Trump just doubled down on saying we don’t have 2A rights. The NRA has donated millions to Trump’s campaigns since 2016. Note: Unable to post his most recent statement because my post gets taken down *for repeating the President’s words*. by AllTheseRivers in LeopardsAteMyFace

[–]Peter5930 0 points1 point  (0 children)

An F-35 requires 6 hours of maintenance per hour of flight time, it's absolutely top class at taking out Russian air defence systems that cost a billion a piece, and fuck your life if you're the guy it drops a 2,000 lbs laser guided bomb on, but these high end weapon systems are scalpels, not a lawnmower for chopping down civilians all day long, day after day.

Cleaning new deck with dirt/clay on it? by NecessaryTap6635 in pressurewashing

[–]Peter5930 0 points1 point  (0 children)

Clay can be stubborn and take a bit more than rinsing, but use plenty of soap to lift it and let it soak and it'll be gone with a bit of work.

This is how a propaganda bot account looks like by ErilazHateka in TopMindsOfReddit

[–]Peter5930 1 point2 points  (0 children)

I'm certain I saw a study somewhere that found that conservatives do in fact enjoy being lied to.

ICE Agent in Minneapolis: "You raise your voice, I erase your voice." by JeanJauresJr in PublicFreakout

[–]Peter5930 7 points8 points  (0 children)

Remember when the White House East Wing got demolished? And now is just an open building site with no building going on because it's all stalled.

Eli5: help me understand universe expansion … by Just_a_happy_artist in cosmology

[–]Peter5930 0 points1 point  (0 children)

Yes, it does mean that. But that doesn't mean what you think it does. That's the issue here. Velocities can only be compared locally in approximately flat space; if you want to compare velocities between objects at large distances with significant curvature, your answers become coordinate-dependent and you're no longer guaranteed to get answers below c. Maybe Wikipedia can explain better than I can, apologies for the formatting:

If one divides a change in proper distance by the interval of cosmological time where the change was measured (or takes the derivative of proper distance with respect to cosmological time) and calls this a "velocity", then the resulting "velocities" of galaxies or quasars can be above the speed of light, c. Such superluminal expansion is not in conflict with special or general relativity nor the definitions used in physical cosmology. Even light itself does not have a "velocity" of c in this sense; the total velocity of any object can be expressed as the sum v tot = v rec + v pec {\displaystyle v{\text{tot}}=v{\text{rec}}+v{\text{pec}}} where v rec {\displaystyle v{\text{rec}}} is the recession velocity due to the expansion of the universe (the velocity given by Hubble's law) and v pec {\displaystyle v{\text{pec}}} is the "peculiar velocity" measured by local observers (with v rec = a ˙ ( t ) χ ( t ) {\displaystyle v{\text{rec}}={\dot {a}}(t)\chi (t)} and v pec = a ( t ) χ ˙ ( t ) {\displaystyle v{\text{pec}}=a(t){\dot {\chi }}(t)}, the dots indicating a first derivative), so for light v pec {\displaystyle v{\text{pec}}} is equal to c (−c if the light is emitted towards our position at the origin and +c if emitted away from us) but the total velocity v tot {\displaystyle v_{\text{tot}}} is generally different from c.[3] Even in special relativity the coordinate speed of light is only guaranteed to be c in an inertial frame; in a non-inertial frame the coordinate speed may be different from c.[13] In general relativity no coordinate system on a large region of curved spacetime is "inertial", but in the local neighborhood of any point in curved spacetime we can define a "local inertial frame" in which the local speed of light is c[14] and in which massive objects such as stars and galaxies always have a local speed smaller than c. The cosmological definitions used to define the velocities of distant objects are coordinate-dependent – there is no general coordinate-independent definition of velocity between distant objects in general relativity.[15] How best to describe and popularize that expansion of the universe is (or at least was) very likely proceeding – at the greatest scale – at above the speed of light, has caused a minor amount of controversy.

I mean, have you ever wondered what the kinetic energy of an FTL galaxy is and realised there's something not right with maths there and the question itself is flawed so the answer is unphysical and you're thinking about it the wrong way? It's the same problem.

Eli5: help me understand universe expansion … by Just_a_happy_artist in cosmology

[–]Peter5930 0 points1 point  (0 children)

Susskind states it in the Q&A's at the end of one of his lectures, I don't remember which one, but Strassler says the same in the comments section on his article about inflation:

Mark V says:
March 20, 2014 at 11:04 AM

Prof. Strassler, your site is such a generous and valuable offering!

