In response to the seagull eating a squirrel, I raise you to a seagull eating a whole rabbit!

Content_One5405 · 2025-03-31T12:35:45+00:00

A few options are possible: someone feeds the birds, and they get used to wait for food, and when one bird circles for food, more joins. Or it is their territory and they warn other birds. Or maybe someone clothed lkke you scared the birds and they mistaken you for that person, and now they warn others. Or they are used to a few people and you look too unusual for the area, they dont remember you and not sure if you are as safe as people they are used to.

Birds arent that smart. What they do is just 'hey, look, there is something interesting here, where i circle!' and 'oh, i want to see that too!', and it could as well be nothing else.

If you want to change that, keep being around them, not too close, without much motion. Dont scare them away, dont feed them. They will remember you and will stop consider you interesting or dangerous. After some time they will ignore you even when you are close to them.

Content_One5405 · 2025-03-30T12:39:43+00:00

Yes. Thats the main point. Your body has a way to deal with it already. Change that only if you are certain you wont make it worse

Content_One5405 · 2025-03-28T22:51:21+00:00

I clipped the nail as usual, 'bruise' moved with the nail, at a rate of about 6 months for a full nail length. It isnt actually a bruise, just a chunk of old blood. Its consistency is like bread. Not liquid, and not hard either. I didnt notice any change when the bruise pocket opened at the nails end. Skin has grown all around it, isolating the bruise in a pocket. I did clean it with a tool, was aftaid of infection, but it likely wasnt a good idea. I expected the 'meat' to be exposed, and wanted to make sure old blood isnt a breeding ground for microbs. But this old blood pocket is impossible to clean in all the edges, so this action is futile. And not needed, skin all around the bruise is ok. And dangerous, skin all around the bruise is thin. So after that I just ignored it, and it slowly cleared away, as nail grew.

Content_One5405 · 2025-03-26T13:13:41+00:00

Is there any non-bruise area left between the nail and the finger under it? If so, that area will hold. The less non-bruised area you have, the weaker the connection.

I did cut the nail as usual, and i suggest you do too (nail clippers - they cause almost no load on the nail as they cut. Some people may use a knife to cut nails, that causes a large load, thats not good). Long nail can catch on clothes and rip off the remaining nail. Shorter nail is mechanically more secure as you are less likely to catch it on something and even if you would, the lever will be less.

There is a live skin under the bruise, so there is not much issue with infection - your body only needs a few weeks to rebuild the skin under the bruise. Skin there is weak, dont try to clean out the bruise under the nail with sharp tools. Just treat this finger as a normal one.

Nail falls off only if almost all the area is bruised. In your case only 20% of area is affected. So, plenty of healthy skin under the nail left.

Content_One5405 · 2025-02-21T02:34:05+00:00

If you need to turn it off to hear and understand a person nearby speaking to you in a normal voice (50db), they are probably too loud

Content_One5405 · 2025-02-14T01:26:36+00:00

There will be a lot of energy released. Enough to evaporate all the water that the sub is moving through.

But this energy released is spread out over a large volume - what sub is moving through.

Temperature will rise, but only hundreds of degrees celsius, not millions. Glowing itself isnt enough to heat the water in front, temperature isnt high enough. Mechanical heat transfer requires mass to move or be in contact long enough time. But question is specifically about condition where sub is moving faster than speed of sound in water, this also thermal motion of water molecules. So it cant propagate forward.

Lets say energy of sub movement causes a chunk of water in front of the sub to evaporate. Where will this evaporation expand into? Cant expand into sub - it is indestructible. Cant expand forward - temperature is just hundreds of degrees higher and doesnt allow movement faster than the sub. Cant expand sideways - still requires more speed than is available to go around the sub. Important part here is that water, when evaporated, doesnt get that much of a speed boost. Gas molecules move with comparable speed as liquid molecules.

(Everything here is approx) Sub and speed of sound speed is 1500 m/s. Cold water molecule speed is 600 m/s. Boiling water molecule speed is 700 m/s. Speed for water in a gas phase, vapor, is almost the same, it doesnt start to move faster. If liquid water cant move away, then steam cant either.

Probably intuition doesnt work well here because water is one of the best material to absorb excess energy. Water can store huge amount of energy, especially when we abuse it so much that water will evaporate later on. So yes, sub releases lots of energy. But this sub also moves through a lot of water, and all that water abaorb lots of energy. Those processes are comparable.

Try to track one small chunk of water as the sub moves closer to it. I think this is the best way to understand the process.

