Rengasmaisuus
Rengasmaisuus is a term originating from Finnish that describes a specific type of atmospheric optical phenomenon. It translates roughly to "ring-like appearance" or "annularity." This phenomenon is characterized by the appearance of a circular or ring-like halo around a celestial object, most commonly the sun or moon. While it can refer to various atmospheric effects, it is most frequently associated with the appearance of a solar eclipse in its annular phase.
During an annular solar eclipse, the Moon passes directly between the Sun and Earth, but is too
The term can also be used more broadly to describe other visual effects where a circular halo