Two bogus answers in a row! The latest asked why your finger at arm’s length can block out the sun’s light, while it can’t block out the moon’s. Here’s the answer given:
"So, why can you stand on earth and block out the sun with your finger, but not the moon?
The answer is, it has nothing to do with the size of the sun, the moon, or your finger. It has to do with the fact that it is daytime when the sun is out and it is nighttime when the moon is out.
So when you do this during the day, the sunlight makes the pupil of your eye smaller and it is easier to block it out with your finger. That is what the daylight does to your eye.
But at night, your pupil dilates, to take in as much light as it can in the darkness of the night. In fact, the only available light is from the moon, right? And then when you put your finger up between your eye and the moon, your pupil is too big. Your vision of the moon cannot be blocked out by your finger held at arm’s length.
Basically, the edges of the pupil are looking around your finger.
So it has to do with how your eye reacts to the darkness."
Nonsense. I did it on my early morning walk, full moon, finger at arm’s length, it blocked out the moon completely.