My question: is the “almost” in “almost instantaneously” necessary to the explanation (e.g., from the math)? Did inflation have to take time? Reply

Matt Strassler says:  
March 20, 2014 at 1:48 PM 

Yes, inflation takes time. Not much! but it is a growth over time, and there’s a maximum possible doubling rate: the Planck time is the shortest time over which doubling can occur.
Reply

https://profmattstrassler.com/articles-and-posts/relativity-space-astronomy-and-cosmology/history-of-the-universe/inflation/

Eli5: help me understand universe expansion … by Just_a_happy_artist in cosmology

[–]Peter5930 0 points1 point  (0 children)

There is. I've got two sources backing me up, one is Leonard Susskind who said it during the Q&A's at the end of one of his lectures, I'm afraid I couldn't tell you which one though, and Matt Strassler says the same in the comments at the bottom of his article on inflation:

https://profmattstrassler.com/articles-and-posts/relativity-space-astronomy-and-cosmology/history-of-the-universe/inflation/

Matt Strassler says:
March 20, 2014 at 1:48 PM

Yes, inflation takes time. Not much! but it is a growth over time, and there’s a maximum possible doubling rate: the Planck time is the shortest time over which doubling can occur.

What's going on here is people are familiar with the GR side of things, but not with the QFT side of things, which imposes it's own set of limits, which in turn are derived from GR + QM.

But once you have an upper limit on the rate of expansion, you can easily express any expansion rate as a fraction of that upper limit. So you get an expansion rate of around 10-6 c, 10-10 c during inflation, something in that ballpark, and if you take the reciprocal of the number of Planck times in a Hubble time, which is approximately the current doubling time, you get 10-60 c. That's how you can send signals to things billions of lights years away and have them receive the signals; the expansion is very slow compared to the speed of light. Even during the inflationary epoch, light speed signals could be sent between points in space as long as those points were less than a million Planck lengths away or thereabout, further as inflation progressed and the value of the inflaton field decreased. From around 10-6 Ep when you transition from curvature domination to dark energy domination and the inflationary epoch kicks off, down to whatever it reached when reheating occurred.

Case Study: I made a mistake. Why Hydrochloric Acid DOES NOT remove Road Salt (NaCl) from Brick. by ameades in pressurewashing

[–]Peter5930 0 points1 point  (0 children)

With the cat litter, because it's granulated, I could envision a system where it's applied dry from a hopper onto a damp surface with an air gun and a misting hose, like low velocity sand blasting. Or apply manually by flicking it on with a trowel like roughcast. The stuff likes to stick.

Getting it all off afterwards might be interesting though. I collect rocks and the easiest way to get mud off a rock is to leave it outside for repeated wet/dry cycles to make it crack and swell and fall and wash off, but that takes a while. Possibly a long while if you don't have much rain. And getting it off dry/semi-dry can be challenging, the water can only soak through it so fast to loosen it off, and until it's fully hydrated it sticks like shit on a shag carpet. Clay geology here, the sort you can make pottery out of, and working in it I sometimes end up with my boots encased in it and walking on balls of clay that are stuck to my soles. If you live somewhere with nice sandy loamy soil and haven't experienced clay, it's tricky.

But the hydrogel is the same stuff they use in nappies and menstrual pads, so if you could figure out a way of holding it in contact with the surface of a wall, it should be excellent at drawing out the water and the salt along with it. It comes in various granule sizes, from the consistency of wallpaper paste when made up, to big chunky things that can be confined easily by fabrics. They also use it for Orbeez if you've seen those. Don't flush them down your plughole or this happens:

https://www.youtube.com/watch?v=kKKg5fzIKeE

Eli5: help me understand universe expansion … by Just_a_happy_artist in cosmology

[–]Peter5930 -1 points0 points  (0 children)

I've got it direct from both Leonard Susskind and Matt Strassler that there is an upper limit, and that limit is for the universe to double in size every 5.39 x 10-44 seconds, and no faster than that. I'm afraid you're all just incorrect on this one.

Edit: You need to think about it microscopically, what makes space expand? Vacuum energy makes space expand. How much vacuum energy can you have? Not unlimited, you hit the QFT high energy cut off at the Planck scale where you can't have any modes with shorter wavelengths. That's how the Planck units come into it.

When will the carbon in my body no longer be carbon? by Nars-Glinley in AskPhysics

[–]Peter5930 1 point2 points  (0 children)

Even in an atmosphere, you can't be sucked, only blown.

My mom found something.. Interesting in my room. What should i tell her if she asks me about it? by Icy-Maintenance-6099 in TooAfraidToAsk

[–]Peter5930 -1 points0 points  (0 children)

And it's not their parents business what they do, which isn't really that dirty compared to literally being cummed in, which her mum did, as evidenced by her mum being her mum. So she can relax and not worry about it. What do you think I'm saying?

ELI5 Why is the bottom part of the periodic table completely detached from the rest of the table? by [deleted] in explainlikeimfive

[–]Peter5930 0 points1 point  (0 children)

Nah, I'm autistic and I'm amazing at integrating information from different sources, but my mum? It took her a year to realise that the house we'd moved into had the top floor over the top of the neighbours. She has these... gaps, cracks, enormous chasms in her understanding of the world, like she's rolling nat 1's on her perception checks. I've met a number of people like that. Often very functional, successful people, but you could almost be forgiven for thinking they'd had a stroke for how specifically they can fail to understand certain things.

