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Comment: Re:Why the fuck is this on Slashdot? (Score 1) 571

by geogob (#47548013) Attached to: Satellite Images Show Russians Shelling Ukraine

Like any other site, this site is about that what the editors choose. Not the people consuming the information. It is the case for any type of media... why would you believe it is any different with this one?

You are always free to write your thoughts to the editors or to the editor who accepted the submission. Ranting about it is probably the least helpful thing one can do.

Comment: Re:But it gives the driver the wrong impression (Score 1) 243

by geogob (#47192019) Attached to: New Car Can Lean Into Curves, Literally

That's why the car is filled with other systems doing the feeling and adjusting for the driver, systems such as the ESP. it becomes essential in cars where de driving feeling disappears.

But its Mercedes... I drive regularly fully equipped E class Mercedes. It's awful. Its full of systems driving for you and taking decisions for you... It can go as far as breaking you on the highway. These cars are at 90 degrees of the "driving feeling" concept.

Comment: Re:cheap webcam (Score 2, Insightful) 54

by geogob (#47171407) Attached to: SpaceX Landing Video Cleanup Making Progress

The technical challenges of running a telemetry link with something falling through the sky from a moving aircraft has little to do with that of plugging two televisions together over a wired network. I'd expect the bandwidth for the video to be, in fact, comparable to that of a dial modem, especially considering that the bandwidth is shared with a lot of other housekeeping data which are probably much more important and useful than the video feed.

Comment: Re:Google has NO responsiblity whatsover (Score 4, Insightful) 138

Don't like what A said about B? Take it up with A.

I don't know in what world you live, but in the real world, there are so many hurdels to that process that it's in many case impossible (Understand, for example, no juridical basis or not affordable).

It has long been known that what you post online[...]

How about what is online and you didn't post yourself? Oh yeah, take it up with A.

I find your view of the world quite naive. I am not convinced that the solution requested by the European Court the best is, but it's a step in the right direction.

Comment: Re:Man-portable supercooling? (Score 1) 298

by geogob (#47068589) Attached to: Is It Really GPS If It Doesn't Use Satellites?

They are not using helium as refrigerant, but as pressure transfer medium in a pulse tube for the Stirling cooler. It allows you to decouple the compressor from the cold finger and avoid the need of mechanical piston on the detector side. These detectors typically run between 40 and 80 K, too cold to use nitrogen as transfer gas, hence the use of helium. In any case, the operation range is far from the super cooled case.

Comment: Re:Man-portable supercooling? (Score 1) 298

by geogob (#47068469) Attached to: Is It Really GPS If It Doesn't Use Satellites?

No they don't. Thermal imagers typically work around 50 K (based on HgCdTe sensors). This is easy to reach with a portable device, but isn't anywhere close to super-cooled. Higher performance thermal imagers may run at 3 to 4 K, cooled with liquid helium. There you are already far away from the portable solution, and again not even close to super-cooled.

To reach super cooled temperatures (we are speaking of mK, if not uK or nK), you'll need a truck to move the stuff around. Just the ultra high vacuum vessel and the turbo pumps, allowing you to reach vacuum better than in orbit at 200 km altitude, are enough... and you haven't started to cool yet.

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