This month's Challenge Question:
Most of our satellites have an orbit very close to the end of the atmosphere. This means they are subjected to an air drag, just like cars on Earth. In the case of cars, the drag slows down the speed. However, in the case of satellites, the drag actuall
A recent article, posted on MSNBC on April 22nd of this year, suggests that officials are neglecting to react to the global carbon budget as seawater acidity rises. Research is lacking needed funds, perhaps because the only solution to this problem is to stop burning fossil fuels. As the shell fish
We already knew Adobe was "moving on" after Steve Jobs fired his anti-Flash salvo this week, but here's something new: As part of an internal eat-your-own dog food effort, all Adobe employees could be given an Android phone. More »
Call me crazy, but I get the feeling Brazilian designers Fernando and Humberto Campana watched a lot of the Addams Family when they were kids. More »
Design - Art - Business - Business Services - Graphic design
Wearing this bottle opener ring out to your favorite bar will not end well. More »
Recreation - Collecting - Bottle - Glassware - Shopping
3D desktop company BumpTop, profiled here in the past, has been acquired by Google for an undisclosed sum. More »
Google - BumpTop - Search - Search Engines - Microsoft Windows
Bolden, Griffin Display Space Policy Differences, Aviation Week
"It has become much to fashion lately to compare Constellation to Apollo, with the thought of course that we don't want to do anything that might look at all like Apollo," said Griffin. "I wonder about that sometimes because Apollo made me pretty proud to be an American. That drive has sustained a couple of generations of space professionals. So, today we have a space policy choice confronting us. Do we want to do innovative, game-changing technologies? Or, do we want to do something that might look a little bit like Apollo?'
R1=30Ω R2=20Ω R3=20Ω R4=10Ω R5=40Ω R6=10Ω I4=4A
I need to calculate U (total voltage)
schematic:
http://i43.tinypic.com/2jvbx2.png
I tried this:
R23=1/(1/10+1/20)=10ohm
R234=10+10=20ohm
R2345=1/(1/R234+1/R5)=1
Now that BP and the USCG have concurred that 200,000 gallons per day are leaking and that all attempts to seal the leak are fruitless.......what do the folks on CR4 have to say about a course of action.
How do you create a histogram and a s curve using primavera6?
I am sorry to report that the latest profession to be made obsolete by robots is ice sculpting. Cold-hearted explanation follows: More »
3D modeling - Robotics - Visual Arts - Arts - History
Scicurious, a blogger at Neurotopia with a PhD in physiology, writes,
The molecule is caffeine, and the tattoo itself was designed by artist Glendon Mellow of The Flying Trilobite. I got it to celebrate my PhD.
Why caffeine, you ask?
1) I had a friend once tell me that my friendship was like a hot cup of coffee. Warm, vivacious, stimulating, and comforting. It was one of the best compliments I ever received.
2) I have spent the last six years of my life studying drugs in various forms. Caffeine always spoke to me as a stimulant, because it is so different from other traditional drugs classified as stimulants. I’ve always been a little different myself.
3) I also spent the past six years studying various neurotransmitters. I will spend more years studying different neurotransmitters. Which ones I study and why will change over time, but caffeine will be with me through all of it. 
Click here to go to the full Science Tattoo Emporium.
I am looking for face spline design it is similar to face gear the only difference being there is no relative motion . is there a standard for it
plz tell about the difference between metering CT and simple CT.explain either the diffrence occures in number of windings or something else.thanks
This spartan shelf contains all your traditional iPhone/iPod touch docking essentials and little else. Speakers, dock, axillary out—that's about it, with the caveat being it's also a wood shelf capable of supporting about 55 pounds. More »
Smartphones - Handhelds - iPhone - Shopping - Accessories
The Four Flavors of Lunar Water, Paul Spudis, Air & Space
"New studies of lunar samples, along with results from several missions in recent years, have given us a revolutionary new picture of water on the Moon. Study of volcanic glass from the Apollo 15 landing site in 2008 demonstrated that tiny amounts of water (about 50 parts per million) are present in the interiors of these glasses, suggesting that the lunar mantle (whence they came) contains about ten times this amount. This was a startling result, considering the extreme dryness of other lunar samples."
Scientists Say Ice Lurks in Asteroid's Cold Heart, NASA
"Scientists using a NASA funded telescope have detected water-ice and carbon-based organic compounds on the surface of an asteroid. The cold hard facts of the discovery of the frosty mixture on one of the asteroid belt's largest occupants, suggests that some asteroids, along with their celestial brethren, comets, were the water carriers for a primordial Earth."
A couple of things that escape me follow;
Back in parking only - At what point does this eliminate backing up?
In at least one state the state version of OSHA requires that in a confined space, both the attendant and the entrant must be CPR qualified. Is that rational?
At what point d