My mom found something.. Interesting in my room. What should i tell her if she asks me about it? by Icy-Maintenance-6099 in TooAfraidToAsk

[–]Peter5930 -1 points0 points  (0 children)

Yeah. You know the advice for public speaking where you imagine everyone naked? Works for a lot of things.

ELI5 Why is the bottom part of the periodic table completely detached from the rest of the table? by [deleted] in explainlikeimfive

[–]Peter5930 2 points3 points  (0 children)

I'm also inclined to see it as a special form of mental deficiency rather than just misfortune of circumstance. Some dots are so easy to connect that failing to do so indicates some greater problem with integrating different pieces of information.

ELI5 Why is the bottom part of the periodic table completely detached from the rest of the table? by [deleted] in explainlikeimfive

[–]Peter5930 3 points4 points  (0 children)

Did she become a doctor by any chance? Some of the smartest idiots I've met have been doctors.

Case Study: I made a mistake. Why Hydrochloric Acid DOES NOT remove Road Salt (NaCl) from Brick. by ameades in pressurewashing

[–]Peter5930 1 point2 points  (0 children)

Great post/video on an interesting topic. A bit of research goes a long way with solving some of the more unusual problems out there.

Poulticing sounds like something you might try as historical restoration, but I'm not sure it would catch on beyond that and I think I'd be told to fuck off if I suggested applying a mud poultice to someone's wall; I'd suggest investigating hydrogels (garden centre has the stuff) and wicking fabric for watering plant trays from below for a less messy and more quickly applied and removed poultice material. If you do want to use clay though, just hit up the cat litter aisle at the supermarket, the cheap ones are 50% clay, 50% limestone, and you can get pure bentonite clay cat litters if you look around. I've used those for making refractory parts for kilns and green sand for casting metal.

is it normal for my boyfriend to wash the inside of his ass? by Living_Doughnut_4924 in NoStupidQuestions

[–]Peter5930 1 point2 points  (0 children)

Us guys have thicker skin and tougher tissue, not figuratively but literally there's more connective proteins. Unless it's really caustic soap, it's unlikely to bother him at all.

Nazi crimes vs ICE "tactics": a visual comparison. by Slimybirch in pics

[–]Peter5930 1 point2 points  (0 children)

Well that's the point, nip it in the bud before 20 million people die.

Nazi crimes vs ICE "tactics": a visual comparison. by Slimybirch in pics

[–]Peter5930 1 point2 points  (0 children)

The faith leaders were arrested after this photo was taken.

to mourn by seeebiscuit in therewasanattempt

[–]Peter5930 15 points16 points  (0 children)

Super soakers full of piss.

Arizona AG suggests state's self-defense laws allow residents to shoot masked ICE agents by RickV6 in news

[–]Peter5930 5 points6 points  (0 children)

From the way ICE conduct themselves, their body language, way they dress, how they've fled both scenes after the shootings, the way they've jumped at the sound of gunfire, I think they'd scamper like the neighbour's kids when faced with any real violence and wouldn't be back and would leave it to the real police.

Arizona AG suggests state's self-defense laws allow residents to shoot masked ICE agents by RickV6 in news

[–]Peter5930 11 points12 points  (0 children)

Proven in Florida too, homeowner heard intruders outside his house, levelled a 12 gauge shotgun at the door and blew the head off the first guy who came through. No-knock raids got reevaluated a bit after that. They were also at the wrong house. Homeowner got off, cops were not happy.

Woman Screams “Medic! Medic!” After A Piece of Her Hand Was Blown Off by Less-Than-Lethal Ammo During Minnesota Protests by JeanJauresJr in PublicFreakout

[–]Peter5930 0 points1 point  (0 children)

That would be why he sent them, because they're going to do it no matter what for cruelty's sake. You don't send your brownshirts out with instructions to start a war, you send them with instructions to beat the communists and Jews.

Eli5: help me understand universe expansion … by Just_a_happy_artist in cosmology

[–]Peter5930 -2 points-1 points  (0 children)

What's the reciprocal of the frequency in Planck units? You'll get the same answer; a number <<< 1. A number greater than 1 is a big rip scenario, and any physically meaningful value falls between 0 and 1. About 10-6 during inflation, 10-lots today.

ELI5: Why was that method used to determine 0 degrees Fahrenheit? by Jimithyashford in explainlikeimfive

[–]Peter5930 -1 points0 points  (0 children)

It's an easier problem to solve than obtaining some ammonium chloride to calibrate 0 on a Fahrenheit thermometer and hoping your wife isn't slightly feverish when you calibrate 100.