Julie and her father love to find the constillations in the sky on starry nights. One evening, Julie came running into the house and whispered excitedly to her mother, "mom, I've got power! When I look hard at a star it dissapears!" What was happening?
2006-08-14 10:23:13 · 4 answers · asked by stressed s 1 in Science & Mathematics ➔ Biology
The star's image moves onto the blind spot on the retina, which is where the optic nerve passes through the back of the eye.
2006-08-14 10:29:17 · answer #1 · answered by Pascal 7 · 1⤊ 0⤋
I don't know the exact reason, but that's a totally normal thing. If you look at a tiny light (star) for very long, it kinda seems to fade, and you can't see it.
2006-08-14 17:29:24 · answer #2 · answered by smartee 4 · 0⤊ 0⤋
It's called "adaptation". neurons that connect to the retina become exhausted relaying messages of light, and after being overused, fail to relay information that there is a light signal, so it all looks the same, dark....sorta dark.
2006-08-14 17:28:59 · answer #3 · answered by russ0319 1 · 2⤊ 0⤋
I talked to julie and she said you made up the whole story. Boy is she mad at you now.
2006-08-18 07:30:24 · answer #4 · answered by uselessadvice 4 · 0⤊ 0⤋