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Cake day: July 5th, 2024

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  • 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.


  • 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@lemmy.worldto196@lemmy.blahaj.zoneREMOVED
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    20 days ago

    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.


  • 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.





  • 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.




  • I see the point you are trying to make, but inflation doesn’t quite when that way.

    Comparing the prices of the same commodities at two different points in time is literally how inflation is calculated, the increase from $1.50 to $4 is real.

    Now, what the inflation-adjusted dollars are telling you is that if eggs had only increased in price commensurate with general inflation, they would have gone from $1.50 to $2. The extra $2 increase is above what a consumer would expect given the general increase in the prices of everything else. If someone (magically) had a salary that increases with inflation, they would find eggs today to be a larger fraction of their spending if they kept the same level of consumption.

    Eggs are more expensive both in absolute and relative to other products. The reasons for this are complex, but due in no small part to people continuing to buy large quantities of eggs even when they were heinously expensive in the early days of the pandemic. The market absorbed that information and came to the conclusion that eggs were previously undervalued.


  • Just jumping in to say that red soils are not very fertile. They are nutrient-poor in the necessary macro-nutrients (nitrogen, potassium, and phosphorus) and have a very poor ability to retain water. They are very rocky - little organic matter content - which limits both water retention and cationic exchange capacity (affecting N+ and K+ bioavailability), and tend to be acidic.

    Cultivation is possible, but it requires large amounts of fertilizers and soil conditioning agents (liming to raise pH and add calcium, addition of organic matter). In effect, recreating an artificial soil that is closer in nutrient availability to the black soils present in the world’s most fertile regions (which today are also heavily fertilized).



  • No, not even close.

    I’ve used Unix systems for years at work, and have dual-booted windows with various flavors of Linux at home for just as long. When I just need something to work, particularly something new or after a stressful day at work, I just use windows.

    Why? Because it will just work. Maybe it won’t work precisely how I want it to, maybe it will send all my data to Bill’s push notifications, but it will run. In the rare case it doesn’t, a quick google will fix it.

    Compare that to Linux, where most things will work most of the time. And when they don’t, you get to hunt through GitHub issues off-the-clock like a peasant, wading through comments from people with entirely different configurations and ‘dunno it works for me’.

    Linux is for tinkerers, and for people who want a Unix shell and can’t afford a Mac, it has a long way to go to be more than that.


  • skibidi@lemmy.worldtoLemmy Shitpost@lemmy.worldThose poor plants
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    2 months ago

    The ideal answer is compost, regenerative agriculture, and (better treated) human-sources waste.

    Organic crop yields will almost certainly reduce a bit without animal waste fertilizer, but that is fine since crop consumption will fall by a greater amount due to not needing to feed a bunch of extra animals.



  • You haven’t really described what you are imagining.

    Proper “AI”. No more coding, you just tell the machine what to do and it will do it. I don’t think in the physical world but computers and every profession that is not physical will be much rarer. Either pivot to AI Management or be the arms that the AI “guides” through a task.

    Telling a computer specifically what to do and how to do it without making mistakes is coding. Programming is a level above that, in designing the architecture of how to approach the business problem.

    What the other commentator is saying, is that simple being able to tell some model ‘build an app that does XYZ’ requires AGI because that set of instructions is not complete - the machine requires outside knowledge and the ability to make judgement calls in order to complete it.

    If that isn’t what you meant, it is at least what you said. The breakdown in communication here, between humans, should also serve as another reminder how difficult it is to convey an idea to another entity and how that problem will remain difficult for a very long time.



  • There is always a tension between security, privacy, and convenience. With how the Internet works, there isn’t really a way - with current technology - of reliably catching content like that without violating everyone’s privacy.

    Of course, there is also a lack of trust here (and there should be given the leaks about mass surveillance) that the ‘stop child porn powers’ would only be used for that and not simply used for whatever the powers that be wish to do with them.