Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: Why are there two eyes and two ears instead of one each?

Learn more physics!

Most recent answer: 11/21/2010
Q:
Why human body have two ears and two eyes..?? Plz answer seperately
- Bhakti (age 14)
India
A:
It's because if you have only one of each you cannot get any depth or direction information.  You can only tell that something is out there but you don't have any clue to where (for sound) or how far (for light) the source is.  This is an evolutionary advantage.
 
LeeH

Also, given the trials and tribulations of life, having a spare is a good idea.
Mike W.

(published on 11/21/2010)

Follow-up on this answer.