[ad_1]
SINGAPORE – Most eyes in Singapore on Boxing Day were trained on the Sun as a rare eclipse happened, but a few onlookers posted pictures of many strange crescent-shaped light patterns they noticed on the ground.
These shadowy patterns dotted pavements and walkways on Thursday afternoon (Dec 26) during the annular solar eclipse and coincided with the height of the astronomical event when the Moon covered the centre of the Sun to create a “ring of fire” effect at around 1.30pm.
The eclipse, which happened for the first time in two decades, lasted from 11.30am to 3.20pm.
While the patterns might have puzzled some people, there is an explanation for them.
According to Nasa’s website, the effect that created these solar images is similar to that used in pinhole cameras.
A pinhole camera is one without a lens but with a small hole on one side.
Light passes through the hole and projects an inverted image on the other side of the box, a phenomenon called the pinhole effect.
[ad_2]
Source link
