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  1. PhotonSSBM

    Engineering Questions about applying for positions while I'm still an Undergraduate

    I've been working for a company I helped start for the last 10 months. In that time I've built quite a powerful product, which has attracted recruiters on Linkedin to offer me their time. Some of them have been exceptionally tantalizing. Right now, my company is finding it's way to being able to...
  2. PhotonSSBM

    Probabilities for two spin systems interacting in isolation

    Homework Statement Consider a system A consisting of a spin 1/2 having magnetic moment ##\mu_0##, and another system A' consisting of 3 spins 1/2 each having magnetic moment ##\mu_0##. Both systems are located in the same magnetic field B . The systems are placed in contact with each other so...
  3. PhotonSSBM

    Other Books on Data/Error Analysis

    I'm looking for a good reference book on data analysis techniques for science (namely physics) that has a lot of programming applications and some decent error analysis coverage. Right now I'm analyzing large datasets of telescope arrays and would like something to learn from as this is my...
  4. PhotonSSBM

    Stargazing Where's your favorite place to stargaze?

    I'm planning a trip for next year that takes me to at least one place where I can get a good view of the sky with a telescope I'm buying this Christmas. I could just google "best stargazing spots" but I thought it would be more fun to ask you awesome people where you go when you want to get that...
  5. PhotonSSBM

    Let's tell stories!

    I find so many stories so interesting on here that I thought I'd start a thread where we tell each other our funny/interesting stories from life. They don't have to follow a common theme, just let loose about something! Preferably at least a few paragraphs in length. If it's just a paragraph...
  6. PhotonSSBM

    Should Algebra Be Required At Community Colleges?

    http://physicstoday.scitation.org/do/10.1063/PT.6.3.20170728a/full/ The chancellor of the California Community Colleges system believes that students who are not majoring in math or science should not have to take intermediate algebra to earn an associate degree. California has the largest...
  7. PhotonSSBM

    Engineering Safeguarding Self Against Automation in Career

    Hi all, For those of you who work in field like software engineering, data analysis, and other tech industries, what measures have taken to make sure you'll always have a job in the face of automation. I know at my core what I would want to do if academia isn't an option after my PhD is work in...
  8. PhotonSSBM

    Complex Analysis-Maximum Modulus of ze^z

    Homework Statement Let ##f(z) = ze^z## be bounded in the region where ## |z| \leq 2##, ##Im(z) \geq 0##, and ##Re(z) \geq 0## Where does it achieve it's maximum modulus and what is that maximum modulus? Homework Equations N/A The Attempt at a Solution A theorem states that any function...
  9. PhotonSSBM

    Job Skills Weird situation with my job -- need advice

    So I am an employee of my university. Last semester I was given a stipend as an undergraduate researcher. For medical reasons I couldn't pursue that stipend this semester, but now have taken a job as a math tutor. Because I transitioned from one job to the other, I was informed that HR will...
  10. PhotonSSBM

    Admissions Hospitalization Withdrawals Effect on Admissions

    So I was hospitalized for some shenanigans with my brain wanting to kill me and had to withdraw late in the semester. 4 classes now have W's and I don't know how I could explain that to admission staff at grad school. Is it appropriate to put such things on personal essays or am I going to have...
  11. PhotonSSBM

    News Michael Flynn has resigned from the National Security Council

    For those out of the loop, it was shown that he broke a law(s) outlined in the Logan Act by performing diplomatic duties in contacting Russian government officials. There are a lot of rumors about what he said and the implications it has on how Trump is viewing his relationship with Russia...
  12. PhotonSSBM

    A Material on Galaxy Formation

    Arxiv and google searches turn up hundreds of sources on Galaxy formation. I'm specifically looking for good material on how Dark Matter distorts the motions of galaxies from what we'd expect. Currently I've been using a combination of Binney and Tremaine's Galactic Dynamics and whatever...
  13. PhotonSSBM

    B Finding Maxima/Minima of Polynomials without calculus?

    I'm tutoring a student who is in a typical precalculus/trig course where they're teaching her about graphing various arbitrary polynomials. Among the rules of multiplicity and intercepts they seem to be phrasing the questions such that they expect the students to also find the maxima and minima...
  14. PhotonSSBM

    I Calculating the Rotation Curves of Galactic Disks

    Ok, so I'll start off by saying this is NOT a homework problem, but it is a problem I'm having with a project I'm working on, and my supervisor has no clue as to why I'm getting the wrong results from a calculation I'm doing. So as you all reading this likely know, we can model the rotation...
  15. PhotonSSBM

    Potenital of a cylindrical, linear dialectric in a E-Field

    Homework Statement A very long cylinder of linear dialectric material is placed in an otherwise uniform electric field ##E_0##. Find the resulting field within the cylinder. (The radius is ##a##, the susceptibility ##X_e##, and the axis is perpendicular to ##E_0##) Homework Equations Boundary...
  16. PhotonSSBM

    Boolean Algebra Proof (Distribution and XOR)

    Homework Statement Use the definition of exclusive or (XOR), the facts that XOR commutes and associates (if you need this) and all the non-XOR axioms and theorems you know from Boolean algebra to prove this distributive rule: A*(B (XOR) C) = (A*B) (XOR) (A*C) Homework Equations All the...
  17. PhotonSSBM

    Gift recommendations for extremely motivated 5th grader.

