Sentences with phrase «only during solar eclipses»
The corona can be seen only during solar eclipses because it is millions of times fainter than the photosphere.
http://www.aerospaceguide.net/
This instrument was specifically designed for photographing the Sun's corona (the outer layer), which up to that time had been successfully photographed only during solar eclipses.
Not exact matches
Solar eclipse glasses use lenses which reduce the amount of transmitted light to safe levels and are the only eyewear approved for use during eclipse events.