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  2. Baily's beads - Wikipedia

    en.wikipedia.org/wiki/Baily's_beads

    The diamond ring effects in the moments just before and after a beaded eclipse are often referred to as diamond tiaras. Beaded annularity or totality duration is very short - less than about 12 seconds. However, the annularity duration before and after beaded hybrid totality and beaded annularity can be longer.

  3. Astronomical rings - Wikipedia

    en.wikipedia.org/wiki/Astronomical_rings

    The declination ring is moveable, and rotates on pivots set in the meridian ring. An imaginary line connecting these pivots is parallel to the Earth's axis. The declination "ring" of the traveller's sundial above is not a ring at all, but an oblong loop with a slider for setting the season.

  4. Armillary sphere - Wikipedia

    en.wikipedia.org/wiki/Armillary_sphere

    Jost Bürgi and Antonius Eisenhoit: Armillary sphere with astronomical clock, made in 1585 in Kassel, now at Nordiska Museet in Stockholm. An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (on the celestial sphere), consisting of a spherical framework of rings, centered on Earth or the Sun, that represent lines of celestial ...

  5. Globus cruciger - Wikipedia

    en.wikipedia.org/wiki/Globus_cruciger

    Constantine I claimed to have had a vision of symbol of Christ above the sun, with the words "In this sign, you shall conquer" (Latin: "In hoc signo vinces"), before the Battle of Milvian Bridge in AD 312. This symbol is usually assumed to be the "Chi-Rho (X-P)" symbol, but some think it was a cross.

  6. Rings of Earth - Wikipedia

    en.wikipedia.org/wiki/Rings_of_Earth

    The ring was first formally proposed after 21 impact craters from the meteor event were found to be located along a straight band around the Earth's equator. [10] [11] Andrew G. Tomkins, [9] Erin L. Martin [9] and Peter A. Cawood, [9] working with Monash University, released a study in September 2024 that gave evidence on the existence of the ...

  7. FACT CHECK: Are ‘Strange Experiments’ Causing Optical Rings ...

    www.aol.com/news/fact-check-strange-experiments...

    A post on X claims that “strange experiments” are causing rings to be seen around the sun in a photograph of the Arizona sky. Verdict: False This is called a “solar halo.” This is a ...

  8. Equatorial ring - Wikipedia

    en.wikipedia.org/wiki/Equatorial_ring

    The equatorial ring was about one to two cubits (45cm–90cm) in diameter. Because the Sun is not a point source of light, the width of the shadow on the bottom half of the ring is slightly less than the width of the ring. By waiting until the shadow was centered on the ring, the time of the equinox could be fixed to within an hour or so.

  9. Halo (optical phenomenon) - Wikipedia

    en.wikipedia.org/wiki/Halo_(optical_phenomenon)

    A light pillar, or sun pillar, appears as a vertical pillar or column of light rising from the Sun near sunset or sunrise, though it can appear below the Sun, particularly if the observer is at a high elevation or altitude. Hexagonal plate- and column-shaped ice crystals cause the phenomenon.