The earliest experimental studies on halo phenomena have been attributed [16] to Auguste Bravais in 1847. [17] Bravais used an equilateral glass prism which he spun around its vertical axis. When illuminated by parallel white light, this produced an artificial Parhelic circle and many of the embedded parhelia. Similarly, A. Wegener used hexagonal rotating crystals to produce artificial subparhelia. [18] In a more recent version of this experiment, many more embedded parhelia have been found using commercially available [19] hexagonal BK7 glass crystals. [20] Simple experiments like these can be used for educational purposes and demonstration experiments. [13] [21] Unfortunately, using glass crystals one cannot reproduce the circumzenithal arc or the circumhorizontal arc due to total internal reflections preventing the required ray-paths when n < 2 {\displaystyle n<{\sqrt {2}}} . Ping-Yü, Ho; Needham, Joseph (1959). "Ancient Chinese Observations of Solar Haloes and Parhelia". Weather. Wiley. 14 (4): 124–134. Bibcode: 1959Wthr...14..124P. doi: 10.1002/j.1477-8696.1959.tb02450.x. ISSN 0043-1656.

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The earliest chemical recipes to generate artificial halos has been put forward by Brewster and studied further by A. Cornu in 1889. Made with 45 LEDS, this light is perfect for hanging from a tree, from trellis, parasols or hanging hooks to give your outdoor space a decorative touch. The Spiralight is powered by a rechargeable battery and the solar panel on top, this creates a piece that requires no mains power and is super simple to set up. Plus, it automatically switches on at dusk and off again in the morning so it will operate entirely on its own. Features and Benefits Ulanowski, Zbigniew (2005-09-20). "Ice analog halos". Applied Optics. The Optical Society. 44 (27): 5754–5758. Bibcode: 2005ApOpt..44.5754U. doi: 10.1364/ao.44.005754. ISSN 0003-6935. PMID 16201438. Sur la reproduction artificielle des halos et des cercles parh eliques”, Comtes Rendus Ac. Paris 108, 429–433, A. Cornu, 1889.Decorative, stylish and giving off a multi-coloured glow, this Mega Spiralight from Smart Garden Products is sure to add that something special to your outdoor area. Following Huygens' idea of the (false) mechanism of the 22° parhelia, one may also illuminate (from the side) a water-filled cylindrical glass with an inner central obstruction of half the glasses' diameter to achieve upon projection on a screen an appearance which closely resembles parhelia (cf. footnote [39] in Ref., [9] or see here [11]), i.e. an inner red edge transitioning into a white band at larger angles on both sides of the direct transmission direction. However, while the visual match is close, this particular experiment does not involve a fake caustic mechanism and is thus no real analogue. A Bottlinger's ring is a rare type of halo that is elliptical instead of circular. It has a small diameter, which makes it very difficult to see in the Sun's glare and more likely to be spotted around the dimmer Subsun, often seen from mountain tops or airplanes. Bottlinger's rings are not well understood yet. It is suggested that they are formed by very flat pyramidal ice crystals with faces at uncommonly low angles, suspended horizontally in the atmosphere. These precise and physically problematic requirements would explain why the halo is very rare. [4] Other names [ edit ] Glory– Optical phenomenon that resembles an iconic saint's halo about the shadow of the observer's head

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a b Selmke, Markus (2015). "Artificial halos". American Journal of Physics. American Association of Physics Teachers (AAPT). 83 (9): 751–760. Bibcode: 2015AmJPh..83..751S. doi: 10.1119/1.4923458. ISSN 0002-9505. Atmospheric optical phenomena like halos were used as part of weather lore, which was an empirical means of weather forecasting before meteorology was developed. They often do indicate that rain will fall within the next 24 hours, since the cirrostratus clouds that cause them can signify an approaching frontal system. Nance, Robert Morton; Pool, P. A. S. (1963). A Glossary of Cornish Sea-Words. Cornwall: Federation of Old Cornwall Societies. p.61. Nepal skies graced with extraordinary 'circular rainbow' halo around sun". The Himalayan Times. 9 July 2015 . Retrieved 3 August 2016.

Other common types of optical phenomena involving water droplets rather than ice crystals include the glory and rainbow.