Path Definition and 1000 Threads

If I had a photon with 450nm wavelength, purple. Could I change it to become a radio wave? without it going in another direction or anything.

So I am a pretty normal grade 11 kid, I have good grades (92.5% average and all level 1 courses), I'm a natural at maths and physics and I'm already weeks ahead of my physics class. My true talent is probably with computers, I taught myself a bunch of languages, like Python, Java ... I'm...

What are the definitions of source difference, path difference and reflection difference. Thanks!

Homework Statement 15MeV electrons, enter magnetic field with strength of 0.7T. What is the radius of the path of the electrons? What energies could the electrons have and be confined to orbits with radii within 5% of the 15MeV electrons? Homework Equations E =...

Hi I am trying to figure out MATLAB control system stuff a little more, what would be the best way to go about in 2d having a point with all the equations of motion inputed for direction and distance try to follow a set path like 10 ft forward from (0,0) and turning 90 degrees right and going...

Homework Statement The problem statement is a) to find expression for the position, velocity, and acceleration vectors, and to describe the path of the object in an xy plot. The coordinates of object moving in the xy plane vary with time according to the equations: x = - 5.00m sin(wt), w is a...

Displacment and path lenght... Is path length the same as displacement?

I'm in my 3rd year of a chemistry course but I have more of a passion for computers and technology than chemistry. I didn't know the difference between science and engineering before choosing this course but I've come to the conclusion that engineering is more the practical side of things...

Is it true that in first quantization the PI includes the possible trajectories a particle can take, but it does not include how particles can change into other kinds of particles (electrons to photons, etc). And QFT (second quantization) calculates how particles can branch off into other...

what is the path of Earth in 4-d space?? as i read in the brief history of time "let a plane be moving straight in 3-d world but we see it in a curved path on a 2-d Earth surface (mountain). can any1 tell how can we see the space curve as 2-d has not elevation?? moreover i used to think that...

Hello, I tried to read Feynman's book: Quantum Mechanics and Path Integrals but it is so difficult. Is it a really important book if you want to learn Quantum Mechanics? If so what should I do in preparation to read it? Thanks

It is frequently stated that path integral formulation of quantum mechanics is equivalent to the more traditional canonical quantization. However, I don't think it is really true. I claim that, unlike canonical quantization, path integral quantization is not self-sufficient. That's because...

Hi all, I wondered if you guys could help me with this question. I have been showed a picture of a lightning. It is not the complete lightning on that picture, maybe 1-2 thirds of it. To me it looked a little blurry, so I asked if the photographer had used a tripod to make sure the camera...

Hello, What are phase difference and path difference? Can you give me a simple explanation so that I could imagine It would be great if there are some illustrations Thanks

I imagine differential equations and statistics are used. What type of math is used to predict the path of hurricanes?

Question : A balloon tied to a thread whose other end is fixed to the bottom of a beaker is held such that the string is horizontal. The path traced by the balloon if it is released is ? Answer : The path is along the arc of a circle Please explain why the path will be along the arc of a...

As of right now I'm a rising sophomore, math and physics double major. It's hard to say whether I'm going to be pursuing a PhD in one of these disciplines or whether I'll be switching to something more employable later, as I haven't had many upper division classes. I do, however, strongly...

"Virtual particle" in path integral and perturbative approaches The term "virtual particle" is used in path integral and perturbative approaches. How do these "virtual particles" differ and how are they related? [For example, static, bound states such as the hydrogen atom are solvable by...

So I was wondering that what difference can having a master's degree in engineering (let's take my own field, mechanical engineering) will make than if I worked straight away with a bachelor's degree? What sort of positions within organizations do MEs with MS hold and what job usually the end up...

Hello, I am currently in engineering (Electrical Eng), but i already have issues with which stream i should focus on, right now these are my interests are: digital electronics, software/hardware,energy system:control, and energy system:high power. As anyone i want to secure a decent job and...

Homework Statement A 5.6 MeV (kinetic energy) proton enters a 0.18 T field, in a plane perpendicular to the field. What is the radius of its path? Homework Equations kinetic energy: KE = 1/2 mv^2 velocity: v = sqrt(2KE / m) radius: r = mV/qB The Attempt at a Solution KE = 5.6...

Ok so here is my problem. I recently graduated from UCSB doing mathematical finance (not too great gpa 3.2). The thing is, during my second year or so I got really interested in physics and disillusioned with my major. I didn't do anything about it because I thought I was too late into my...

Wondering if anyone can help me with this. Trying to find out what path electrical current takes when it passes from one hand to the other on its way to earth. I know it goes up the arm, across the chest and then down the other arm and out the hand to Earth through whatever earthed object...

velocity of proton following a helical path?? need a bit of help Homework Statement A proton with an initial velocity given by (4.0 + 3.0 + 3.0)(105 m/s) enters a magnetic field given by (0.62 T). Describe the motion of the proton. The proton will follow a helical path with a velocity of...

I'm not getting the answer from the back of the book for some reason. Is the book wrong or am I wrong? Homework Statement calculate \intf · dr for the given vector field f(x, y) and curve C: f(x, y) = (x^2 + y^2) i; C : x = 2 + cos t, y = sin t, 0 ≤ t ≤ 2πHomework Equations itex]\int[/itex]f ·...

Hi, I'm currently going into my second year of university as a math major and I am strongly considering becoming an actuary. I really enjoy math and physics, so I'm minoring in physics at the moment, though that may have to change for more business courses. I would therefore love a job that...

