What is Topic: Definition and 390 Discussions

The BID 770 was a British-built electronic cryptography device, codenamed TOPIC. It was also used by Canada's foreign service under the codename TENEC. TOPIC was brought into service in 1977, and became obsolete in 1995.
TOPIC was used to protect telegraph traffic, and replaced the earlier mechanical system called ROCKEX. It could be operated in both on- and off-line modes. Weighing 65 lb, the machine used diode–transistor logic instead of single transistors.

View More On Wikipedia.org
Recent contents Top users
  1. Mikaelochi

    B On the topic of neutrinos' masses

    Although I do not have the technical qualifications to understand to mathematics of quantum field theory, I happened to come across a preview of a book called The Electron by Dennis Morris on Amazon. While reading the preview I came across this sentence: "The solution of the neutrino mass...
  2. R

    Other Choice of topic for Masters thesis

    Hi, my supervisor has asked me to decide upon a suitable topic for research work in my thesis-based Masters. I have checked out his recent papers, and I find that I am interested in research topics that he used to work on 6 or 7 years ago, but does not work on anymore. Is it alright to ask him...
  3. FraserAC

    A What Are Advanced Dissertation Topics in Quantum Computing?

    Hi! I'm going on to the masters year of a theoretical physics course and I need some inspiration for my dissertation. Last year I did a one semester long project on quantum computation. (More specifically I discussed the general idea of a qubit, a simple method of realising a qubit using spin...
  4. P

    Help with our research topic: Electrical Conductivity

    my research is about "The effectiveness of different basic substances on the Eletrical conductivity" and i need " significance of the study " 1) who are the beneficiaries and what benefits will they get ?Please help I am a high school student struggling with my research
  5. Samia qureshi

    Suggestion for presentation topic

    I have to prepare a presentation for my workshop kindly suggest me a topic that you think will be more interesting, also for those who are non physicists as their will be non physicists students also:gradcap::gradcap:.:book::book: i think of preparing on "Domains in Ferromagnetic Materials" for...
  6. A

    Topic: Hydraulic Fluids in Aviation

    Hello, We all know that, in Commercial aviation, we use Hyjet (SKydrol or 500B4). and in military we use MIL-H-83282 (red oil). what are the main reasons? MIL-H-83282 has a synthetic hydro carbon base and contains additives to provide the required viscosity and anti wear characteristics, which...
  7. E

    What topic does my Extended Essay idea go under?

    Homework Statement I'm currently trying to decide on a topic for my IB Extended Essay, which is essentially an essay that I'll be doing research for and working on for the next 8 months. Right now, I'm really fascinated by the idea of doing an extended essay on the topic of prosthetics or...
  8. E

    Engineer hopeful- Does my IB Extended Essay topic matter?

    Homework Statement I'm currently trying to decide on a topic for my IB Extended Essay, which is essentially just a long-term essay I'll be working on for the next 8 months or so. The topic of the essay is limited to IB courses I've taken so far, in addition to a few other types of topics that...
  9. Haindi

    Physics Does the topic of undergraduate research matter?

    I have worked with a professor within my Physics department for almost a full school year now on electron scattering simulations. I run some programs on my computer and analyze them with ROOT. This work has been rewarding as I have learned a lot, but I recently got offered a position in a...
  10. andjelatodorovic

    Studying What topic should I write about in physics paper?

    I want to write a paper that includes some inovative experiment results. It's a high school project so many things in physics are unknown for me. What topic whould you recomend(based on what hasn't been fully discovered and yet doesn't include complex knowledge of mathematics)?
  11. alw34

    Is this possible "giant planet' a hot topic in astronomy?

