of the Year contest). We measured this "spinner" effect with radial sinusoidal gratings, using a 2AFC procedure where participants selected the faster one between two briefly presented gratings of different spatial frequencies (SFs) ...

Variable–rate, Spinner–disc Fertilizer Applicator

The popularity of spinner spreaders for application of granular fertilizers and agricultural lime, along with increased interests in variable–rate technology (VRT), has raised concern about application accuracy and distribution of these spreaders. This investigation was undertaken to assess the application distribution of a VRT spinner fertilizer spreader. Application distribution was assessed ...

Phonation behavior of cooperatively foraging spinner dolphins.

Groups of spinner dolphins have been shown to cooperatively herd small prey. It was hypothesized that the strong group coordination is maintained by acoustic communication, specifically by frequency-modulated whistles. Observations of groups of spinner dolphins foraging at night within a sound-scattering layer were made with a multibeam echosounder while the rates of dolphin sounds were measure...

Spinner dolphin SCUBA tanks develop no faster.

Spending money to save money.

t is a challenging time to be taking up the reins of Sexually Transmitted Infections. After a prolonged period of decline, there are epidemics of bacterial STIs in the United Kingdom and Western Europe, including outbreaks of syphilis. HIV continues to escalate; the prevalence of HIV is escalating due to persistent or rising incidence combined with increased survival. Globally we face major epi...