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Sensei

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Everything posted by Sensei

  1. If someone was smart, he wouldn't want to be president.. (or king, emperor, or dictator etc.) The problem is those dumber presidents-to-be that we should avoid at any time..
  2. Your question is so childish that I don't know where to begin.. Every country has some leaders who are temporarily elected or have temporarily taken power over an area and have their own objectives, mainly to stay in power. They will support any side, as long as it allows them to rule a bit longer. Countries without natural resources (such as Japan) will naturally support anti-coal and anti-oil movements. Their goal is energy independence from other countries, which is difficult if coal, gas and oil must be imported. One country may agree with certain aspects of its enemy country, while disagreeing with other aspects that hit their economy (e.g., coal, gas, oil industries). The same can be said of a friendly country. There is no monolith in the West and there is no monolith outside the West. The world of politics is groups of common interests. They make temporary secret agreements among themselves. Sometimes it is obvious from other sources, such as economics, it is possible to deduce what they will support their partners in, without going into the details of their bilateral relations.
  3. ..I remember people claiming they would be rich because a fortune teller told them so in the cards..
  4. Have you heard that there are people who hold funerals for their sanitary napkins.. ? https://www.google.com/search?q=sanitary+napkins+funeral
  5. @Eise phileo + sophia = love of wisdom, in the distant past, with modern redefinition of this word, it is very hard to agree with it.. Many old, good-looking words have been redefined in such a way that they no longer have the same meaning as they did two or three thousands years ago.. ps. The marketing staff is even better at disgusting people for certain words..
  6. Michelson was biased and you are biased too. Other people responding here are also biased because they now take what they learned from books as dogma. Not many have equipment at home to perform experiments by themselves. It's hard to get past dogma, or even imagine that you can get past dogma. That's why the best results (discoveries) come from young students who have nothing to lose in the scientific world. Once someone gets a reputable name, it is very difficult to enter a controversial topic and potentially lose all respect. If you bought the required equipment and started doing physical experiments, the conversation with you would be much more fruitful. It is not very expensive. An investment of a few hundred to a few thousand dollars. Much less than the time spent on the discussion.
  7. No single particle has a shape.. The probability density function is not a shape.. We learn about particles (molecules, or macroscopic objects) from observations and the interactions they caused on other objects.. If/when photon is detected it disappears i.e. it is absorbed.. Beyond that? https://en.wikipedia.org/wiki/Lepton_number If you shoot at a flying birds with a shotgun, you will shoot several birds (I don't recommend this, it's just an analogy). If you shoot enough bullets, you should find out the size of the birds you tried to kill by simply looking at which bullets missed the target. The same is true for particles that can be placed at rest, in their rest frame, such as a proton or the nucleus of another element. The number of bullets is counted in the millions or billions. So you can get a pretty good image if you hit something and it is reflected or you miss.. We find out about the existence of one particle by hitting it with another particle, which we can control, e.g. a beam of photons, a beam of electrons, a beam of protons, etc. Unknown target hit by known source and observation what happens. e.g. a new beam of photons from that target (e.g. spectroscopy https://en.wikipedia.org/wiki/Spectroscopy ) If you have a better idea, you should start a new thread. But you'd better check it out for yourself. That's what scientists do, first they experiment, then they talk. You seem to be doing the opposite. ..one (you) can make experiment at ~ 0 K.. Did someone forbid you to do physical experiments? I said that neither the photon, electron, positron, neutrino, antineutrino, etc. have a shape... By saying "What is the unit of intensity?" I wanted to point out that intensity has already defined units that don't match your.. https://en.wikipedia.org/wiki/Intensity_(physics) "In physics, the intensity or flux of radiant energy is the power transferred per unit area, where the area is measured on the plane perpendicular to the direction of propagation of the energy." ..no one is forced to do so..
  8. The whole subject is so deep, I don't even know where to start.. How about pair production? https://en.wikipedia.org/wiki/Pair_production
  9. You've already done it. The rest is in the Python documentation https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files https://docs.python.org/3/tutorial/errors.html
  10. In 2014: https://www.forbes.com/sites/russellflannery/2014/09/09/chinas-rise-isnt-a-threat-to-the-u-s-former-president-jimmy-carter-says/?sh=217a83ee235b "China’s rising success in the world isn’t a threat to the United States, former U.S. President Jimmy Carter said in a speech in Shanghai to mark the 35th anniversary of the establishment of diplomatic ties between the two countries this year."
  11. ..this is the case with any device.. My primary phone ATM was made in 2019. It has Android v10 built-in. It wont be updated to v11, v12, v13 or v14 etc. I can do it myself. LineageOS or AOSP or Kali nethunter.. and have Android v14 or my own OS.
  12. Simply, don't plug TV to the Internet.. Make sure there is no open WiFi around you etc. Don't let TV to use your WiFi hotspot created by phone etc. etc. If you do so, change password on the phone every time you are done with the TV. ps. I know a person who cuts the circuit connections on a Visa debit card that allows NFC/RFID transmission....
