eDISCO

Most traditional generators (think CCGT, nuclear, hydro) run in synchronous mode. Which means the generators spins with rpm proportional/equal to the network frequency. For 50Hz that would be 3000rpm. When the total electricity demand exceeds the supply, the kinetic energy of spinning generators is converted to electricity which slows down the generator rpm, which reduces the frequency. All synchronous generators on a given network spin at the same frequency, so when the demand is too high all of them slow down a bit.

Interesting proposition. 1. Why would your process be more cost effective and/or efficient than the commercially available processes for alcohol production? Surely if the magic sauce is the nanotube alcohol/water separation then conventional alcohol sources from fermentation will start using it at some point and will be able to produce same fuel but cheaper and/or more efficient. Maybe you can show that [photosynthesis -> organic matter -> fermentation] is less efficient than your process using renewables as input?

2. Why use CO2 from Air? At 400ppm, there is 500 times less CO2 in air than in any powerplant exhaust, so using the same state of the art separation, for the same throughput, your equipment should be ~500 larger? That seems like a capex waste.

Previous discussion on HN about this article: https://news.ycombinator.com/item?id=7166207

I was just wondering if we had technology available at that time for a self-sustaining mission that could last 350+ days, while supporting the crew of 3 (or 2?) and fitting the weight limits...

There's a clever way to destroy data on SSD: just overwrite your (encrypted) hard drive encryption key, then even though the data remains, the key is lost forever. I think most modern SSDs come with the feature.

More info in this question: https://superuser.com/questions/986387/why-does-my-ssd-inter...

I tend to use Gnome Do[1] as my launcher. I haven't observed any noticeable battery drain (on Arch) despite the fact that it runs in background.

There's a neat comparison of different launchers available on Wikipedia[2].

1: https://en.wikipedia.org/wiki/GNOME_Do 2: https://en.wikipedia.org/wiki/Comparison_of_desktop_applicat...

As someone mentioned previously the Alt + F2 (or F3) works well enough in XFCE most of time.

I'll give Cerebro a try...

"The non-designer's design book : design and typographic principles for the visual novice" - very easy to follow.

It was obvious since the last referendum results were published that SNP will push for another referendum whenever they see that as politically benefical, this time riding on the anti-tories wave that partially helped the Brexiteers. And the independence campaign may even be successful. Even if it isn't, it will help SNP to gain a majority in local government in 3 years time...

I understand that the article is mostly PR, but to demonstrate effectiveness of the filter, why not also present null hypothesis, where no A/C is activated in the car and/or a common car A/C filter.

Great idea. Reminds me of a sci-fi movie (which one?).

I am using IFTTT to add rss feeds to Pocket, but this seems to be less complicated to use!

You know it's finished when you are dead. (A bit rough interpretation of Sartre?)