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That's obviously not true. Proof: you are here to post this. Thus you and your forebears have assessed risk adequately to have survived. QED Autonomous automobiles must be virtually flawless because society is afraid of anything it doesn't understand and will pounce on any incident in which the...

Your Tesla will see in the dark! X-ray vison! I'm afraid you are the victim of showmanship, technical naivete and Elon's faith in what AI can do. Photons knock electrons photo sensors up into the conduction band (eyes or cameras) where they can be collected. Heat does this too. If you go into...

Uh, well, yes. That's how your eyes and cameras work. Don't know what AI has to do with it. If you can't see the lines a camera probably can't either unless it is sensitive to wavelengths appreciably bigger than the fog droplets. Those cameras get expensive.

I'm trying to remember. Obviously it was some article on Teslerati or Elecktrek or some place like that and it did not say "All Teslas will have radar starting with...". It was something like Tesla had applied to the FCC for a frequency authorization but I don't even remember well enough to say...

No. How can it? If it can't see the white lines it is helpless and shuts down. There is a stretch of interstate that runs south from Scranton through hill and that stretch gets incredibly heavy fog in the fall (and probably the rest of the year too). I've been through there twice once before...

Whether or not adding a sensor improves measurement depends on the sensor's noise characteristics and how adding it changes the "DOP". If you try to measure the distance to the church by shooting the top of the steeple with a sextance, move towards it a few feet and repeat you will get an answer...

Well certainly raindrops are like little targets and so introduce "clutter" but over the years engineers have come up with lots of ways to combat clutter. As I recall (and it has indeed been a while) simply going to circular polarization minimizes rain clutter. Also rain drops don't scatter or...

I guess you haven't been following Rivian Forum recently. Posts are pouring in reporting problems of various degree with the CCS network in general - not just EA though they get their share of black eyes too. In many of the gripes the user eventually got a charge but after extensive interaction...

Airplanes? Boats?

One external source of cold that is, usually to our detriment, always available in a refrigeration system is the suction line. If you could replace that with a coaxial line you could get some cold from it. Of course this would change the superheat at the compressor and you would have to open the...

No. Only draws 45 Watts (now that's for a 30° F ∆T). A conventional fridge of about that size draws a little less for a bigger ∆T but this thing is pretty amazing. Yes, that's what a hear pump does. This is a joke, right? The heat that gets pumped through gets blown away by the fan(s).

Wow! That cooler represents a considerable improvement in efficiency over what Peltier coolers could do 30 years ago. I guess that's to be expected. Yes, it only goes to 40 °F and yes, it uses a little more power than a comparable compressor type refrigerator/freezer but it is much less...

Peltier device? I don't think anyone is suggesting those. They are inefficient (COP = 0.64 max @˙∆T = 0 for one commercial device I looked up) that they are only used in systems, commercial and consumer where a small mass is to held to a very precise temperature (e.g I have a density meter that...

As I said in my previous post I much favor a drop in solution and I think jBee is leaning that way too. Tapping into the refrigerant circuit is, however, much more interesting to think about.

They don't pull much power either. I really think this is much preferable to any scheme which involves opening the existing system. Though it is theoretically possible to do that it just seems too risky, What is wanted is a custom ARB (or other OEM) fridge of the type those OEM make that is...

You could do it that way but it's clear that whenever the compressor is running the hot gas has to go either to the in cabin condenser or the liquid cooled one so there will always be a supply of liquid refrigerant available at the input to either in in cabin evaporator or the chiller. This...

Oh. Didn't see that you edited in the link. Thanks. I read about half of it and I don't think they demonstrated that people don't use probabilities for decision making at all. What they did demonstrate, in my interpretation, is that they use them all the time but that they don't always use them...

Well a lot of trash does get published, even with peer review but I am not expressing an opinion on the worth of a paper that I have not read in a field that is not in my area of expertise. I am just saying that it is IMO contrary to common sense (not at all intuitively obvious) that we would...

While the theoretical COP at -10°C is about 9.8 in actual systems we can build economically closer to 1 is to be expected. I just noticed, with great interest, that the heat absorbed by the radiator does NOT bring about a phase transition as it does in a conventional heat pump but simply warms...

Let me start with a big disclaimer: I have no experience in psychology (other than being a brain owner, wiring Skinner boxes in the uni's psych lab for beer money and supervising undergraduate pych labs). I certainly haven't seen that paper but I am aware that "expectational reasoning" has been...