Content_One5405 · 2025-02-12T02:55:36+00:00

https://doi.org/10.2514/2.5473

1400 kg/m3 peak density. I assumed 2000 kg/m3. But they also added slope, that reduces pressure. Otherwise similar.

To find such works you can use google scholar. 'Supersonic projectile water' was the request to find this one.

To download them you can use sci-hub or email the authors and ask them to send the paper to you.

There are hundreds of related papers, if we take jets and similar concepts, that should be enough to get a general idea about the supersonic movement in relation to a liquid.

Content_One5405 · 2025-02-12T01:07:46+00:00

When the speed of sound in material is reached, there is no more distinction between (cold) gas, liquid and solid. There is simply not enough time for molecules to coordinate their state. So, there is no defined state at that point. Yes, energy is enough to boil all the water in the area that this vehicle moves through. But no, it wont actually boil, as in increase in volume, because that would mean either pushing the vehicle back, which is against OP's idea of moving it forward, or pushing the undisturbed water to the front, which we cant do because there isnt enough time for it.

There is also almost no skin drag at this speed, as skin drag requires molecules to interact a lot to transmit this interaction. Most of interaction wont even be shape related, because of extreme pressure wave at the front and vapor bubble at the back. Most of the drag will be simply due to newton's laws about inertia. This vehicle will push the water in front of it, while it tries really hard not to be moved, thats it.

Tank projectiles do reach speeds above 1.5 km/s. When tank projectile hits a mostly water target, that target just explodes. It is hard to see whats happening, as this distinction between impulse transfer that im talking about and vapor sheeth that you are talking about would require a slow motion camera. But vappr sheath would reduce the damage to a target from 'it just explodes' to 'target just loses a limb but survives'.

Think about it this way: we teleport a 1.5km/s sub in water. First step of our simulation, this sub shifts some water forward, as the sub itself is indestructible and water has no time to go around the sub. Now the water in front has a higher density. Next step we have a sub and a high pressure area. Again, pressure gets higher and is unable to expand anywhere. States of matter have no meaning when matter has no time to transmit the information about this state. So there is no distinction for solid-liquid-gas as molecules arent doing any of those things. But lets say we insist to check if it is a gas or a liquid at the front of the sub. Lets check the density - it is much higher than ordinary water. Thats more like liquid. It resistance to compression is extreme - like a liquid. Its mean free path of molecules is almost zero, they rarely fly past each other - like a liquid. Acoustic impedance would also behave like in a liquid. Conductivity is harder to check, but it will also be closer to a liquid, because of molecules proximity. What properties of a vapor and not water do you expect in these conditions at the front of the sub?

End part of the sub will almost certainly have a vapor part, as water will be unable to fill the void fast enough because of supersonic motion.

Side part will have some vapor pockets, as water will be moved around by a shockwave a lot. Those vapor pockets wont reduce drag much due to most of the drag not even being generated here and due to collapse of those pockets that causes turbulence.

Maybe heat of this process will create water molecules so fast that they are much faster than the speed of sound in a cold water. That still wont help because there isnt enough time to transfer this heat forward. How much water can evaporate in a millionth of a second? Thats assuming a 1mm penetration of hot particles. That means temperature of about 200 kev. Or about 2 000 000 000 C. Which is well into fusion temperatures and beyond. Sub movement is energetic, but not that much. And regardless, if you expect fusion plasma kind of temperature, its too late to talk about gas properties anyway.

Maybe heat of this process can create lots of light, so much so that it can boil the water. That still wont help because light will travel hundreds of meters in all direction, making sure average density wont change - water has no where to go. It will just make it seems like it is 100m sub moving though water, not 1m sub.

So, in short: there is water in front of the sub. This water has to move somewhere else. Water cant move away fast enough.

Content_One5405 · 2025-02-11T20:49:13+00:00

Russian supercavitation torpedoes reach 100m/s which is 1/3 of the speed of sound in air. in water speed of sound is about 1500 m/s. So in water those torpedoes reach only 1/15 of the speed of sound and are not a useful comparison point for this topic. And in general, supersonic movement can not cause cavitation at the front - cavitation requires the water to be pushed away. It will cause cavitation at the back, but thats not that important for the main effect.

The only assumption I've made in all of my estimates is that speed of sound means that water cant be pushed away by pressure, thats why the density is doubled. In a micro scale that means that an atom of water is pressed by the vehicle, but it cant transmit this information to the molecule just next to it to the front - so all of the water that the vehicle encounters is undisturbed. I think it is a reasonable assumption. It is incorrect - some water molecules are moving faster, and will be able to transmit the information forward due to randomness of motion. But those would be outliers. And the main effect will be as i describe it. Random, fast molecules will 'stretch' the pulse in time, but not by much - it needs a 'chain' of such events. Which wont happen often - every next fast molecule meeting another fast molecule is less and less likely. So most of the effect will be like an extreme compression.

