Singapore was treated to a rare weather
phenomenon as an apparent "fire rainbow" lit up the sky. Weather
watchers on the island state in south-east Asia were treated to the
multi-coloured glow yesterday. The stunning scene may also have been cloud
iridescence. Both phenomena can be caused by the refraction of light through
ice crystals, or in the case of iridescence, by water droplets. For iridescence
to occur clouds must be thin so the sun's rays encounter very little water.
The technical name
for a fire rainbow is a "circumhorizontal arc". The light show
persisted for about 15 minutes and could reportedly be seen across the island.
Pre-school teacher Chi Navarro said: "Can't help but to share this
wonderful phenomenon."Childcare worker Fazidah Mokhtar told the
BBC: "It started as a small orange circle and then grew bigger and
bigger till all the colours came out... It lasted for about 15 minutes and it
slowly went off." Source: http://www.independent.co.uk
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