Search results

For a time now I have been wondering about propellers. When they rotate through water they create pockets of gas. My question is where does this gas come from? Is it (presumably O2) coming out of saturation, or do propellers have enough force to break the bonds of an H2O molecule and release...

I'm having problems finding a good quality SMB in Sharm el Sheikh, Egypt. The SMB I bought recently leeks like a sieve, and the other confirgurations on sale here are cheap and nasty. Any pointers? thanks

I keep on hearing that puffer fish and porcupine fish can only puff up 3-5 times (depending on who's telling the story) in their lifetime. Can anyone with a scientific background confirm this??