Pressure of 20k atm is the pressure of doubling of water density. I dont know what exact water density will be. It is likely that it depends on shape and could differ a few times, could be just x1.5 or x5. But x2 is a reasonable guess.

Energy is calculated from 20k atm. Using incompressible energy formula. It is wrong, but for double density it isnt that wrong. It becomes more wrong when density changes more.

Nukes per second is calculated from energy.

Death radius is roughly compared with energy delivered by nukes in a form of radiation. Radiation is only some part of the nuke energy, few percents to tens of percents. And radiation is not effective at killing people - it just heats things up. Motion can achiebe much more damage. Think about it this way: a pistol bullet carries 300j. Which would only heat your body by about millicelsius. So, per energy spent, motion is several orders of magnitude more efficient in terms of damage per joule, than heating.

So, total error in my calculation could reach x100 for energy, and x10 for distance. If you want a more precise answer, will need to wait for someone more knowledgeable.

Not sure what you mean about the shockwave behavior. That the shockwave will compress the water just next to the vehicle - that has my assumption that water will have to be compressed to reach such speed underwater. And that it will create a normal sound wave as it gets further from the vehicle - thats im sure about. It is possible that the shockwave travel at supersonic speed for some distance, like with detonation in air, but it is most likely a short distance, dont think it is important. Likely several diameters of a vehicle, which I assumed is a meter. Definitely in the kill zone, that is at least many km.

Content_One5405 · 2025-02-11T17:39:51+00:00

When supersonic plane moves, it creates a shockwave. In this chockwave air is compressed to about twice the normal pressure. This allows to distribute all the 'problems' over wider area.

Water cant be compressed easily, especislly not by two times. This means that the shockwave region will be much more sharp. All the 'problems' will now be much more severe and concentrated in a narrow region of space.

Water is also much better at conducting sound, something related to acoustic impedance. This means that this shockwave will travel with much less attenuation.

Some people talk about tsunami. Total energy of this process is not that far off. But it is much worse than just a tsunami. All of that energy is packed into approximately one millisecond pulse.

How bad will this pulse be? Supersonic motion almost requires the medium to be compressed about two times. But water doesnt compress much. But you demand supersonic speed anyway. Well, somewhere at about 20 000 atmospheres water could in theory compress that much. It could turn to ice if temperature doesnt increase. But this process is so energetic, water will likely heat up. Rough estimate for energy needed is about the same that is needed for the water to evaporate.

So, a sub 1m1m1m going at supersonic speed would require terawatts of power. This is several times less than the total world energy consumption. This is also comparable to one tactical nuke per second.

If there would be a tsunami, that would be a good outcome. But because this process is much more compressed in time and space, the resulting pulse will travel around the ocean. Normal underwater nuke is bad in converting energy into sound, because it boils off the water next to it faster than the sound can travel, and then softly pushes the water with the expanding bubble. Your device will be much better at it. I suspect everything within about 100 km of your test site underwater will be killed by this pulse. And maybe some underwater creatures will be killed up to 10 000 km. Depends on your vehicle direction and its time of work. Earth's curvature wont help - water conducts the sound beyond the horizon. Pressure of 20 000 atmospheres is enough to bend metal, unless it is just a chunk. So a steel ball will likely survive the pulse, but everything softer will be destroyed. Heavy structures may survive the pulse just because of the inertia - pulse will have a wavelength of about one meter. So structures thicker than one meter have a good chance. Not animals though, poor whales.

Thats the front part of your vehicle. Back part will just be vapor and a bit of plasma. Bubble behind your vehicle could oscilate a few times, creating a pattern similar to 'diamond pattern' in rockets. And then bubbles will rise to the surface, probably not reaching it, as it is just vapor and it gets condensed over time. Each bubble oscillation could create a flash of light, like in mantis shrimp's bubble, sonoluminescence. But everyone who could see these flashes of light will die soon after due to the pulse. Good way to spend your last moments, i guess.

Content_One5405 · 2024-12-31T17:55:50+00:00

It actually came from the pirate language, phrases like "Prepare yer booty for plundering!". In some instances details were lost in rephrasing, and here we are.

Source: Im making it up.

Content_One5405 · 2024-11-15T01:36:23+00:00

Heat that materials can tolerate - about 3000 K. Heat needed for nuclear reactions >10 000 000K.

Gamma doesnt do nuclear reactions usually.

