MigL

Normally that wouldn't be requred, as you seem to have an excellent understanding of the Physics involved. However, Awaterpon might not even be convinced by the 'brute force' method of everyone else on the Forum presenting valid evidence contrary to his calculations.

Quite often it is the perception of an opinion, or event, that politicise that opinion, not the intent of the people offering the opinion.. This might have more to do with a perceived inequality of opinions/articles, by you, where none actually exists; IOW,look in the mirror. As for the origins of SARS-COV2, by all means, it needs to be investgated; It is certanly fair to criticise the Chinese government for their actions ( excessive secrecy, human rights violations, predatory economic policies, 'bullying of other nations in SE Asia, etc ), but not of Chinese people.

What do you mean '1 kg pushed the 4 kg' and the other '1 kg went away' ??? That is not conserving momentum. The 1 kg that goes along with the 4 kg is not pushing it ( that makes no sense ). Momentum conservation demands that, as a consequence of the 1 kg 'going away', the 4 kg +1 kg has to go in the opposite direction at about 1/5 velocity ( modified by the Lorentz factor at relativistic speeds ). that is how a rocket works. X-posted with Swansont

Even if your mathematical model was found to be self-consistent, there is no guarantee that it is actually applicable in any/all circumstances. The mathematical model has to describe a physical system, so don't go jumping to conclusion regarding applicability to BHs, Hawking radiation and the 'information paradox'. Even GR is not applicable in some circumstances, as evidenced by the un-physical singularities it predicts.

Any disturbance in the atmosphere will propagate at the speed of sound. If the disturbance is moving towards/away from you, there will be Doppler effects. If the disturbance is moving towards you faster than the speed of sound, you will not hear it until the leading shock and disturbance arrives. Your question, as it is, seems to be 'ill posed', and I don't see what conclusions/insights you can draw from it. ( at least, pertaining to Relativity, which is your usual area of interest )

We've heard you mention 'your theory', now, for several days, yet most of us don't have a clue about it. The only thing we know is that it failed a previous peer review, and none of us are going to your link, to read and try to understand what could be 400 pages of garbage. If you want people to discuss 'your theory', post a brief description here, and we will be glad to dissect and critique it ( even if you don't like our criticism ); otherwise quit bringing it up in multiple threads. IOW, put up, or shut up !

What do you mean by 'two' explosions ? There is only one explosion resulting from their collision, and because your ears are 8 in. apart, you will be able to discern the direction it is coming from. If there are two explosions resulting from reasons other than a collision ( ?? ), then the explosions are spatially separated, and will arrive at your ears at different times. These are common, every day occurrences, and readily apparent. Either that, or I'm totally misunderstanding the question.

I've been using the free version of Ccleaner for almost 15 years ( introduced in 04, I believe ). I run the system cleaner every time I shut down one of my computers ( about 18, all Win10, except for one Raspbian running RetroPi for old games emulation ), mostly to clean out cookies, and never had an issue. I run the registry cleaner ( all boxes checked ) every time I install/uninstall software, or MS updates me, and again, I've never had an issue.

Your ears can 'locate' the origin of sounds because the sound has to travel different paths to your two ears. Unless you are V van Gogh, I would think this is apparent.

Download the free version of Ccleaner. Download CCleaner | Clean, optimize & tune up your PC, free! and let it do the clean-up.

IIRC, the 'doomsday clock' originally ( since 1945 ? ) considered only nuclear armageddon, but now includes many other threats to human existence. These other threats, such as Global Warming, global viral Pandemics, water and food shortages, etc., not only add to each other, and the overall threat level, but some of the threats are 'caused' by some of the others. Overall, the OP seems a 'glass half empty' excuse for a rant. Now is not the time for people to 'lose their sh*t'; it is a time for deliberate and calculated decisions. With a little 'glass is half full' optimism, good will, and the right decisions, this truly is a wonderful time to be alive.

Why don't you post the ingredients list of the salt you used, so we can possibly eliminate the salt as the source of the discoloration ? Better yet, why not be a good Italian, and stick to 'vino', rather than craft beers. I recommend a nice, and very drinkable, Aglianico from the Irpinia ( Campania ) region.

And I thought I lived in a rough neighbourhood. Always thought Iowa was a calm, almost boring state.

