Well actually, they (the cooling industry) have started using butane in fridges instead of R134a. It has excelent cooling capabilities, dirt cheap and has got a low boiling point - Only downside is that it is extremely flammable, which is why it's only used in smaller cooling devices such as fridges.
I work with R134a everyday, and i don't think it's all that crappy - At least it doesn't contain any Chlorine (Chlorine is
very
bad news for the ozone layer. One molecule can destroy millions of ozone molecules)
When the universe was young, the first stars were born "shortly" after the big bang, there weren't any of the heavy metals (such as iron, silver, gold uranium) in the universe, just gas.
As the first og the stars started to collapse into super novae, the sheer pressure formed those metals, which our soceity is so dependant of.
It has taken several generations og stars to produce the metals and minerals which we are dependent on today, but the extra-solar systems we are observing are mostly populated by gaseus (sp?) planets.
Since the universe is still "young", might the generational gap be unevenly destributed? Maybe there are intelligent life on nearby stars, but they don't have the raw materials to construct anything that can be detected by our civilization.
Maybe we are some sorta fluke: being in a young, gaseous part of the universe, but with lot's of metal and minerals at out disposal?
Slashdot Mirror
I work with R134a everyday, and i don't think it's all that crappy - At least it doesn't contain any Chlorine (Chlorine is
- very
bad news for the ozone layer. One molecule can destroy millions of ozone molecules)...And ASFAIK, in Italian Sega is slang for masturbation...
Now You're Playin' With Power
When the universe was young, the first stars were born "shortly" after the big bang, there weren't any of the heavy metals (such as iron, silver, gold uranium) in the universe, just gas. As the first og the stars started to collapse into super novae, the sheer pressure formed those metals, which our soceity is so dependant of. It has taken several generations og stars to produce the metals and minerals which we are dependent on today, but the extra-solar systems we are observing are mostly populated by gaseus (sp?) planets. Since the universe is still "young", might the generational gap be unevenly destributed? Maybe there are intelligent life on nearby stars, but they don't have the raw materials to construct anything that can be detected by our civilization. Maybe we are some sorta fluke: being in a young, gaseous part of the universe, but with lot's of metal and minerals at out disposal?