    Downloads are approaching 300,000 so somebody is interested. The 'planet', if it exists, is expected to have an 'appreciably eccentric' orbit. Is there any inventory of how many teams might be searching for this object?? EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM Konstantin...
  12. M

    Undergraduate Senior Physics Research Topic (Theory)

    Hello all, This is most likely a question for those who have experience/knowledge of theoretical/mathematical physics at the graduate level and can provide recommendations following my criteria. Here is some background about me: I am a senior majoring in math and physics at a small...
  13. E

    Is my proposed IB Physics IA topic on solar system orbits complex enough?

    I'm a junior in high school and currently in the IB Diploma Program. I'm getting ready to start working on my SL Physics Internal Assessment. I was wondering if anyone has any guidance on how complex a topic has to be to score well. I was thinking of testing how the mass, velocity, and...
  14. P

    Researching Topics in Art & Humanities: JSTOR, Pubmed & More

    Ive just recently "discovered" pubmed and it is so amazing. I want to know if there is a kind of "pubmed for art humanities" or any other subject for that matter? Or do humanities even publish papers like the science community does? FOr example, where can I read papers on linguistics, or...
  15. K

    Topic for physicasor mathematical project

    Hello, I am a high school student who is supposed to start a project related to physics or mathematics - and I have to hand it in 3-4 months (but it is voluntary) . I am sorry that i haven't used the template, but i hope that someone will help me I haven't decided the topic yet. It doesn't...
  16. C

    Trying to come up with possible topic for physics experiment

    Homework Statement This doesn't follow the homework format very well, but I'm sure if I posted it elsewhere it'd be moved here. I'm looking for possible topics for a physics exploration (with experimentation) that has to be appropriate for a higher level physics student in high school. I'd...
  17. NihalRi

    What topic should I base a non-Euclidean geometry paper on?

    Homework Statement A short paper 12-16 pages I'm also fairly new to this topic Homework EquationsThe Attempt at a Solution I tried to ecplain it's application using the Robertson walker mrttuc but it ended upmlooking too much like a physics psper:/
  18. J

    Topic to talk in math's fair

    Homework Statement Which problem do you recommend us to talk in a science fair? Homework Equations no The Attempt at a Solution We have thought about paradoxes but our teacher told us that each person has a different point of view of something like the grand hotel paradox and we need to do...
  19. englevakten

    Revisiting topic: Using 230V 50Hz Euro Appliances in the US

    << The Mentors and experienced PF users are keeping an eye on this thread for NEC and UL compliance. Please use the Report link in any post that looks problematic >> I am moving the US from Norway, Europe. I want to build a "go green" house, but keep some luxuries. I have a lot of very...
  20. Z

    Racing topic - Adding weight requires more or less KE?

    In a race car, coming off a slow turn and going into a long straight approaching a slow turn. if two identically powered cars (say 400hp at the rear tires but one at 3000lbs and the other at 3500lbs) are racing, would one car require more capable brakes than the other? I subscribe to the laws...
  21. loops496

    Advice on choosing a Monograph topic

    Hello everyone, I'm a senior undergraduate and I'm planing to do a Monograph related to Quantum effects in Gravity (Hawking radiation or something similar(?)) or even some QFT in curved space-time (maybe ambitious since I know this is VERY HARD and I don't have much time), the thing is I can't...
  22. P

    Suggestion of a topic for a Statistical Mechanics project

    Hi friends, I have to do a semester project (analytic, computational, or both) for my second course in Statistical Physics - a graduate level course with great emphasis on phase transitions. It will be graded just 15% of the final grade (so, it is not necessary to elaborate exhaustively) and it...
  23. Kimpoy

    Interesting undergraduate thesis topic for Physics education

    Hello everyone, I am a Physics education major in the Philippines.I am now on the stage of doing an undergraduate thesis as a requirement for my degree. I would like to ask for suggestion out there, for an interesting topic to be considered. I would really appreciate topics that gives a little...
  24. I

    Master Thesis Topic: GR & Statistical Mechanics

    Hello! I am a master student, and I am about to start working on my master thesis, which, in my counrty, is a substantial work of 6 months which usually involves original research. I will be supervised by two professors of Statistical Mechanics, who have many research interest. In these days...
  25. R

    How frequency domain topic should be taught in the academic course?

