Everything posted by Alex Mercer
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Does absolute measurement only exist in the mind?
Ok thanks sensei. But how does that explain that quantity of objects is always whole number. How do we even know that we are measuring exactly. Are current tools we use so precise? I searched up the question on Google and it came up as a similar question on quora. The answerer said that it is like trying to find the measurement of an object with infinite precision (I remember learning about some of this such as precision accurate and significant figures). Then it talks about how all the quantum particles in the object are moving around so no exact point to measure from and so if we tried to freeze them to get an exact point, it is impossible to do. It then says due to Heisenberg uncertainty principle, ultimately that however accurately we measured the object, you cannot know exactly where it is, because the universe will not allow you. I don't know if that applies to speed of light or photons. How do we know the speed of light is constant if we cant measure it to an exact degree or can we? Isnt there always percentage error in physics due to inaccuarte nature of tools or how universe is
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Does absolute measurement only exist in the mind?
Can you explain why please. I don't have much of a physics background besides high school physics and some Google searches.
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Does the expansion of space mean anything for the movement of matter in space?
For example, is earth moving in some sort of direction due to expansion, are the galaxies and other planets movies in a direction at some pace. Thank you in advance!
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Does absolute measurement only exist in the mind?
Was thinking about how people measure stuff to find their length, width, weight etc and was wondering if there is something that describes the fact that we can't measure things to exact numbers. Like measuring things with a 60cm ruler is only approximating it right? I was wondering if this applies to all things that require measurements in the world, even experiments that we do, even examining the speed of light. How can we perfectly measure something if we are always trying to find an exact point to which to measure to and from (that doesn't exist). And with my limited knowledge I know that at quantum scale there are sub atomic particles and I think these have no fixed position so even if we go all the way to the tiniest scale, what are we even measuring? So what are your thoughts, is this a common question that has already been answered? Just left we me wondering about Thanks in advance humans!
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Hiatus
Seeya, thanks for answering my questions. Good luck on your journey ahead.
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Where is the core principles that govern mathematics?
I think that guy is looking for like a math of math, I'm wondering if their is a commonly known book where the axioms and proof that are the foundation for all math is. Does it exist or is this sort of stuff spread through various books
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Where is the core principles that govern mathematics?
What textbooks? Is there like a bible for math?
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Where is the core principles that govern mathematics?
For example I asked around the proof of for 1 + 1 = 2 or mathematical proof for any addition and people mentioned different mathematicians for the proof. What is like the standard that is used as the foundation of mathematics. I took high school math but that is about it, I know from a little reading that there are axioms which I think are the foundation of math. Is there a place where these axioms are collected into one?
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Do you understand the articles on arXiv?
The physics section specifically. Can you read it like most people are able to read the newspaper? Do you understand what they are writing. Is that like a news place for scientists? Has anything big come from arXiv? Thanks
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How are experiments for major scientific theories performed and verified?
Is there a link to the process in which is done for layman to read. Random thought is what if someone just fakes a result to get a desired outcome. Is there like a group of people/association that you must inform and must be there to verify everything that is done in the experiment and whether it is valid etc.
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Is scientific discovery/theory development best left to professional scientists?
Kinda off topic from op. But do those people who do experiments to validate scientific theories put out there results and data for the general public to view. Example: the large Hadron collider where they experimented for the existence for the Higgs particle. I am just curious if they do not interested in reading it that much (I probably wouldn't understand it anyway)
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Request for friendship by Fatima Hanson
I got spam email today from someone. Here is the email: "Hi, How are you doing today, i just came across your profile and it really interested me to contact you, i hope we get to know more about each other, share ideas, meet someday and i would like to learn more from you, please contact me back soon via deleted so i can tell you more about myself okay" Could be legit, neverknow, but if she/he has never met me before and is saying all these things like meeting up then it probably means they are trying to do something funny. Can they be banned based on me thinking she is upto something even though she/he hasn't done anything yet? They are also following me.
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Is scientific discovery/theory development best left to professional scientists?
Just through lurking these forums I see people post their theories about what may be possible but most of the time cannot back up. I am talking specifically about physics. Has it always been something left for professionals to work on or has their ever been times when hobbyists have contributed in some way? What comes of discussing physics if you are simply a member of the general public and not a professional scientist/physicist?
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Can you recommend an 'introduction to programming using C++' book?
I have tried Bjarne Stroustrup (the creator of C++) book which is for absolute beginners but it was a mess. I looked online for reviews of the book and people seemed to share the same opinion about it though some swear that it worked wonders for them. Is C++ a good starting language? I want to possibly be a software developer in the future and from what I read they said that once you learn C++ all languages become super easy to learn and understand. So please recommend me a good book I can buy to get in depth tutorial on the language and programming. Thanks
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What does a particle actually look like - if a person wanted a realistic image of it in their head?
Wow it got really technical, now I don't understand!! Oh well...
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What does a particle actually look like - if a person wanted a realistic image of it in their head?
I have seen some pictures when I was in school where they used coloured balls to represent sub atomic particles. I have also seen on Wikipedia the probability clouds of where a particle may most likely be but that doesn't tell you really what a particle looks like. So what does it actually look like? How do I start thinking of a subatomic particle in my head?