SAFE VIEWING OF THE ECLIPSEdoi:http://dx.doi.org/10.1136/bmj.319.7206.329Prakash M KabburBMJ
s ultraviolet rays that can damage the eye.B.Sunglasses can only filter harmful rays during total solar eclipses at their greatest magnitude.C.Sunglasses tend to cause the center of the eye to enlarge allowing in more intense light.D.Sunglasses should be used when any part of the sun is ...
However, totality of the eclipse lasts only about 1 to 3 minutes based on geographic location, and bright sunlight suddenly can appear as the moon continues to move. Even a few seconds of viewing the sun during an eclipse can temporarily or permanently burn the macula. Once retina tissue is...
The meaning of VIEWING is an act of seeing, watching, or taking a look; especially : an instance or the practice of watching television.
viewing [英]['vju:ɪŋ][美]['vju:ɪŋ]n.注视，检视，观察;网络 注视; 观测,观察; 观察;形近词：stewingcrewingclewing 1 You also use Eclipse-based tools for viewing and analyzing code and runtime data, and for visually correlating that data.您还可以使用...
During a solar eclipse, the sun and moon have the same horizontal coordinate. With any type of celestial coordinate system, everything is assumed to be on the interior surface of the celestial sphere. The azimuth must be relative to a particular point on the compass. Most...
If you've been following all the hubbub about the eclipse path of totality that will cross over Illinois on Monday, you probably know that our southern Illinois neighbors will be getting the best show and prime viewing locations.Google MapsFor...
For those of us in Northern Illinois, (who don't intend to drive South for the show), experts say we can expect to see 91% of the moon covering the sun, which still sounds cool to me. So, what time exactly should we have our eclipse glasses on and our eyes on the sky? When ...
根据第一段中“Texan Laverne Biser, now 106 years old, was born in 1918 and began viewing solar eclipses (日食) with his own self-designed equipment in 1963. His lifelong love for this phenomena took him across the globe to catch the best possible views of each uncommon eclipse. (现年...
being cancelled both are set for 0600 departures. arriving in time for the start of the eclipse, all of the totality and then getting on plane to come home shortly there after. If I go in a day early I lose the flexibility of determining which city has the best weather for the e...