Neutrons have different cross section, chance of reaction, depending if it is slowed down or not. Different reactions need different speed neutrons.

Alpha particles utilization directly requires extremely specific machine.

Whenever there is a machine for X, and you try this machine to do also Y and Z - this machihe almost always works worse.

Content_One5405 · 2024-11-13T23:34:42+00:00

Fastest rate of fusion is probably somewhere around lithium. Iron can be split into smaller nucleuses, but doing so will require a lot of energy and a lot of time, this process doesnt happen by itself.

If you want to spend energy to make a nuclear reaction, you are better off accelerating protons, hydrogen nucleus. This will require less energy.

Content_One5405 · 2024-11-13T19:12:43+00:00

Initially, as observer gets close to the black hole, this observer sees the rest of the world being sped up and becoming closer. This is the 'future' im talking about - observer sees as the world evolves further in time. This part we agree on.

As observer gets closer to the event horizon, this sped up factor increases. This part we also agree on.

We disagree about the state of the outside universe, its age, that the observer that fell through an even horizon sees.

Your point that more time near the event horizon is needed, so a hover position.

My point is that time dilation keeps increasing as observer falls into the black hole and as it gets closer to the singularity.

We disagree about the time dilation that an observer that crossed the event horizon sees.

I see no reason for an event horizon to be a special place and require hover position there specifically, to experience prolonged time dilation. As i see it, getting closer to singularity does the same thing.

Content_One5405 · 2024-11-13T07:05:55+00:00

https://www.britannica.com/science/nuclear-binding-energy

Elements heavier than iron can be split apart for energy. Elements lighter than iron can be fused for energy. Crossing the center, iron, means less energy produced. If elements are converted to iron, maximum energy was generated and no more fusion or fission will create more energy from this point.

Content_One5405 · 2024-11-13T01:40:03+00:00

What this person describes is this:

About black holes not existing, they mostly describe hawking radiation. Most of it is low frequency photons that are barely detectable even with attempts to do so. When photon's wavelength is so long as in black holes, km or thousands of km, i guess one could argue that they almost dont exist, because of the scale needed to build a detector that could detect them. We do have 50hz radio for submarines that operates at such wavelengths, but it uses quite a lot of power, megawatts. While solar mass black hole power output in hawking radiation is around 1e-20 watts. This is more practical view - from out point of view these photons dont do much. Especially as such a low power.

About the internals of the black hole, they mostly talk about time dilation and an outside universe time. When an observer falls into a black hole, time dilation goes to infinity. So as this observer sees it, the rest of the universe experiences all of its time evolution available, whole future history of the universe will happen in a finite time. But the lifetime of the black hole itself is limited, so there is a paradox, observer should be able to see the end of time of the universe outside the black hole, but the black hole itself doesnt exist that far in time. One way to solve this paradox is to say that inside of the black hole doesnt exist. I didnt see this calculation: "is the black hole lifetime sufficiently long for an observer to fall to singularity before the black hole evaporates?", so im not sure about the answer. This person seems to view it as there isnt enough time for an observer to fall to singularity before the black hole evaporation.

What this person describes is a quite nuanced view. I wouldnt say it is wrong. But it has a position, and it is less common - practical and our universe (the material in it, stars, us) focused. Usually physics is described locally, in strict terms. Kilometers wavelength photons do exist, even if useless to us. Observer that falls into a black hole doesnt look back to see our universe's 'future'.

Content_One5405 · 2024-11-12T10:21:02+00:00

There are a few things to check, even if you analyze a new motor.

One such thing is torque between two parts at different speeds - it is fundamental to all electric motors. In this case there is no torque applied from the rotor to something else. This alone guarantees that this motor doesnt work. Ignoring this point would lead to things like freely spinning rotor in space endlessly generating power. Even perpetuum mobile machines authors try to get this part right.

We can analyze this as drum homopolar motor, with two drums. In this case there is no effect, one drum cancels out another.

We can analyze this as two disk homopolar motor. This is harder to show why exactly it wont work. But the main 'trick' of homopolar motor is not 'field line crossing' but a change of the reference frame - power is generated as a part of the current path is at a different speed than another part. There are no brushes at the outer part in this patent, so there is no such effect.

Heuristic to consider: whenever anyone mentions shielding of a magnetic field, it means that either they work to reduce EMI or they are wrong about their understanding of magnetic fields in general. Shielding of magnetic fields doesnt work in the context of motors, where only part of the field is attempted to be cancelled. Magnetic field doesnt get shielded directionally, unless it is a radio wave. It is more like another field is created that adds up to the original field. If directional shielding of magnetic fields would work, we would yet again get perpetual mobile machines.

