legofreak

joined 2 years ago
[–] [email protected] 3 points 1 year ago (1 children)

The transition from EVs to public transit, biking, etc has to come eventually, too. We can however already do that and places have successfully done so. Look at the Netherlands for example. EVs are in the way of transitioning to better public infrastructure and will only delay it.

[–] [email protected] 9 points 1 year ago

1st gets 25 points, second gets 18 per race. He consistently won nearly every race this season whereas second place was less consistent.

[–] [email protected] 3 points 2 years ago (1 children)

As he mentions in the video, the field is lagging behind other (renewable) energy sources by a few decades. Many of our energy production methods are "make thing spin fast" and then turn that energy into electricity. Coal power plants burn coal, create steam, the steam drives a steam turbine and the turbine a generator. A nuclear plant works the same way, just by extracting heat from fission instead of burning the fuel. Wind turbines, too. The technologies for this, like metal forging and casting, handling of steam, steam engines and turbines have been around for a long time and we have become experts in them. Solar panels are an exception to this as they used a different mechanism to generate electricity. Nevertheless, all of these technologies can be safely developed and deployed on land. Handling harsh marine environments up to a point where you can reliably drive these generators for an extended period of time just doesn't exist yet. Historically speaking, this has not been necessary. So not only have to figure out how to best design wave energy extractors, we also need to get better at adapting them to the environment.

[–] [email protected] 3 points 2 years ago

I'm a physicist and I love KSP. You can learn a lot of things about orbital mechanics from textbooks, but KSP offers a great way to see how everything works. One of my TAs actually used it for teaching, to illustrate homework problems.

[–] [email protected] 8 points 2 years ago (5 children)

That's not how orbits work. You can't just point at the sun, accelerate slowly for 10 seconds and then you will arrive in a few hundred years. If you did that, you would still orbit the sun, just in a slightly different orbit than before. To actually reach it or get near enough to it that the junk burns off, you have to expend a lot of energy.

view more: ‹ prev next ›