Comment Re:Another terrible summary (Score 1) 225
the second heaviest of the noble gasses
For what it's worth, actually it's "gases". "Gasses" is a present tense verb.
the second heaviest of the noble gasses
For what it's worth, actually it's "gases". "Gasses" is a present tense verb.
it would overtun and eviserate that last remaining shred that mainstream religion(mormons ans scientology don't count)
Along those lines, it should be pointed out that in the laser (spectroscopy) community, if we want a window that's transparent in the UV and visible, we typically use sapphire. Glass (ie BK7, float glass, or the like) absorbs UV, and the alternative, quartz, is not as strong. So it would make sense if they wanted to switch to sapphire for its strength, but didn't consider its UV transparency. Has anyone opened the camera up to see what else is between the sapphire and the element?
Yeah that's pretty fantastic - thanks for the link.
Yeah I saw the videos, which tell me that it's hard to knock Big Dog over. But I guess I was wondering what would happen if you knock it completely on its side, whether it can upright itself.
That's very good point about the power - wonder how much power this sucks up, but I'm sure it's much more than a rover of comparable size.
One thing I'm wondering about in regard to Big Dog is whether it can actually be knocked over. More importantly, if we were to lay it down on its side, would it be able to get back up? If I'm relying on it in the battlefield or as an emergency responder, the last thing I want is 400 lbs. of my supplies getting stuck on the back of a robot that's ended up on its side and stuck. If it can get back up, then I'd say we have something that would be an awesome replacement for a Mars rover, since it can certainly climb steeper slopes, and I don't have to worry about it getting stuck anywhere.
Monochromatic is not a prerequisite for laser light. Coherence and leverage of a population inversion are requirements for it to be laser light, with the latter being sometimes loosely applied. This pulse is as much a laser emission as that from any other, because it is coherent. Laser emission can come from continuous wave lasers (like most red laser pointers), which can be incredibly monochromatic (sub-MHz bandwidth) or from pulsed lasers, which can be incredibly non-monochromatic (many nanometers bandwidth).
a real bio-chemical engineer could easily get creative enough to make highly addictive chemicals that are hypnotics and have embed-able dispensers that release only when they receive encrypted transmissions
Uh, reference please?
Being in the field of biophysics, I can say that even the most advanced bioengineering institutes in the world, with tens of millions of dollars in funding, are very, very far from realizing anything like this. Hypnotics aren't drugs that hypnotize and allow someone to control you - they sedate and calm you, but they are frequently highly addictive. If by embed-able dispensers you mean macro-molecular sized release capsules, we are very close to realizing them, but controlling them with an encrypted transmission is impossible. If you mean larger RFID-based release mechanisms, they exist, but good luck getting them into the victim's body, or establishing an addiction.
It will almost certainly be more economical to make something like a nerve agent using old fashioned chemistry. You can scale up a synthesis to bulk volumes much more easily than waiting for a printer to print out a bulk amount of product. Reaction rate (or reaction time) is independent of volume (ideally), whereas printing time will go linearly with volume.
How many 3D Libraries of Congress per cubic centimeter will it be able to print?
Commuting by train from Connecticut to Harlem (NYC), then taking a bus to Columbia U. 100 minutes in total, each way. Taking the train is pretty great, though - you can relax, use your laptop (even plug it in if needed), catch up on emails and talk to folks. On some trains there's even a bar car. It definitely beats driving in, even if I'd save a few minutes on the drive.
I'm guessing there's a good reason, but do you by any chance know why NASA didn't test the final optical alignment of Hubble on the ground before it launched? Why not lay the thing on its side and point it at something really far away to make sure everything was in focus (or just point it up at the night sky)? Too much structural warping due to gravity?
In fact Science and Nature do peer-review their articles. The first step is a decision by the editor about whether or not it fits with the journal/has the scope of a Science/Nature article. That's usually the hard part to get by (I've heard 10% of articles get by this stage). Then it goes out for review, where at least two, sometimes three referees review it. This is true for short form ("reports") and long form ("research articles") papers.
I remember hearing once that the reason why Ted Williams had such an unbelievable hitting ability was that he could see lace rotation on incoming pitches with better fidelity than other batters. It had something to do with his eyes' "refresh rate", which was also fast enough that he had trouble watching movies because he could see the individual frames flashing by. Not sure if it's true, but makes for a great story.
I agree that it sounds like a scattering mechanism, but in that case how is it different than a simple matte finish? Matte finishes are just roughened enough to scatter rather than reflect images. I was hoping they'd announced a near perfect AR coating method.
The cost of feathers has risen, even down is up!