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  2. Indeed, but it is a path to scientific understanding...
  3. I agree that an accident is more likely, that said if Israel or the USA wanted to plan an assassination but wanted a situation where they could cast blame on something else to create plausible deniability, knowing the Iranian president was going to be on a route known for bad weather conditions, add in that the fog could conceal the activity of assassin's, it might have been an opportunity too good to pass up. But yeah, I'll assume accident until proven otherwise.
  4. Today
  5. When materials break, like tearing paper or unwinding duct tape, here's what happens: Energy Release: When you tear or unwind, the bonds holding the material together are broken. This breaking releases energy suddenly. Vibrations: This energy makes the tiny parts of the material (like fibers in paper or adhesive molecules in tape) move rapidly back and forth. These rapid movements are vibrations. Sound Waves: These vibrations cause the surrounding air molecules to move in waves. These waves travel through the air to our ears. Hearing Sound: Our ears pick up these waves, and our brain interprets them as sound. So, in simple terms, the breakage causes tiny parts of the material to shake quickly, creating waves in the air that we hear as sound. Physics is such an interesting subject. You can check here for more on Just physics https://en.openprof.com/wb/subject:physics
  6. Interesting paper thanks for sharing.
  7. On previous drawing light clocks were not perpendicular (movement direction of light dot) to direction of movement of mirrors (v2). Here is explanation for light clocks (movement of light dot inside the clock - system / event 1) moving perpendicular to v2(movement of mirrors). The observed length ( orange do) in non moving (t=0)and moving (t1=1 s) of light dot trajectory of clock 2 which is observed by observer 1 id the same when mirrors are at rest and when mirrors are moving at speed v2(clock 2). In both cases speed of light dot of clock 2 is c and time travelled is 1 second. The difference is that when t=0 (time explains that two clocks 1 and 2 and their observers 1 and 2 do not move realtive to each other . Both light dots are moving - they are event 1 - reference event. They both travel at the speed of light c and travel the same distance 3x10e8m This is constant - this never changes. Observed trajectory direction is changing but the distance light travels in 1 second never changes. That is the hole and only purpose of light clock in time dilation experiment - reference light signal. From known light speed of light dots(vertical sytem/event 1) and observed angle Alfa between do- orange observed distance and direction of horizontal speed (system /event 2) we can calculate relative speed v2 between any two objects anywhere in universe . But instead using all of this - why do not we just make xyz greed for time and apply classic physics and get the total time . Than we make xyz greed for distance . Than from formula v=d/t find the speed . ?
  8. Now can I get it in a spray can to use against yellow jackets!
  9. It is. And at very low concentrations ( less than 10 ppm ) tends to smell of garlic and makes me hungry. ( seriously, limits are 0.3 ppm; at higher concentrations you lose the ability smell it )
  10. i wouldnt say this is a brain teaser or puzzle but just something to think about and discuss If you were to pick any 5 Countries to rule the entire world what would they be (feel free to include maps of what the boundaries would look like) Mine are the nordic countries like Sweden, Finland, Norway, Netherlands, etc
  11. Odd question... is phosphine heavier than air?
  12. Exactly... The kind that some people see, some don't want too look for and the rest are blind anyway. There's nothing intrinsically wrong with any of the Bible's if you read them with a good moral compass. Look what happened when Hitler read Nietzche. It is tangentially relevant... 😉
  13. What kind of "light" are we discussing exactly?
  14. Reality seems to correspond to properties of observables that are the same to any observer. (properties, rather than intrinsic qualities or substance or whatever) So statements that are "inter-subjectively" true are the ones that correspond to reality. All else is opinion and subjective. That's my best guess. So glad I could share these thoughts on Islam! 😁
  15. Being a bit pedantic there aren't we? In our everyday lives do any of those things really apply? Is our perception accurate enough to need to include those things? If we want to go that far then nothing is real and my vat is just as real as yours. This thread is about religion and our thoughts on it, religion is not part of objective reality, my opinion on Islam is the same as my opinion on mother goose.
  16. Less than 2% by weight. Mixed with either CO2 or N2.
  17. OF course it is, bc we're not discussing relativity and the reality of light; we're discussing a very different kind of light.
  18. What is real Moon ? If I'm moving relative to you, I measure a different reality than you do. Which one of us is at rest ? Which one moving ? Who measures the real 'reality' ? I do an experiment and measure a 'particle'. You do one and measure a 'wave'. What is the 'reality' ? For that matter, what is reality before wave function collapse ?
  19. I would say there is no way to measure emotional pain but objectively your sadness is not part of our shared reality.
  20. Well my reality is probably a bit sadder than yours ATM, but how do we define by how much?
  21. Over the years I've gotten the impression Iran is quite proud of its technical proficiency. Persian pride in their history of scientific and engineering mastery goes back a long ways. Reuters described how Iran has gotten around the sanctions on aviation parts by smuggling in components and reverse-engineering them. So this will be a national embarasssment as well as tragedy, for Iran. And as @MSC and others note, there will be politicized takes on what happened by countries who have a dog in the current ME conflict.
  22. There is, by definition, only one reality, our interpretation of the perception of reality exists nowhere but inside our heads.
  23. I am sorry, I thought we were discussing reality.
  24. But not in this context, for instance, "Brave new world" objectively, is a bloody good idea bc everyone is happy.
  25. A new solution to the warp drive problem has been found that does not require negative energy or negative mass has been suggested in this paper by Erik W. Lentz https://arxiv.org/pdf/2201.00652
  26. It has nothing to do with relativity, it has to do with reality being objective by definition.
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