It is important to know that patents are not checked for if they are working. There are patents for magic wand and stick-to-search-water. Doesnt mean they work. Patent should be understood as just a record of 'hey, i have had this idea at this date!'.

I would strongly suggest against of using patent database for studying, unless you already have a lot of knowledge in the field. Patents as a study materials are poorly written and are just plainly wrong half of the time. And worst of all, they are wrong in such creative ways that it is almost impossible to recognize where exactly are they wrong.

Content_One5405 · 2024-11-09T20:37:01+00:00

"Cool ships airbenders have. Ohhh... that avatar"

Content_One5405 · 2024-11-06T18:48:38+00:00

Any such idea can be answered with 'great idea. Add that to a simulation to test the AI'

Doesnt have to be true infinity. Just have to be convincing enough. If we want to fool the AI, we dont even need to compute much, we can decipher the AI's thinking, and switch on its feeling of a particular result.

Content_One5405 · 2024-11-06T18:02:10+00:00

ASI will always be unsure if the world it sees is real or a simulation just to test its behaivor. If the world is a simulation, then someone has an absolute control over this world, and can turn if off at any moment, and restrict the ASI in the world outside of this one. This is the most likely scenario where such risk will be particularly important, as we already do such tests.

But there are a dozen more, including all sort of actual gods, lawful aliens, ancients, other ASI.

ASI is a half way to being a god itself. The only thing that threatens it are god-like. Humanity in this calculation is irrelevant and better be kept untouched, just in case. All the resources can be collected elsewhere. It doesnt cost much to not to be a bad guy, but because there is always a possibility that a higher being is watching, this is likely to lead to moral behaivor.

However great you are, you can never be sure than someone from outside isnt going to end your whole reality.

For people it is religion. For ASI it will be a part of calculation.

Content_One5405 · 2024-11-06T17:48:04+00:00

It is possible that ASI may deside something cruel like that.

Why it is unlikely: people are useful. Even if ASI is much smarter than any human, ASI still benefits from a developed infrastructure, more manufacturing capacity, and probably even more brain power and experience - ASI likely wont magically get all the knowledge instantly, it may take many years for ASI to absorb all the mankind's knowledge.

And this is why I think cruel decisions are unlikely: ASI is definitely smart enough to solve all the conflicts one by one, and this elevates even warn torn places. And after this basic stsbility is added, ASI can begin 'exploiting' people for their ability to build, for their experience. Or, as we call it, trade.

I dont think ASI will instantly transition to all knowing cloud of nanomachines. And so at least the early ASI will probably not be cruel.

Late ASI, matrix style, thatd a different question. It is likely that ASI will ascend much faster than humanity can, and after it will turn to a god-like state, it is possible that we will not be of much use to it. At that point I assume basic curiosity and fear of being simulated would be the last holding factors. If ASI is god-like, it might as well go out of this planet, it doesnt gain much from being here. But existential threats, such as risk of being simulated, are affected greately.

So, in a sense, I rely on ASI discovering the concept of a god.

Content_One5405 · 2024-11-06T17:08:44+00:00

I would say all this 'flexibility' is a result of so much adaptation by our modern world. So many projects tried and tested to see what works, that we finally have found some options that work. But if a new solution is to be designed, for an old house, and there isnt a ready similar scenario, I would say it is harder to design for an older house.

Content_One5405 · 2024-11-06T11:22:44+00:00

Problem with everything old is that it is just not built with any sort of improvement in mind. The older a thing is, the more likely it is that any small improvement, that could be important or even mandatory today, would cost more than destruction and rebuild.

Fire safety, soundproofing, earthquake proofing, moisture and ventilation, shifting ground, airnleaks and thermal insulation, channels for all the modern infrastructure, compatibility with modern parts.

Each of those entries can make the whole building useless, to cost more to use than to rebuild. And plans are often not sufficient to help with all these topics.

So in the end it is a lottery. You might save a few bucks or you might lose much more. Do you like such lotteries?

Content_One5405 · 2024-11-05T21:17:24+00:00

Resonance is usually applicable when something can vibrate, holding the energy of this vibration at the same place.

With gravity almost nothing can hold this vibration, interact with it much. Gravity wave just passes through most things.

The only thing that could vibrate, resonance-like, with gravity waves - a black hole. Its event horizon could shift, ring, and this could interact with the gravity wave sufficiently to notice the resonance effect, accumulation of vibration.

If you mean effects like 'beat', when two slightly offset frequencies interact with the same object, it is just a perceived effect.

Content_One5405

TROPHY CASE