    My niece is 10 years old and taking algebra 1 this year in school. She's very gifted and driven to pursue math. I want to give her a book that is going to introduce her to higher math concepts like sets and basic proofs, but I don't know what kind of book would be appropriate for her. She...
  18. PhotonSSBM

    Logic Puzzle in Base 8

    Homework Statement We call a seven digit number in base eight X, whose digits are given by ##abcdefg## No digits are zero, and none of them are the same. The following divisibility rules are true: (I)The number ##ab## is divisible by 2 (II) The number ##abc## is divisible by 3 (III)The...
  19. PhotonSSBM

    Studying Picking up necessary Classical Mechanics and E&M for GR

    My professor is mentoring me through learning GR over the next year with the goal of doing research with me in the long term in the field. I need to pick up a few things along the way. The summer is going to be spent mostly picking up the necessary material for jumping into Carroll's book, and...
  20. PhotonSSBM

    Other Imposter Syndrome?

    This semester has been my first at a legit research university with a legit physics program. I've been doing pretty well in my first physics class here (honors intro physics 2), but not amazing (B+, not really at the top of my class). My professor and I have gotten pretty tight though. Over the...
  21. PhotonSSBM

    Justifying Ampere's Law and Faradays Law with an experiment

    Homework Statement Given Ampere's Law and Faraday's Law (in differential or integral form fwiw) explain why it is easier to design an experiment to show that a changing magnetic field creates an electric field than it is to show a changing electric field creates a magnetic field. Justify your...
  22. PhotonSSBM

    Relativity Modern books on Special Relativity

    I'm looking for a rigorous book on SR for some summer reading. Preferably something that covers a lot of the stuff in this document really well, http://ocw.mit.edu/courses/physics/8-033-relativity-fall-2006/readings/guide.pdf The website recommends older books by French and Resnick, but I've...
  23. PhotonSSBM

    Share your best healthy recipes here

    I'm looking for more ways to incorporate vegetables into my household's diet. What are some of your best recipes to do that? As for what our preferences are already, we both love broccoli, carrots, onion, asparagus, peppers, peas, tomatoes, and spinach. I typically cook them up in a stir fry...
  24. PhotonSSBM

    A charge experiencing simple harmonic motion

    Homework Statement Two positive charges +Q are held fixed a distance apart. A particle of negative charge -q and mass m is placed midway between them, then is given a small displacement x perpendicular to the line joining them and released. Show that the particle describes simple harmonic...
  25. PhotonSSBM

    Insights So You Want to Go Back to School - Comments

    PhotonSSBM submitted a new PF Insights post So You Want to Go Back to School Continue reading the Original PF Insights Post.
  26. PhotonSSBM

    Re-studying Series for ODE's due to weakness in material

    My series foundation is really weak, and this spring I'll be taking Differential Equations. I know series plays a big role in solving some ODEs, so I'll be re-learning the material from Calc 2 to make sure I'm up to par for the class. I'll be working through Stewart's chapter on series but was...
  27. PhotonSSBM

    A thread for those who want to go back to school

    I'd like to make a thread like ZapperZ's for people who want to go back to school after years of being out. That's where I started at 2 years ago, and I've had a lot of success in my own studies and mentoring others in the same boat at my local CC. I was accepted to the University of Pittsburgh...
  28. PhotonSSBM

    Application or Theoretical Differential Equations?

    There are two courses I can take for a Differential Equations class at my school. One is for Engineering students and is described this way (I'm a physics major fyi): This course presents an introduction to the theory of differential equations from an applied perspective. Topics include linear...
  29. PhotonSSBM

    Is teaching high school too bogged down with administration?

    I want to teach physics and reach out to motivated students with research opportunities in my classes as a career. It seems like every time I tell someone this they comment on how broken the public school system is and that I'd be subject to the parents' whining and whims. They also say the...
  30. PhotonSSBM

    Studying "smart" and hard

    Dr. Courtney mentioned in another thread about studying "smart" and hard when he was getting his 3.8-4.0 GPA as an undergrad. The way he said "smart" peaked my interest and I wish there was more expansion of that in the thread, but it kind of went off the deep end of anti-constructive. So I...
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