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Joined 1 year ago
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Cake day: June 9th, 2023

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  • Sonori@beehaw.orgtoScience Memes@mander.xyzJet Fuel
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    7 days ago

    Note, since the 80s the vast, vast majority of piston driven aircraft engines have been able to operate on unleaded fuel. We know this because for decades GA pilots have been filling out the paperwork for an experimental fuel variance and then running these engines unmodified on the cheaper unleaded they got from the gas station down the street without any apparent issue or rise in engine maintenance/failures among pilots that do this. The main hurdles being the necessary and not insignificant paperwork as well as concern over insurance rates.

    From my understanding there was a problem with one series of engine in the seventies that was suspected to be due to unleaded fuel among the more modern product line of a major manufacturer, and while the engine was modified to fix it neither Lycoming nor Continental, the two primary piston engine manufacturers who make up the vast majority of the market, saw significant pressure to drop the official recommendation for unleaded until relatively recently.

    Since the US finally started to get serious about phasing out leaded avgas in the 2010s, and the aditude of its been fine so far so why risk any change has run up against said pressure, both have to my knowledge dropped the requirement retroactively with no modification necessary for the majority of their historical and current product line.

    You might need to re-engine or more likely just get an exemption for flying history aircraft, but the benefit to the hundreds of thousands that live near GA airports in terms of reduced damage to children’s nervous systems far outweighs the nebulous cost of switching the default form of avgas.






  • I mean Saudi Arabia also does all those things, most of them far better than Israel ever could due to geography, and at a far lower cost. If Isreal snapped out of existence tomorrow, between Saudi Arabia, Iraq, and Greece European and North American power projection in the Middle East and North Africa remains almost entirely unchanged.

    Honestly the military benefits of supporting Isreal while real are definitely not as important as the domestic political benefits to the US, which is to say that the conservatives like Isreal because it provides a nice place to deport all the Jews to while also maintaining precedent for an enthnostate with race based citizenship, and the Democrats like it because they get a lot of gifts, friends, and in their minds potential voters, all for doing exactly what the conservatives want them to do.




  • Sonori@beehaw.orgto196@lemmy.blahaj.zonerule
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    2 months ago

    While true, the this time of the year part of the poster makes me think it’s for people putting up Christmas lights who ran the string backwards and don’t want to switch it around. This is also more dangerous because it ensures that a live male plug is lying around far from the suicide cable itself.




  • Sonori@beehaw.orgtoScience Memes@mander.xyzDark Matter
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    2 months ago

    To expand on this, we also have mapped it out and know that the amount of dark matter varies wildly between galaxies, with some having basically none while others have far more dark matter than observable matter in them. There’s also a lot of stuff with the early universe that only works if you have something with gravity that doesn’t otherwise interact significantly with matter.

    As Angela Collier puts it, dark matter is not a theory, it is a set of observations.



  • If it makes you feel any better, modern climate and economic studies have shown that even a full scale nuclear war involving every nuclear power at the height of the Cold War and when nuclear stockpiles were far larger than today we still wouldn’t have come very close to actually killing off all the humans on earth, with the vast majority of the casualties being owed to famine in regions that were/are heavily dependent on western fertilizer. Indeed entire nations in the southern hemisphere tend to get through such senecios without much of an direct effect from world war three.

    Mostly this change from earlier predictions came from being able rule out the theory of a nuclear winter as climate modeling became more accurate and we could be sure that the secondary fires from such a war could not carry ash into the upper atmosphere in significant quantities, which was practically shown when a climate change fueled wildfire in Australia got so large that it should have been able to carry the ash into the upper atmosphere under nuclear winter theory but none was observed, validating modern climate models.

    Also, dispite what some less scrupulous journalists trying to drum up clicks have posted on the Ukraine War, the Russian government itself hasn’t really made any major signaling moves with regards to bringing nukes into the conflict, and indeed has maintained and repeatedly reiterated Putin’s 2010s no first use policy when asked.

    Don’t get me wrong, this is not the result of some greater Russian morals or whatever, but just a consequence of the inherent risk that such posturing could lead to nuclear escalation and breaking the nuclear taboo or even just other nations actually believing they plan to, and such scenarios end very badly for Russia in general and Putin in particular.



  • I mean, the government has mandated that all cars built since the 90s have to have a lot of computers and sensors for engine monitoring and emissions logging so that ship has long since sailed. Automatic braking is also credited with eliminating something like 1 in 5 fatalities in car accidents, so as long as we have any motorized vehicles around at all I don’t really have a problem with the government requiring manufacturers to spend the extra 20 dollars or so per vehicle it costs them to add a few ultrasonic sensors and a microcontroller it takes to slow the vehicle to the point where a driving into a pedestrian might just be survivable.



  • I’m not the specific target of the question since my family always turns out to vote, but I’d imagine some of the big ones are people not knowing that they have a legal right in many states to take paid time off work to vote, general apathy, voter suppression making it very difficult to vote in some areas, and given the swing in turnout between presidential and non presidential elections, a lot of people who only pay attention to the presidential elections because they get nationwide coverage dispite your local and district votes bro by a whole lot more important when it comes to effects on your life and keeping extremists from implementing their policies.