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  1. Mmm_Pasta

    I Finding Real and Imaginary Parts of the complex wave number

    The positive sign must be taken for k to be real. Taking the negative sign would result in a negative value and hence k would be imaginary since the square root of a negative number is imaginary.
  2. Mmm_Pasta

    Schools How to achieve the best results in life

    Everyone has a different set of values and a lot of things in life are neither correct or wrong. There is a lot of context that shapes the way people look at the world around them. We could give you advice or list off things that helped us, but we don't share the same past experiences or...
  3. Mmm_Pasta

    How Do I Motivate Myself?

    ADHD isn't the only cause of lack of focus; these deficits are common with TBI, Bipolar Disorder, Tourette's, and many other disorders - the brain is complicated. It could also be due to reasons that Choppy stated. That's why I gave a suggestion for getting a professional evaluation. An...
  4. Mmm_Pasta

    How Do I Motivate Myself?

    Do you have cognitive deficits? I also have huge problems with focus and I find it hard to function while sitting down as well lol. I went through a neuropsychological evaluation and had very noticeable impairments with attention and short term memory. For example, if you told me a short story...
  5. Mmm_Pasta

    Musicians that went science route instead?

    I was originally a music/math major when entering university. I switched the music major to physics due to family pressure and I chose physics since the curriculum looked interesting. I played saxophone back then, but nowadays I play bass guitar and classical guitar. Usually classical guitar due...
  6. Mmm_Pasta

    Small oscillations in nonholonomic systems

    Non-holonomic systems are not covered in much detail to begin with. I haven't had to encounter non-holonomic systems in my other courses. Although, I guess you could say the same with Hamilton-Jacobi theory and Poisson Brackets with the exception of quantum mechanics. In my graduate course in...
  7. Mmm_Pasta

    Question about studying statistical mechanics before or after MQ?

    Oh ok! In statistical mechanics you will study both classical and quantum systems. You should be familiar with the particle in a box and harmonic oscillator problems. You also need to know what fermions and bosons are. Textbooks will usually bring these topics up I believe. This should be...
  8. Mmm_Pasta

    Question about studying statistical mechanics before or after MQ?

    What is MQ? Master's Qualifiers? Modern Quantum? What is your background?
  9. Mmm_Pasta

    Engineering Is "real" job anxiety normal (fresh graduate)?

    Anxiety is a normal thing to experience. There are varying levels of it that depend on the person and situation. We all have different ways of experiencing and coping with life. You are going through changes and you are not alone in what you are experiencing. Do you anyone that you can talk to...
  10. Mmm_Pasta

    How much free time do you guys get?

    I've heard things about residency/interns and medical rotations in terms of large hours worked. There isn't much regulation in terms of hours as far as I know for this. It is also highly dependent on the field you work in. I believe current regulation is 80 hour work weeks and one cannot work a...
  11. Mmm_Pasta

    How much free time do you guys get?

    I wouldn't say it is a warped sense of reality; that is a bit extreme. The OP grew up being told that experts spend every living moment involved in their field, so it is easy to see how they would think that. They probably haven't had a lot of experience interacting with the experts they are...
  12. Mmm_Pasta

    Studying What is the most effective way to study?

    Here is a brief what works and what doesn't:,_What_doesn't.pdf Doing problems is a good strategy. Self-testing as well. In addition to what symbolipoint said, if you look at a solution, ask yourself where you went wrong and why...
  13. Mmm_Pasta

    Do You Even Physics bro.

    It's more of a tongue-in-cheek type of slang in a certain portion (Misc.) of a certain forum (bodybuilding forums). A lot of the members there are actually intelligent. They pay heavy attention to nutrition and discuss what research literature has to say. It's just like here at PF where there...
  14. Mmm_Pasta

    Do You Even Physics bro.

    Are you salty OP? Do you even lift? Zyzz is GOAT denial/10 Ayyyyyy I think I've spent way too much time lurking on the bodybuilding forums...
  15. Mmm_Pasta

    What makes a good question in your opinion?

