skibidi

joined 4 months ago
[–] skibidi 8 points 3 days ago (1 children)

The momentum is the same, the impulse (and therefore forces) are very different. The bullet is propelled down the barrel gradually - the force is spread through the entire time it takes the bullet to travel the length of the barrel, the reaction forces are applied to the stock gradually, and spread over the area of contact between the shooter and the gun.

A bullet stopped by a vest/plate has a much larger impulse. The bullet needs to be stopped essentially immediately, rather than gradually slowed down over a length equivalent to a rifle barrel, otherwise it kills you. The force is also more concentrated, occuring over the cross-sectional area of the bullet, rather than over the entire contact surface with the rifle.

[–] skibidi 1 points 4 days ago

The issue isn't forwards, it is down.

You have a tungsten rod held in a clamp on a satellite in a nominally stable orbit. Releasing the clamp just means the tungsten rod is now in essentially the same nominally stable orbit as the satellite.

To deorbit it, you need to meaningfully change its velocity. As tungsten is very dense, that takes a lot of fuel. The more fuel that is used, the sooner the rod will hit the ground and the higher the angle.

Simply dropping it means you have to wait months or years for the orbit to naturally decay, a lot of energy will be lost to atmospheric friction, and there is little control over the impact point. Not exactly what you want in your WMD.

[–] skibidi 4 points 5 days ago (2 children)

Dropping anything in orbit just means it is still in orbit.

You'd need a lot of fuel to deorbit that cube on a steep trajectory.

[–] skibidi 13 points 1 week ago (3 children)

2000 Bezos or about 4x the GDP of the planet.

People just need to invest and stop blaming others for being broke SMH.

Invest one penny at 3% per year, who can't afford one penny? You'll have $68 billion in just one thousand years. Poverty is a choice.

[–] skibidi 5 points 2 weeks ago

Instead of looking at the number of closed plants, one should look at the sum of emissions

That was in the link I posted. Emissions are Currently at record highs.

Slowing growth isn't enough; we need significant, sustained, reductions in the very near future, and negative emissions and sequestering carbon in the medium term.

None of that is happening at a scale that would inspire optimism.

[–] skibidi 70 points 2 weeks ago* (last edited 2 weeks ago) (10 children)

Building out more and more renewables doesn't mean anything if emissions aren't falling - and they aren't. Since 2021, nearly 4 full years, the world has closed less than 1% of active coal power plants.

The buildout of renewables has arrived hand-in-hand with an increase in total energy usage. The energy mix has improved greatly in favor of renewables, tons of CO2 per KWh is way down, unfortunately we just use more KWh so total emissions are still rising.

Everything in the meme is a leading indicator for positive change, which is wonderful, but the actual change needs to materialize on a rather short timetable. Stories about happy first derivatives don't count for much.

[–] skibidi 6 points 2 weeks ago

It depends on the type of fusion.

The easiest fusion reaction is deuterium/tritium - two isotopes of hydrogen. The vast majority of the energy of that reaction is released as neutrons, which are very difficult to contain and will irradiate the reactor's containment vessel. The walls of the reactor will degrade, and will eventually need to be replaced and the originals treated as radioactive waste.

Lithium/deuterium fusion releases most of its energy in the form of alpha particles - making it much more practical to harness the energy for electrical generation - and releases something like 80% fewer high energy neutrons -- much less radioactive waste. As a trade-off, the conditions required to sustain the reaction are even more extreme and difficult to maintain.

There are many many possible fusion reactions and multiple containment methods - some produce significant radioactive waste and some do not. In terms of energy output, the energy released per reaction event is much higher than in fission, but it is much harder to concentrate reaction events, so overall energy output is much lower until some significant advancement is made on the engineering challenges that have plagued fusion for 70+ years.

[–] skibidi 19 points 3 weeks ago (1 children)

But if you could see them, they could see you ...

[–] skibidi 4 points 1 month ago

The issue is how the constitution lays out the choosing of a president. Pence had to certify the results, if he had refused to do so for long enough, then that session of Congress may have ended without choosing a president.

At that point, the Constitution prescribes there is a contingent election in the House, where every state delegation to Congress gets 1 vote. There are more red states than blue states -> Trump wins.

[–] skibidi 6 points 1 month ago

Runoff from a facility like this would be, in theory, easier to manage since it would be a concetrated source. A pipe of nutrient-rich water rather than a dozen contaminated streams and ponds. That also makes it feasible to recycle a lot of those nutrients, something that isn't practical in a field.

[–] skibidi 8 points 1 month ago (8 children)

That is a screenshot from Victoria 2

[–] skibidi 3 points 1 month ago (2 children)

Well, sort of. HDCP exists, and does make it harder to capture an AV stream.

For interactive content, the current push online components hosted on external servers adds a lot of complexity. While a lot of that stuff can be patched around by a very dedicated community, not every piece of content gets enough community appeal to attract the wizards to do such a thing.

And while anyone can digivolve into a wizard given enough commitment and effort, the onramp is not easy these days. Wayyy back when cracking a game meant opening the file and finding the line for 'if cd_key == 'whru686', it was much easier to get casually involved. Nowadays, DRM has gotten so much more sophisticated that a tech background is essentially required to start.

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