OCR Text |
Show THE GREEN FLASH OF SUNSET. ONE of the most rarely witnessed of natural phenomena, but one that has often been discussed dis-cussed at scientific meetings and that always aw ukens wonder when seen, Is the so-called "green tl ish" occasionally visible at the moment of the disappearance dis-appearance e.f the fun behind a clear horizon. The observer's eye must be fixed upon the rim of the sun os It disappear lu order to catch the phenomenon. phe-nomenon. Oue authority tells us that he has seen the greeu flash, although rarely, nt the Instant of the setting of a bright star. Among the explanations offered Is one based upon the optical principle of complementary colors. If erne looks at tbe nn and then closes the eyes a green Ilsk wll! be perceived. A sensitive eye might be similarly affected by a brilliant star. |