Not that anyone ever actually follows a link and reads what is there, but I recommend that all the "non-believers" here take a look at Seaglider. Or follow this google search for even more.
Seaglider applies much the same principles as this vehicle but to an underwater environment. It has a small onboard power supply, but it alternately uses gravity and bouyancy to propel itself.
I may not be an Aerospace Engineer but I am an Ocean Engineer and Fluid Dynamics in air is the same as Fluid Dynamics in water. Just change your value for rho.
Fresh Gear on Tech TV is running a story about an Electroactive polymer being explored for personal power generation for the military. Right at the end of the story they address other uses for this polymer including using a thin layer of this material to create a new type of loud speaker.
This article has a bit of the story as well as show times.
Alright, this isn't geeky science stuff (and I freely admit that I'm a geeky-science type!)and a little off track but it's good to see someone else uses cool space photos for their Windows background.
I've downloaded over a 100 images from AstroPix. I wrote a nice little batch file (sorry, not C++ or whatever. Just good old Apple BASIC from elementary school) that ensures I have a new screen background everytime I log onto my computer. If anyone is interested, just email me.
You are confusing issues here. Yes to get abundant life (crops, forests, plankton, etc) you need lots of nitrogen. But to get some form of life wouldn't need that much.
I agree, water DOESN'T, necessarily, mean life. But the converse seems to hold true ("Life means water.") Finding evidence of life somewhere else in the universe is pretty darn important. Why not look where there is water?
Since this started as a Kim Stanley Robinson thread, I steal one of his ideas and twist it. How about a giant sunshade (parasol, umbrella, what-have-you) blocking light to Venus?
Of course, it is far beyond our current capability, but what about a satellite in Venus orbit that occasionally seeds the Venusian atmosphere with the designer bacteria described above? (Reminds me of to facilitate plankton growth and remove environmental CO2.)
This reminds me of a friend I had at the US Naval Academy. As an Electrical Engineer he chose to work on a Rail Gun as his Senior Design Project.
About 3/4th of the way through the semester he came to my room raving about the "Break through" he had that day.
The next morning he went back to the lab only to find it completely cleaned out. All of his notes had been confiscated. He was told that the project was now classified "SECRET." As we, lowly midshipmen, only held "CONFIDENTIAL" clearances, he could no longer access his own work!
Slashdot Mirror
I thought the exact same thing. Cthulu Carts was "advertised" in the April Fools (2003) issue of Computer Games Magazine.
Not that anyone ever actually follows a link and reads what is there, but I recommend that all the "non-believers" here take a look at Seaglider.
Or follow this google search for even more.
Seaglider applies much the same principles as this vehicle but to an underwater environment. It has a small onboard power supply, but it alternately uses gravity and bouyancy to propel itself.
I may not be an Aerospace Engineer but I am an Ocean Engineer and Fluid Dynamics in air is the same as Fluid Dynamics in water. Just change your value for rho.
It was Heinlein that introduced me to Burroughs. Thank the gods for both of them. Btw: Heinlein died when I was 13.
Ah, but you missed your chance. Look at the original again. Now think about working in "an old organ in the back ground."
I know this is off topic, but I'm really curious what this crowd thinks are the best countries in which to live and work.
Fresh Gear on Tech TV is running a story about an Electroactive polymer being explored for personal power generation for the military. Right at the end of the story they address other uses for this polymer including using a thin layer of this material to create a new type of loud speaker.
This article has a bit of the story as well as show times.
Alright, this isn't geeky science stuff (and I freely admit that I'm a geeky-science type!)and a little off track but it's good to see someone else uses cool space photos for their Windows background.
I've downloaded over a 100 images from AstroPix. I wrote a nice little batch file (sorry, not C++ or whatever. Just good old Apple BASIC from elementary school) that ensures I have a new screen background everytime I log onto my computer. If anyone is interested, just email me.
Please see this great NASA site with pictures showing that it's not a face.
Of course, I fully expect a reply that this is all just a government sponsored cover-up/conspiracy.
I could be wrong (and please feel free to correct me!) but there is a pretty big difference between the northern and southern hemispheres on Mars.
The northern hemisphere is much lower. A hypothetical ocean on Mars would cover much of the northern hemisphere while leaving the south high and dry.
Also the polls themselves have different amounts CO2 ("dry") ice.
You are confusing issues here. Yes to get abundant life (crops, forests, plankton, etc) you need lots of nitrogen. But to get some form of life wouldn't need that much.
I agree, water DOESN'T, necessarily, mean life. But the converse seems to hold true ("Life means water.") Finding evidence of life somewhere else in the universe is pretty darn important. Why not look where there is water?
Since this started as a Kim Stanley Robinson thread, I steal one of his ideas and twist it. How about a giant sunshade (parasol, umbrella, what-have-you) blocking light to Venus?
Of course, it is far beyond our current capability, but what about a satellite in Venus orbit that occasionally seeds the Venusian atmosphere with the designer bacteria described above? (Reminds me of to facilitate plankton growth and remove environmental CO2.)
This reminds me of a friend I had at the US Naval Academy. As an Electrical Engineer he chose to work on a Rail Gun as his Senior Design Project.
About 3/4th of the way through the semester he came to my room raving about the "Break through" he had that day.
The next morning he went back to the lab only to find it completely cleaned out. All of his notes had been confiscated. He was told that the project was now classified "SECRET." As we, lowly midshipmen, only held "CONFIDENTIAL" clearances, he could no longer access his own work!
He got an "A" on the project.