Evil is a social construct, and, while social behaviour is an evolutionary effect, there is no evidence that its constructs have have an evolutionary cause or impact. Not everything has an evolutionary aspect; some of the sh*t, we just made up.

The speed of light barrier is a 'bummer'. So much so that people, even scientists, are grasping at straws, trying to find ways around it. The 'semantic' approach notes the difference between moving through space, and moving with space. And it results in more problems than it solves.

Just do more fishing, and re-purpose the cooler for storing fish. Problem solved ...

Not much to add with my low opinion of R Paul, but even A Fauci has recently admitted that the possibility that SARS-COV2 may have escaped from the lab is there. We just don't have enough information yet, and we may never, as China s refusing to release records from WIV, and resisting further investigatio into the origins of the virus. The author of this piece has an obvious agenda against certai people, such as P Daszak and even A Fauci, but the details are factual and indicate circumstancial evidence for both, the virus jumping from bats to intermediate species and to humans naturally, or the engineered 'gain-of-function' and accidental ( or incompetent due to lax protocols ) escape from the Wuhan lab. Origin of Covid — Following the Clues | by Nicholas Wade | May, 2021 | Medium I don't necessarily agree with the author's conclusions, but do agree that more information is needed. And only China can supply that information. It is also a lengthy and informative but easy to understand article on virology and the rationale behind 'gain-of-function' research, which B Obama tried to stop ( IIRC ), but D Trump re-instituted.

As exchemist explains, there is a fundamental reason for such types of machines not to work. But, on a practical level, how do you extract power from the free-floating fans ? You have removed the bearing that drives them, but you still need a physical connection,such as bearing/shaft, to extract power. Even using airflow generated by free-floating fans generates friction/heat in the airflow, so you are no further ahead. In any system with a continuous symmetry there is a corresponding conserved quantity ( Noether's theorem ). If the Lagrangian does not change over time, total energy is conserved.

My thoughts on the OP ... What does it mean, Alex, when you 'notice' the race ( for lack of a better word ), and the culture of people you congregate with, and feel the need to modify your behaviour to accomodate the circumstances ? This is regardless of whether you modify your behaviour to accomodate them, or to accomodate yourself. Maybe some day we can get away from even noticing the differences whic divide us into races, ethnicities, cultures and other such groups.

Personally, and regardless of sex, I think it should be a rectifier between the AC and the DC. But if I had suggested that when they were still together, Angus would have hit me over the head with his guitar.

I find it quite annoying that you can criticise the speck in the mods' eyes; they are human after all, and we all have some biases. Yet you refuse to cknowledge the tree trunk in your eyes, that stubbornly refuses to follow rules for discussion, present evidence to support your position, and acknowledge evidence presented against your conjecture, evidence which supports current accepted theories. There used to be an old saying along those liines. I think you'll find it in Matthew 7.5 in the King James version of the Bible.

Don't remember much about mathematical spaces, but there are several differing examples of physical spaces also. You can define space as a certain height above Earth's atmosphere, and even then there are several qualifiers for the space between planets, stars and galaxies, as interplanetary, interstellar, or intergalactic space. The space where all possible states of a system are represented as unique points, is called a phase space. And, of course, the space represented by X, Y, and Z co-ordinates, once a co-ordinate system ( cartesian in this case, but there are many others ) is assigned to a volume. I'm sure there are many more, and I don't really have a problem with the different definitions. If one qualifies which definition they are using, even a newly made-up one, so that we are all on the same page, we can engage in a fruitful discussion. Often many non-math or non-science noobs will use a wrong definition, and they are often asked what they mean by such a term, as it is non-standard.

Just noticed this, Studiot. First I had to look up what a 'clapper' bridge design is 😳 . Once I had done that, I would say that the first Neolithic designer used science to observe how people could step from stone to stone when traversing shallow waters, and then came up with the idea that if the stones are too distant, why not drop wooden boards, or tree trunks, between them to 'bridge' the distance. The second person to build one, applied this observational science, and, as engineers often do, optimized the construction, using flat-top pillars on which he may have rested wooden boards, or even concrete slabs, eventually.

I've forgotten whole years because of JD.

Not that I was proposing an increase in hostilities, but some people ( those directly affected by the violence ) probably do. On both sides.