Showing 1-2 of 2 results
-
Killers of the deep
Learningpost, David Canavan, Published on 18/05/2010
» There is something spooky and frightening about killers in the water. I think it is because we rarely see them, unlike aerial or land hunters. They are arguably among the most unknown and undiscovered hunters due to the difficulties in researching them.
-
Sonar
Learningpost, David Canavan, Published on 26/01/2010
» I have a question for you, the answer to which I will give you at the end of this article. You are on a boat looking for a school of fish when your sonar finally finds a school. It emits a "ping" that travels at the speed of sound, which is about 1,500 metres per second in water, and the reflected sound is received half a second later. Using the formula distance equals to speed multiplied by time, work out how deep the fish are, but be careful - there is a catch (pun intended).
Your recent history
-
Recently searched
-
Recently viewed links
Did you find what you were looking for? Have you got some comments for us?