    This is a soft question but I think it's a real fact.The Frequency domain has made revolution in the field of Mathematics,Physics,Digital Signal and image Processing etc. Some of concepts which are very difficult to analyse in spatial or time domain can be very easily understood in the frequency...
  26. P

    Doing a PhD in the same topic as masters?

    I have the choice between doing a PhD in a topic which is very similar to my masters or starting on something slightly different, I find the topic very interesting at the moment but after doing something for one year already do you think it is a bad idea to do the same thing for another 3/4...
  27. laramman2

    Senior Thesis Topic in Neurophysics

    Can anyone suggest any interesting problems relating a neuron model with nonlinear phenomena (or nonlinearity of the neurons itself)? And also which spiking neuron model is computationally simple yet able to produce firing patterns close to a real biological neuron?
  28. Brian T

    Senior Thesis Topic: Astrophysics & Relativity

    Hello all! I plan on doing a senior thesis in order to graduate with Honor's in Physics (Specialization Astrophysics). Although I'm only in my second year, I wish to begin research to be better prepared for when I actually pair with an adviser for directed study and thesis writing. I plan on...
  29. S

    Clarification on a topic in Apostol's calculus text

    Hi all, I am a newbie and this is my first post in PF. I have recently started on learning calculus and I'm using Apostol's calculus-I (second edition). I need some clarification on "The method of exhaustion for the area of a parabolic segment" (I 1.3 page 3). I'm able to follow the author till...
  30. N

    Helping creating a few good topic sentences

    I know this is mainly a site for scientific discourse. But anyone good at writing English herer? I have this paper coming up and my teacher is extremely specific about word choice, tense(s), "to be" verbs and more of those types of things. So my topic of the paper "Geothermal energy" I must...
  31. Entanglement

    Physics Quantum Biology: Exploring the Hot Research Topic

    How hot is Quantum Biology these days? Is there much research being done on this subject ?
  32. kini.Amith

    A reasonable topic for a write-up in theoretical physics

    I was recently shortlisted for interview ( for integrated Ph.D. in Theoretical physics) at a research university in India. As a part of the admission procedure I am supposed to give "A write-up of 200-250 words describing your interest in your most preferred field of study. The write-up should...
  33. P

    How can you know when you truly understand certain topic?

    Ok, talking about university physics. Usually what you can see in class of any certain topic is not everything there is to know (they are far more deep). My auto-test for knowing if I got it (after acing the exams, of course ;) ) is this: Can I rewrite the theory? When I am able to develop the...
  34. V

    Can Musculoskeletal Modelling Improve Existing Bio-mechanics Projects?

    Hi everyone, I need to do a project on bio-mechanics topic which has to be submitted within 2 months. I have no idea about the project because i didn't get any background on that. My professor suggested me to do some literature surveys on any existing project and try to improve it. If i...
  35. M

    Help finding a topic in Number Theory

    First, I'm in need of a topic to write a paper about as part of my degree requirements. The paper is supposed to be 10-15 pages. (I only mention this because it limits the scope of the paper and thus the topic.) I took a course in number theory last semester and really enjoyed it, so I'm really...
  36. R

    Proof for Limit Topic Formula: e^[g(x)[f(x)-1]]

    This is a basic formula but can't find any proof of it. If anyone can explain or give a link showing proof it would be helpful. ## \lim_{x\rightarrow a} f(x)^{g(x)} ## = ##e^{\lim_{x\rightarrow a} g(x)[f(x)-1]}## What is the proof for it?
  37. B

    Laws of Motion topic -- Car being decelerated by a headwind

    Homework Statement A car with mass 2500 kilograms travels along a straight level road at 90 km/h. A headwind begins to blow with a force of 200 N causing the car to slow down. Calculate the car’s deceleration. Homework Equations The book uses the formula F =ma so 3. Book's solution = 0.08...
  38. PrincessIceFall