I am currently a college student and am very interested in becoming a cryobiologist someday. Particularly, I would like to work on organ preservation or something similar. I just have a few questions regarding what path I should take to get there. Any advice by scientists working in this field...

I'm not sure what guidance may be offered but I wanted to get some advice from professionals in the field of astronautics. I moved after high school and am finally in a position to follow my goals in education. I'm 27 years old with a semester of undergrad completed. I have always had an...

Hi everyone! I can't figure out why electromagnetism is defined a non integrable phase factor (or path dependent), referring to the element of the Lie group U1 to which it (the phase factor) belongs. Why it's said to be non-integrable? And, precisely, how do we specify a path for the...

Hello all. I'm a recently graduated high school student entering a liberal arts university. Right now, my intention is to major in physics. But I'm concerned about several things: First, I'm concerned about whether there are any career opportunities for a physics b.s. I've heard that physicists...

hello I started to read ‘QFT in a Nutshell’ by A. Zee. In the introduction to the path integral formulation of quantum mechanics there is the story about a particle going through a series of screens with holes drilled through them. Then the number of holes in each screen is increased. This...

Hi guys. This will be my first post. After reading through some of the threads here, I decided to look through recommendations for beginning physics books, which led me to Isaac Asimov's https://www.amazon.com/dp/0880292512/?tag=pfamazon01-20. Asimov writes with such conciseness and clarity...

Thread is resolved...

Wow this forum has really helped me A lot. Currently I'am a junior in High School and my interests lie in physics, currently taking Advanced. I have been thinking about pushing for astronautical engineering but also thinking of mechanical just because of the range of potential careers. What I...

Where does the k in the following example come from and why is it the same in both equations? This is an example from my textbook [SIZE="1"](pg 937, Calculus, 8th, Larson, Hostetler Edwards). After they set the particle's path's derivative equal to the temperature function's gradient (in large...

Hey guys, can anyone suggest good learning materials (books, lectures, pdfs...) for the path integral formulation of QM? I don't need anything too advanced, just a thorough intro. Are Feynman's books any good? EDIT: Oh yeah, some quantum thermodynamics too in the mix would be cool.

I was doing a past paper earlier and i got a question about cold spots in microwaves and i needed to calculate path difference the question was: ---------|------->S<---------|--------- Explain why a cold spot is formed at S 18cm | 6cm. 12cm | 30cm The question showed the...

EDIT: fixed TeX issues Hi, I'm learning about the correspondence in string theory between the geometry of Calabi-Yau manifolds and melting crystals. I care more about the math and know almost nothing about string theory, so navigating the literature littered with so much string theory jargon...

Homework Statement please suggest a suitable shortest path finding algorithm of an autonomous device in the maze more popularly referred to as a micro-mouse. Homework Equations In the development stage we have understood that simply applying djikstras would not work. Therefore we need a...

Reading just enough to be dangerous concerning Riemann geometry, choices of geometry regarding the shape of the Universe, etc., and the geodesic mappings to different geometric models (flat, spherical, and hyperbolic), I have an unanswered question in my mind. Acknowledging the affect of large...

hello folks... my frnds and I have a project in which we have to find the shortest path possible for a mouse to traverse to the middle of the maze(any random maze)...we have understood that simply applying djikstra`s would not work...also prevalent algorithms like floodfill have a level of...

Homework Statement Okay I am given a vector field (which is irrelevant to my question) and a bounded surface. S is part of the cone y^2 = x^2 + z^2 that lies between the planes y = 0 and y = 3, oriented in the direction of the positive y-axis. The Attempt at a Solution My book...

Homework Statement Transform to polar coordinates and evaluate... \int^{a/\sqrt{2}}_{0} dx\int^{\sqrt{a^2-x^2}}_{x}\sqrt{x^2 + y^2}dy Homework Equations x^2 + y^2 = r^2 x = r cos \theta y = r sin \theta I've been struggling to make sense of this problem, it should be easy, I'm...

I'm starting my junior year in the fall, and I'm starting to think about what I really want to do with my physics degree once I earn it. To me, it seems like alternative energy is a good direction to go, because it's a very real problem in the modern world and I feel like there's going to be a...

Hello. I have just read a mean free path (a distance) written in units g/cm^2. How do you interpret this unit in terms of the usual idea of the mean free path as a distance?

Hello, I am going to make you think I am crazy with the very notion of can he do it. I am 37. I have been many things but not what I would like to be. I have always wanted to be a particle physicist. I am in my first year of returning to college after some things. can someone point me in...

What's the math behind what you see in the picture.. Thanks for reading/replies

Hello all, Despite a lot of family discouragement, this fall I am going to choose a major in aerospace engineering. Its been a lifelong dream of mine to someday have a career that has to do with the designing of air/space crafts. It started with my curiosity in astronomy, then as a I grew...

I always have a feeling of apprehension posting on the Quantum Physics subforum, because I haven't done any of the math for it However, a friend recently told men (I think he read it in the Elegant Universe) that if you shine a flashlight on a wall or something, photon takes every possible...

Homework Statement Show that the line integral is path independent and evaluate the integral \int_C tan(y) dx + x sec^2 (y) dy The Attempt at a Solution \frac{\partial }{\partial x}(tan(y)) = 0 \neq 2xsec^2(y)tan(y) = x\frac{\partial }{\partial y}(sec^2(y))