Archive for the ‘Science’ Category
The end of the universe
Universe Today has a post outlining the future end of everything.
But a species can last tens or even hundreds of millions of years. So how can we predict when our number will be up?
There’s no way to know, but there’s a calculation that can help. It’s called the Doomsday Argument, developed in 1983 by astrophysicist Brandon Carter. According to Carter, if you assume that half of the humans who will ever live have already been born, you get approximately 60 billion people. If you assume that another 60 billion are yet to be born, our high population levels only give us another 9,000 years or so. Or more precisely, there’s a 95% chance that humanity will have ended by the year 11,000.
And it continues going up to the end of light through to 10^100 years from now, at the end of the proton.
Football science facts
Just in time for the Super Bowl Cosmic Log has a post explaining a few tidbits of the science behind football.
…when a receiver catches a “bullet pass,” it’s the equivalent of stopping four actual bullets fired from a .44 Magnum.
Fortunately, you don’t have to worry about a football going through somebody like a real bullet.
Everyday pinhole lens
I’m not sure if lens is the right word, but I don’t think camera is either. Anyway, Julianne shows us the unlikely place you’ll find a pinhole lens around your home for the next solar eclipse (just remember its still bad to look directly at the sun, even through a pinhole)
Bending Spacetime (i.e. seeing gravitational attraction)
I should have kept track of the source to this link so I could link back to it; but I lost the source after I thought I had sent it to myself.
Bending Spacetime in the Basement No idea how legit the site is; but the other content on there seems decent enough. Cool videos either way.