Ordinary sunglasses even very dark ones should not be used
as a replacement for eclipse viewing glasses or handheld solar viewers.
People who plan to
view the solar eclipse should check the safety authenticity of viewing glasses
to ensure they meet basic safety standards NASA has recommended. A total solar
eclipse which is when the moon completely covers the sun or moon comes between
the earth and the sun will occur across 14 states in the continental US on
august 21 along a 112 KM wide swath of the country . more than 300 million
people in the US potentially could directly view the solar eclipse and NASA
wants everyone who will witness this celestial phenomenon to do so safely.
NASA message
“It’s common sense not to stare directly at the sun with
your naked eyes or risk damaging your vision and that advice holds true for a
partially eclipsed sun”
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