  13. You have AOSP. You can download, install, compile, upload your own OS, and modify it the way you want it to work.. Are you living under a rock? https://www.google.com/search?q=siri+listens+to+everyone Say "Hey, Siri" or "Hello, Google," etc. If the app is open, the microphone has to listen to everything to detect your words. https://www.google.com/search?q=siri+data+leak
  14. Ads bring money to the site owner. Scientists are smart enough not to click on most of them. Therefore, the return on investment is zero or marginal. So people who own a website will try to make the ads more aggressive or force people to click them by mistake, etc. etc. tactics are used. Streaming sites such as YouTube display 5-second ads before allowing you to skip. Some other streaming sites require 30-second views, or I even know of one that requires 5 minutes long ads watching. It is so aggressive that it detects if the user has clicked on another browser window and pauses the video ads, until you finish 5 minutes...
  15. Check if it is possible and install LineageOS on it. https://lineageos.org/ If you're using the Chrome browser on an Android device, don't expect them to chop down the tree they're sitting on.
  16. The ads are personalized. Take a screenshot of what ads you are talking about.. Are you complaining about their quantity or quality? When I open SFN from my Linux desktop, logged in or not, I don't see any ATM ads. When I open SFN from my cell phone, I see some ads. On neither of them am I logged into either a Google account or an Apple account.
  17. Diameter has a unit of meters, area has a unit of meters ^ 2. Volume has a unit of meters ^ 3. What is the unit of intensity? What is the unit of power? What is the unit of energy?
  18. None a single particle has the shape.. If you have many particles bound together by forces (e.g. proton, meson, exotic atom), they have what can be called shape ("the probability density function of finding a particle in a certain place at a certain time"). Look. particles mostly pass through each other undetected. Hence the Geiger-Marsden experiments, also known as the Rutherford gold foil experiment. https://en.wikipedia.org/wiki/Geiger–Marsden_experiments When there is a lot of them, e.g. thick layer of Gold, particles eventually hit something and are being reflected. But some of them pass through it like they were flying through nothing.. Macroscopical equivalent is a swarm of meteors passing through the solar system.. A collision with some planet occurs after billions of years. If you have macroscopic object with billions of billions particles e.g. ball, it will hit the wall, and being reflected by it, there is billions of billions particles in the ball, and there is billions of billions of particles in the wall which interact. If we have a single particle and a single "target," the chance of hitting and interacting is extremely low.
  19. It is relative. The one observer will detect it as 21 cm, the other might it detect as 42 cm (red shifted), the other might it detect as 10.5 cm (blue shifted). Actually any wavelength. Because in Special Relativity you have no absolute wavelengths.. https://en.wikipedia.org/wiki/Redshift https://en.wikipedia.org/wiki/Redshift#Blueshift None a single particle has the shape.. Such questions have no sense.. Particle is detected if it interacts ("hits") the other particle. If it hits it, it transfers some physical quantity on the second particle. Therefore we know there was interaction.. The diameter of an atom can be "measured" because scientists use the flux of other particles toward the nucleus. If these are reflected, the "diameter" of the multi-particle entity, called the "nucleus," can be measured by the angles at which the initial particles were reflected. It is called cross section. https://en.wikipedia.org/wiki/Cross_section_(physics) The different isotopes have different cross sections. "If a poacher shoots birds with a shotgun, he will eventually shoot any bird.." The wavelength is a property of the particle. Its (kinetic) energy can be mentioned instead of wavelength and get the same results.. e.g. the beam of electrons in vacuum with kinetic energy of 100 keV has similar effects on the matter as beam of photons with 100 keV. e.g. electrons in the matter will be excited and/or ejected (with the exception that other physical quantities such as Lepton number, must be preserved, so electron gives its kinetic energy, and is not disappearing (is not absorbed) ). Instead of saying "green photon" or "photon with a wavelength of 532 nm," you can say "photon with an energy of 2.33 eV." It's all the same.
  20. Wavelength is part of the photon energy equation E=hc/wavelength
  21. Philosophy is a pseudoscience. Physics is a real science. Too often you ask philosophical questions.. ask physical questions, such as "how to measure the speed of something", "how to measure some physical quantity", etc., and you will get the right, truthful answers.. ..one water molecule hits another molecule, which hits another molecule, and there is a momentum transfer between them in all directions, they hit something, while molecule remain at place (plus, minus, a little margin of tolerance (in global scale) ).. They are called photons..
  22. Sensei

    steady metals

    It is pretty simple. If you drink such water, Tritium (with half-live 12.3y) becomes part of your body instead of Hydrogen, and decays inside of your body, destroying your cells and/or the DNA of which it is a part.. If fishes or sea plants are contaminated by it, and you, or animal will drink it, or eat fish, you will be contaminated indirectly.. https://www.google.com/search?q=tritium+contamination
  23. Beta decay can cause gamma radiation if the nucleus is not in the ground state and must return to the ground state. https://en.wikipedia.org/wiki/Gamma_ray#History_of_discovery Beta decay plus will cause positron emission, so it will eventually be annihilated, and gamma rays will also be produced..
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