Knowledge

/

ArcaMax

How sensitive is your eye?

on

Published in Daily Trivia

The sensitivity of the human eye is so keen that on a clear, moonless night, a person standing on a mountain can see a match being struck as far as 50 miles away. Much to their amazement, astronauts in orbit were able to see the wakes of ships.

 


 

Comments

blog comments powered by Disqus

 

Related Channels

Danny Seo

EcoTips

By Danny Seo
Rob Kyff

The Word Guy

By Rob Kyff

Comics

Archie Peanuts Gary McCoy Dana Summers Curtis Heathcliff