    I think having students take limiting cases could be one way for a student to rationalize why there solution is correct/reasonable. As for numerical answers: order of magnitude, comparison to real world scenarios, etc. are other ways of rationalizing that the numerical answer makes sense. I took...
  16. Mmm_Pasta

    Electrons in periodic potentials -- lesson

    I'm actually curious on how this went :P
  17. Mmm_Pasta

    How many hours to study for quals?

    Are you sure about that? A grad qualifier may consist of four questions on a single topic with a three hour limit. The GRE is one-hundred multiple choice questions over a broad range of topics with a three hour limit. You will need quite a bit of intuition and be able to recognize wrong answers...
  18. Mmm_Pasta

    I Too much info for multiparticle wave function?

    The wave function can be represented in many ways, including a one-particle wave function. Your description in the first post describe a wave function represented in position space. However, you could have represented it in momentum space as well. The wave function for a particle with spin also...
  19. Mmm_Pasta

    Physics Need guidance from someone who has knowledge about spectroscopy to find chemical composition

    Is this a project you were assigned by someone or a personal project? You will have to use different types of spectroscopy to characterize food composition depending on the item you are studying. Here is a link I found with a quick Google search ("spectroscopy food composition)...
  20. Mmm_Pasta

    Studying Tips on learning quantum mechanics

    In addition to what jtbell asked, have you had any previous exposure to physics? You mentioned you are just starting your journey in physics. It may not be a good idea to jump straight into quantum mechanics. We need to know your math background as well as any exposure to physics you have had.
  21. Mmm_Pasta

    Studying What's wrong with my study habits?

    Pruxxia, there is a lot of research done on how people learn. Studying more does not necessarily mean you will perform better than someone who studies less. The key is to studying effectively and efficiently. Take a look at...
  22. Mmm_Pasta

    How many hours to study for quals?

    You should be studying smart. If you spend 500 hours studying areas you are strong in or comfortable with, that really isn't useful study time. We can't give you an estimate for time: too many variables to consider. Also, cramming 500 hours into a single month is far less effective than...
  23. Mmm_Pasta

    Studying Not doing well in a class -- Teacher is abusive. help please

    I agree with Vanadium and Dr. Courtney here. I've looked at your post history and I believe you should get help for your psychological issues if you are not already. I do notice one problem you have is you expect immediate understanding/results. Yes, there are things that the instructor could do...
  24. Mmm_Pasta

    B Help understanding recent work on "Space-Time Crystal" and TTSB please

    Kind of: explaining something in simple terms to someone with no background in physics is different than explaining something in simple terms to someone with a strong background in physics. There are limitations in diluting material simple enough to understand. Also, people have varying skills...
  25. Mmm_Pasta

    B What is the evidence that there is gravitation?

    That "something" we see, we simply label it as a force that we call gravity. This "thing" we call a force, with the name gravity, has certain properties and it explains a large amount of phenomenon that we see around us. Otherwise, we'll be going into an argument about semantics if I'm...
  26. Mmm_Pasta

    Studying Need help finding an ok sleep schedule while in school

    Tell that to someone with Bipolar Disorder. Do some reading on circadian rhythm: Even something such as not sleeping the same time every day can have negative effects. Some people are rather ultra-sensitive to this.
  27. Mmm_Pasta

    Cool Optical Illusion and Our Created Reality

    It's interesting to see a scientific viewpoint of this. Creating an optical illusion is somewhat simple if you understand how to draw in perspective and colour theory. Books on these describe how objects out of the cone of vision become distorted, how the line of sight works and how you see...
  28. Mmm_Pasta

    Job Skills Increased demand for STEM in the next 4 years?

    Disagreeing with one's views and having your own views challenged is not a healthy reason to ignore someone.
  29. Mmm_Pasta

    What Subfield of Physics has the *most* QM involved in it?

    QFT is not necessarily the relativistic version of QM. You can have non-relativistic quantum field theories. It's an extension of quantum mechanics to infinite degrees of freedom. Here's something to see some connections between QFT, classical field theory, and relativity...
  30. Mmm_Pasta

    Programs Not sure which science major to study

    Anyone with a diagnosed mood disorder (or any mental illness for that matter) is disqualified from joining the military. Joining the military is not going fix such an illness in the same way that joining the military will not fix cancer. I agree with Bipolar Demon and Stat Guy; please get help...