Location: In my office, at the Ministry of Awesome!
Exp:
Quote:
Originally Posted by photon
Well in your example, gravity has something to do with it not flying around, along with the mass of the thing you are tying and the length of your rope.
If that's not how it works, if you're just dropping a rope from a station, what's the counterweight for?
Centrifugal force is exactly how it works, at least for the common idea of space elevators:
From Wikipedia:
I guess you could have the teather drop down and not be under tension, but you'd need the counterweight to offset the mass of the rope being dropped still and I don't know how that would work since the counterweight would just move away in a different orbit as you reeled it out to counter the tether dropping. Some kind of station keeping rockets, I don't know that seems a LOT harder to pull off. I haven't thought much about a space elevator that wasn't under tension.
Hmm, good to know.
I'm ceratinly no expert, I stand corrected.
__________________
THE SHANTZ WILL RISE AGAIN. <-----Check the Badge bitches. You want some Awesome, you come to me!
For sure, even a conservative estimate would put a space elevator at an order of magnitude cheaper per kg vs. rockets.. and two orders of magnitudes if you listen to the pie in the sky guys.
I would so totally name my Space Elevator "pie" for exactly this reason.
Scientists show that manmade nucleic acids can replicate and evolve, ushering in a new era in synthetic biology.
Synthetic genetic polymers, broadly referred to as XNAs, can replicate and evolve just like their naturally occurring counterparts, DNA and RNA, according to a new study published today (April 19) in Science. The results of the research have implications not only for the fields of biotechnology and drug design, but also for research into the origins of life—on this planet and beyond.
From this new data they have calculated the mass of material in the vicinity of the Sun, in a volume four times larger than ever considered before.
"The amount of mass that we derive matches very well with what we see — stars, dust and gas — in the region around the Sun," says team leader Christian Moni Bidin (Departamento de Astronomia, Universidad de Concepcion, Chile). "But this leaves no room for the extra material — dark matter — that we were expecting. Our calculations show that it should have shown up very clearly in our measurements. But it was just not there!"
__________________
"An adherent of homeopathy has no brain. They have skull water with the memory of a brain."
But the evidence for life may have been hidden in Viking’s data all along. A new analysis of the data collected by probes Viking 1 and Viking 2 suggest the missions found evidence of microbial life more than three decades ago.
It’s merely concrete evidence that there is a stark difference between Viking’s LR experiment data and the control experiment data. And it’s evidence that the Viking data tracks with biological rather than non-biological data. More study is necessary (isn’t it always?), but if the cluster analysis is to be believed then our first shot at detecting microbial life in the soils of Mars may have hit pay dirt--and we didn’t even realize it.
The Following User Says Thank You to troutman For This Useful Post:
At the quantum level, it's been known for quite some time that causality doesn't have quite the same weight as it does on our classical level. However, this thought-experiment turned real-experiment is still pretty astounding, and shows effect can come before cause.
They take two particles that are either entangled or not entangled. They then form two groups of scientists. One group is meant to decide whether to entangle the particles or not, the other is meant to measure the particles and discern whether they've been entangled or not.
However, the really cool part is that the group measuring for entanglement measures first, before the other group decides to entangle the particles or not, and the measuring group always finds what the other group later decides to do. Effect before cause.
Other cool experiments on the quantum level that reveal the inadequacy of our intuitive perception of time are the delayed-choice experiment and the quantum eraser.
__________________
"An adherent of homeopathy has no brain. They have skull water with the memory of a brain."
The Following 3 Users Say Thank You to HPLovecraft For This Useful Post:
Okay, one more thing, having to do with the dark matter problem I posted about earlier. In another new study, they've come to the conclusion that the companion objects around our galaxy (satellite galaxies, globular clusters, etc.) got there from a collision a long, long time ago. Unfortunately for the standard theories of cosmology that include dark matter, this isn't the case, as those objects got there after forming apart from our galaxy, individually, and then being "caught up" by gravity.
Quote:
Kroupa concludes by highlighting the wider significance of the new work. “Our model appears to rule out the presence of dark matter in the universe, threatening a central pillar of current cosmological theory. We see this as the beginning of a paradigm shift, one that will ultimately lead us to a new understanding of the universe we inhabit.”
He also notes that nobody has been able to find a dark matter particle yet, despite a slew of efforts around the world in all sorts of interesting configurations. Maybe they’re not finding it because it isn’t there?
The space shuttle enterprise is making its way to JFK Airport right now, and is going to be doing some low flyovers of important NYC locations. CNN will have live video of this.
__________________
But living an honest life - for that you need the truth. That's the other thing I learned that day, that the truth, however shocking or uncomfortable, leads to liberation and dignity. -Ricky Gervais
The space shuttle enterprise is making its way to JFK Airport right now, and is going to be doing some low flyovers of important NYC locations. CNN will have live video of this.
I hope they start shooting fireworks from their aft torpedo bay and a light show with their forward phaser banks.
<-----Check the Badge bitches. You want some Awesome, you come to me!
