Figure 2: The effect of viewing through a pair of 10 PD base-up prisms and the after-effect of adaptation to base-up prisms on judged distance in the light (n = 7). Our findings have confirmed the two ...

Yes, there are places on Earth where the Moon does not appear above the horizon. There are also places where the Moon is circumpolar and doesn’t set, at least for a period of time. To determine the ...

At some point in recent weeks, a once-in-a-lifetime event happened for people at Greenwich in the United Kingdom. Magnetic compasses at the historic London area, known as the home of the Prime ...

Researchers recently showed that migratory reed warblers depend on an internal geomagnetic map to guide them on their long-distance journeys. But it wasn't clear how the birds were solving the ...