[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: dinosaur cloning and time travel
Jonathan R. Wagner wrote:
> As we REALLY stray from dinos...
> Brandon Haist wrote:
> >In the 1960's the U.S. Navy experimented with time travel.
> The atomic clock anecdote you mention was probably taken out of context. It
> probably referred
> originally to a relativity experiment
I remember being interested in the experiment at the time. It was a relativity
experiment and had nothing to do with time travel. The outcome confirmed that
Einstein had a pretty good handle on the universe and implied it was worth
> >Today my Physics teacher said that you could not ever make a 100% perfect
> >heat engine, it would defy the laws of Thermo Dynamics (you couldn't convert
> >100% of your heat into 100% work), it was impossible. I asked him "wasn't
> >that what people said about flying? Or Visiting the bottom of the ocean?
> >Or men on the moon?
He said this because the background radiation temperature of the universe is not
zero. It's about 4 degrees. Therefore the maximum possible efficiency for a
engine is on the loose order of 99%. I say 'about' and 'loose' because I'm
from memory and haven't troubled to check the actual numbers recently.
your Physics teacher appears to know what he's talking about, and it may be
listening to him.
> Ok, there's "can't" because you don't believe it is possible, and
> "can't" because the nature of space/time forbids it. Two different