Radio reflection off a flat surface reverses the direction of rotation of a circularly polarized signal. A CP receiving antenna will reject them. A twice-reflected signal will go back to the original direction of rotation, but it is much weaker after two reflections.
There are some values of Satoshi that would make some people change their minds: if it were an NSA operation, or a neo-Nazi group, or Scientologists, or Intellectual Ventures.
Personally, I try pretty hard to not use things created by assholes, even if the things themselves are good. (You can't avoid things made by people with abrasive personalities, but I don't think I regularly use anything made by a genuine asshole.)
The rough tone on lkml (supposedly) reflects the gap between people who want to make something that's nontrivial and used by many people and the smaller number of people who are actually able to do so. Setting yourself up as this kind of gatekeeper means you have to be non-likable towards a lot of people even if you're a perfectly nice person.
Conversely, someone can be an asshole while showing spotless behaviour to the people they meet.
Are you being serious here? (I cannot tell.) A controller cannot prevent structural damage to the electrodes. I once did research on using lead acid for grid applications. Shallow cycling doesn't save you much. You may double your cycles but if you get just half the energy from each cycle, then the battery's lifetime energy return is not all that dramatically improved.
Ugh. Apple can go to hell. I use F.lux as my main point about the problems with Apple's walled garden. It's available GRATIS for iOS but Apple censors it so you have to jailbreak. The idea that Apple works to thwart this means they are actively hurting people. This specific issue was step one on my long journey to GNU/Linux and leaving Apple and proprietary software behind. Yes, F.lux (Redshift for me now on Linux) is that valuable in my opinion.
same! when it comes to my livelihood i try not to skimp. i won't hesitate to splurge on a desk chair or a bed for instance. flux falls in that category of things i would unquestionably pay good money for.
Most companies are accepted before their product works. But you sound like you haven't even started trying to build it yet. Start building something. Hacking together a crappy prototype always brings surprising insights.
Many founders are in their 40s and some are in their 50s.
I do have something - but it is not very far along. Was wondering how far along it needs to be - we just have a rough working wireframe and an early prototype, but no customers. The impression I got from the article is that they did not have any/many customers either. So how important is to already have actual paying customers and users.
We got into YC before we had any customer, so it is possible. But personally, I would recommend that you wait until you have your MVP first. You don't want to spend half of YC building you MVP, since partners can't really help you defining your vision. What they are really good at is helping you optimize it.
Your employment contract may assign all inventions you make during the period of your employment to your employer, which will cause you a lot of trouble if the startup succeeds. The contract probably has a mechanism for excluding certain projects. At the least, you should get your startup on this list.
Some technical background: in addition to the propulsion electrical system, the Tesla has a conventional 12V electrical system for running lights, radio, door locks, computers, etc. This system is always on, unlike the propulsion power which is disconnected by a relay when the car is off.
The 12V system has a conventional lead-acid battery which is kept charged when the vehicle is running by an inverter running off the propulsion battery.
Presumably, the 12v inverter failed in this story so the lead-acid battery ran down. You'd get results similar in a conventional car where the alternator failed: gradually dimming lights, then suddenly no engine power.
Except the Tesla should be able to detect a failed inverter instantly. How would the conventional 12v battery failing cause a loss of engine power, and yet continue running the touchscreen and hazard lights for half an hour?
Lights and touch screens will still mostly work on half their normal voltage, but the propulsion control system is fairly conservative. Rightly so. Trying to keep going on flickering power could cause the control DSPs to behave erratically.
Indeed, you could imagine the system being able to give an earlier warning for this class of failure. Perhaps they'll be able to add it in a future software update.
I've had this exact scenario happen on one of my previous cars. The alternator was somehow overcharging the battery. At some point, the battery acid would basically be boiling over (the battery case was physically bulging out), and no longer function at its job of carrying power to the rest of the electronics in the car. The throttle could no longer operate, so the car just stopped moving, spontaneously in the middle of the road I was driving on. No battery sensor would detect this as there was no voltage drop before the battery stopped functioning, and I could still run the radio and headlights for a couple minutes even though the car couldn't be moved. Replacing the battery didn't fix anything (the first shop I took it to didn't realize the battery wasn't the issue since the alternator was putting out power), replacing the alternator did.
It's tricky. You don't necessarily have to exceed the voltage range that would normally be seen to overcharge the battery, just fail to regulate the output correctly. It's correct to provide a certain extra voltage/amps when the battery is not fully charged and you turn on headlights and fans; it's not correct to put out that same power 100% of the time.
It's probably possible to build a sensor that tracks all this, but normal cars with the same 12V system don't have that sensor either. If the alternator goes the way mine did, you won't even see a battery indicator on the dash (even though it has such an indicator), you find out about it when your car stops moving in the middle of the road.