Schoolboy explodes goldfish memory myth
Following the initial three-week period, Rory removed the beacon from the feeding process.
Six days later, he once again placed the beacon in the water and despite not seeing it for almost a week, the fish swam to the beacon in 4.4 seconds, showing they had remembered the association between food and the beacon for at least six days.
One of those things that was often repeated like an urban myth was that fish in an aquarium couldn’t feel confined because once they crossed from one side of the tank to another they already forgot where they had been. Since memory’s main purpose is learning it makes one wonder the extent to which tank fish do some at least primitive thinking.
Like sands through an hour glass so are the regular reports on the progress in the efficient artificial production of hydrogen fuel, Solar cell directly splits water for hydrogen
Plants trees and algae do it. Even some bacteria and moss do it, but scientists have had a difficult time developing methods to turn sunlight into useful fuel. Now, Penn State researchers have a proof-of-concept device that can split water and produce recoverable hydrogen.
“This is a proof-of-concept system that is very inefficient. But ultimately, catalytic systems with 10 to 15 percent solar conversion efficiency might be achievable,” says Thomas E. Mallouk, the DuPont Professor of Materials Chemistry and Physics. “If this could be realized, water photolysis would provide a clean source of hydrogen fuel from water and sunlight.”
As they say this is just proof of concept, but they’re still using expensive catalysts and the efficiency is only 0.3 percent. I wish them luck. It is the ultimate irony that we literally live in a sea of fuel ( hydrogen) and as of yet can’t find a way to extract it in a clean cost effective manner.
