kken

28 ms·

241.
by kken 12y ago
>The problem is with carbon in general is it has a band gap The band gap is not a function of the element alone, but mainly of the crystal structure. Different allotropes of carbon have vastly different band structures. Diamond has a hig
242.
by kken 12y ago
"instruction set" would be more precise. There isn't a single ARM instruction set, as it is with x86, for exmple. There are many different versions of it. Sometimes there are even significant variations within a family. e.g.
243.
by kken 12y ago
I had to laugh
244.
by kken 12y ago
There are so many different variants of ARM assembler, it is difficult to keep track of them all. Somehow ARM managed to get away with it. I have been hacking Assembler level on many different architectures. Cortex M0 is the first one where
245.
by kken 12y ago
>Secondly, having worked for semi: there's a lot of conservative force holding back development. We could have had current tech with much less worries than we have now if they didn't respond so allergically to everything that l
246.
by kken 12y ago
HP and the Memristor is a good PR story. Unfortunately there is not too much beef behind it. The Memristor is actually the same as an RRAM element (Resistive Random Access Memory). Companies other than HP have started working on it long bef
247.
by kken 12y ago
Title is highly misleading. The battery works by oxidizing Aluminium. So you actually recharge it by replacing Aluminium oxide with elemential Aluminium, which involves melting down the old battery and using electrolysis to seperate Aluminu
248.
by kken 12y ago
Misleading title. Semiconductor lasers are in general already >30% efficient there is no way to make a laser 250x more efficient. The researchers only improved a special type of laser (polariton laser)
249.
by kken 12y ago
The code style is making me nervous. Why use ++x over x++ when incrementing variables?
250.
by kken 12y ago
The real reason why GE is turning to "industrial internet" is because European firms have started a similar initiative previously, called "Industry 4.0": http://en.wikipedia.org/wiki/Industry_4.0 Of
251.
by kken 12y ago
>Gruyère Also, cheese.
252.
by kken 12y ago
Norway has quite a bit of hardware startups, which are otherwise rare in Europe. It's not all about Oil. Notable examples are: - Nordic VLSI: Wireless ICs like nRF24L01, Basically responsible for the Blue Tooth Low Energy standard. - A
253.
by kken 12y ago
Are these real? They look like concept art. Amazing concept anyways.
254.
by kken 13y ago
You are being really naive and unfair here. Saleae suffered a lot from chinese copycats. People copied their hardware for pennies, while saleae was fair enough to provide their software without copy protection. I think it is only fair they
255.
by kken 13y ago
Ok, this one definitely needs chrome to work correctly. Horrible clicking in Firefox.
256.
by kken 13y ago
Not sure, but about that "taking down ancient buildings" thing, I believe the UK helped Germany a lot in that, although pretty much unasked for.
257.
by kken 13y ago
€1000 per month for what? In Berlin, 1000€ would seem excessive.
258.
by kken 13y ago
>dull, miserable, offensively expensive None of these apply to Berlin. Flamebait much?
259.
by kken 13y ago
So this is a boxed RPi with an Amiga Emulator? There are a number of projects out there emulating an Amiga in a FPGA. That makes much more sense.
260.
by kken 13y ago
Too easy. Score 55200 in first game.
261.
by kken 13y ago
In general, I believe the premise of this is a bit off. You often see that people from the west try to design "low-cost" devices for developing countries by introducing paradigm-shifting changes to the design. But this rarely seem
262.
by kken 13y ago
Its a micro glass lens as described here: http://arxiv.org/ftp/arxiv/papers/1403/1403.1211.pdf
263.
by kken 13y ago
Ca 0.50$ is actually only the Material cost. This number does not include cost for manufacturing, development, distribution, quality control, etc.
264.
by kken 13y ago
Very cool! Any more detailed information about its construction? I bet they would also be interesting to a different audience - as toy. Edit: Found this http://arxiv.org/ftp/arxiv/papers/1403/1403.1211.pd
265.
by kken 13y ago
Its an Aluminium tube with a Lithium battery.
266.
by kken 13y ago
Horrible spelling, no content.
267.
by kken 13y ago
Yes, especially in the US. There is also a huge bureaucracy problem. Even at the current cost of PV and the current electricity prices, residential PV generation amortises in areas where a lot of air conditioning is required. This basicall
268.
by kken 13y ago
PV "breakthroughts" are a dime dozen. Usually things quickly break apart due to these reasons: 1) The solar cell has to stable for 20 years in the field, not the 5 minutes it requires to collect the data for your publication. 2) Y
269.
by kken 13y ago
Clickbait much?
270.
by kken 13y ago
I am not sure, that is a good question. People have shown that it is possible to hack a nRF24L01 into sending BLE transmissions. But there are limits. It could be possible to sniff parts of BLE traffic.

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