avhon1

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331.
by avhon1 6y ago
I've found Solvespace to be a very nice OSS alternative to Sketchup for 3D printing. Perhaps it's good for woodworking, too. http://solvespace.com/index.pl Here's a good tutorial: https://www.farwi
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by avhon1 6y ago
You could even be ambitious enough to use multiple RTL-SDRs to do triangulation to the aircraft and see if it is where it says it is. Alternatively, you could do passive radar with RTL-SDRs to perform the same verification and also to find
333.
by avhon1 6y ago
I use Blender for video editng because I already know how to use it, I already have it installed on my computers, and because it has never been inadeqate. Blender doesn't have a ton of effects in the video editor itself, but you can re
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by avhon1 6y ago
PGP doesn't hide the fact that you are communicating with someone, but it will keep the content of your conversation pretty private.
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by avhon1 6y ago
The LeTourneau land trains were diesel-electric. What are you imagining being different?
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by avhon1 6y ago
Yes, my fantasy is less like "improving Amtrack" and more like "replicate Japan's Shinkansen".
337.
by avhon1 6y ago
Electrics are great for low-speed stop-and-go. They're not as good on a highway, though. 0% of the energy spent displacing air at 70mph is recovered.
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by avhon1 6y ago
I'm pleased with a YouTube video that visually, verbally, and efficiently explains the contents of a paper that costs $33 to read.
339.
by avhon1 6y ago
I think speed limits have informally (and unevenly) been rising to match the capabilities of new cars and roads. I visited a new area recently, and was shocked to see that traffic was flowing at 90 mph (!) in a 70 mph zone. I was glad I was
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by avhon1 6y ago
I think it's reasonably apt. I wouldn't buy an electric car if charging wasn't available in my area[1], just like I currently don't buy fiber because it's not available in my area. Over time, more areas will have fi
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by avhon1 6y ago
The development of flow batteries with lightweight, inexpensive electrodes and efficient, dense electrolytes would definitely change the situation a lot. Fuel would be pumpable again, and you could transfer large amounts energy without it b
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by avhon1 6y ago
It depends. Electric motors also have losses in their controllers, which removes another 5% or 10%. If you want mechanical power output and have 1kg of pre-charged batteries and 1kg of liquid fuel, the efficiency of electric motors might cl
343.
by avhon1 6y ago
It's not quite that bad. Solar panels that point directly at the sun during the summer solstice will still receive 91% the density of light during the winter solstice. ( cos(24deg) ~= 0.91 ) Where I live (about 40deg north), the wint
344.
by avhon1 6y ago
You can turn that around just as easily. If I run off to start a farm, and I buy an existing OTS used tractor, it will have a tank that I can pour almost any flammable liquid into to make it run. If I want to plug the tractor in... well, th
345.
by avhon1 6y ago
One of my personal fantasies is that the United States imposes a maximum road speed limit of 45 miles per hour (72 kilometers / hour). As a result, cars get lighter, more efficient, and safer, and trains become more popular and practic
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by avhon1 6y ago
Or saved by combustion-related techs, such as biofuel, biogass, wood gas, or just plain-old "burn organic matter".
347.
by avhon1 6y ago
The Backus engine shares the pre-compressor piston with this design, but this engine also has the pre-pre-compressor piston (with different geometry) and also the low-pressure power piston. It seems to still be novel, despite sharing charac
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by avhon1 6y ago
All of the skeptical comments I've read here are talking about how ICE are already obsolete, since electric cars are cleaner, quieter, and simpler. I'm picturing this engine being used in other applications (even though the websit
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by avhon1 6y ago
ICEs have a lot of life left in them yet. Hydrocarbon fuels are energy-dense and easily transported, stored, and transferred. It will be a long time before every use case can be practically and economically covered by electric motors.
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by avhon1 6y ago
> Would a 14% increase in thermal efficiency translate into a meaningful reduction in carbon emitted per mile driven? Yes (as long as the engineers don't seriously mess up). Nearly all of the energy released by burning gasoline is
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by avhon1 6y ago
Debugging wasn't too bad. The constraints I remember running into all the time are: * The editor is on a 16-column 8-row display, but the leftmost column always starts with the a ":" and the top row always has the name of the
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by avhon1 6y ago
My calculator was never checked before standardized tests, but some math teachers checked before giving class tests.
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by avhon1 6y ago
Something like that. You'd have to plot all of the text in all the right places, and also script the menu, delay, and keyboard response.
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by avhon1 6y ago
Everything you have said is generally true. My point is that there are scooters driven where I live, that most of them are driven by low-income people who are in the presumably-uncomfortable position of a scooter being their best option, an
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by avhon1 6y ago
There are lots of good, simple window managers (not to mention other utilities) for xorg. Window managers in wayland have a lot more work to do, and are typically more complicated. There are lots of utilities that aren't available in w
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by avhon1 6y ago
Because it reflects how the writers solve problems. They needed a website. Did they spin up a docker container of wordpress, install a theme and some plugins until it looked the way they wanted, and write content in an in-browser WYSIWYG ed
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by avhon1 6y ago
Cars do have more utility than motorcycles, but where I live (college town in American midwest) there are many poor people who drive small, cheap motorcycles. Speculation on why: <50cc scooters are subject to different -- usually lower -
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by avhon1 6y ago
Power usage. The classic TI-83+ can last for a whole school year on four AAA batteris.
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by avhon1 6y ago
You can actually spoof the "RESET RAM" menu in TI-Basic, but only dedicated students would do it.
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by avhon1 6y ago
Eh, not really. The calculator won't stop you from creating syntactically-incorrect programs. You can enter any nonsense you like. Errors are detected at runtime. You get one of 8 (I think?) error codes, and can Goto the line that the

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