    Metacentric height : Mechanical Engineering thesis topic

    Homework Statement So I am currently in my final year working on my thesis. Below is the details of my thesis topic: Metacentric height (Computational) It is a simple matter to determine whether a body will float in a liquid, it is not so easy to determine the orientation at which the body...
  39. Alxb577

    Electromagnetics Essay Topic Ideas

    Hi Everyone, I need to write an essay for my electromagnetism class and i was wondering if anyone has good topic ideas. My criteria is that it needs to be 10 pages and I would like something that is interesting for me to research and write about. I was thinking so far of magnetic levitation...
  40. O

    Physics help? Topic: kinetic energy?

    A block of mass 10 kg is pulled 5 m upwards along a rough surface at an angle of 20 deg, an external force of 100 N and vi = 1.5 m/s. The coefficient of friction is 0.4. Calculate: 1) The work done by gravity 2) The increase in internal energy between the block and the surface as a result of...
  41. Y

    Need helps for my final year project topic

    I am an electronic and comm. engineering student, I have trouble in choosing my final year project topic. At first, I decided to build an passward/face recognition based Android app for wireless door lock/unlock system. However, this idea was banned by my supervisor because of lack of...
  42. S

    Choosing topic for reserach and presentation

    Hi, I am a final year undergraduate student having to do a presentation for a course in 'Advanced Quantum Mechanics.' Our lecturer offered the following topics. I have to pick one of these. 1. Born-Oppenheimer Approximation → Berry Phase 2. Non-Hermitian Quantum Mechanics 3. Path...
  43. M

    Admissions Will a poor undergraduate research topic affect graduate admission?

    I have a graduate admissions question for anyone who might have been part of a graduate admissions committee. How do you view undergraduate research projects that are not cutting edge or particularly interesting? My project is on the effect of ball milling on production of a bulk high-Tc...
  44. S

    EE Topic: Relation between Temperature and Natural Frequency of an obj

    Hi guys, I am still new to this forum, so I hope I can learn many things from this forum :) I am currently looking for my IB EE topic about the relation between temperature and natural frequency on an object. I have been researching about this topic, however I don't find any specific...
  45. R

    Thesis topic in wireless power transmission

    Hi all I'm an electrical engineering student currently looking for a thesis topic. I did a project previously in wireless power transmission based on inductive resonance coupling with different designs for the transmitter and receiver. I'm very interested in this topic, mainly wireless power...
  46. gracepentinio

    Thesis Topic Ideas for Mechanical Engineering Students

    Greetings! I am a Mechanical Engineering student and I am on my last year in this course. I am currently working on my thesis and beginning with a topic is really hard. I hope anyone from this forum might help me have a good thesis idea that will give me a head-start. I will really appreciate...
  47. A

    What topic is "conditional structures" under?

    So i have a book that covers the fundamentals one needs to know before starting C++. I'm self teaching myself so i don't have to take the intro programming class at school. Anyways, our professor sent us all a email that among a few other other topics (such as arrays and functions and loops), we...
  48. C

    Research topic for dual energy x ray absorbtiometry (dexa)

    Can someone please provide me with some research topic ideas for dexa?
  49. G

    Schools What does this essay topic exactly mean? (university application)

    I'm applying for Pusan National University (Busan, South Korea) undergraduate admissions and Physics is my choice of major the question they ask is: Please describe how much have you learned about your intended major? do they want to know my previous experience about learning Physics...
  50. W

    Please help me refine a dissertation topic in mathematical logic

    I'm looking to write a dissertation in the field of logic (for a philosophy degree). I'm deeply interested in logic, but whenever I consider the material beyond my courses it becomes pretty daunting. I'm reasonably familiar with: *First Order Logic *Set Theory and ZFC *Cantor's Diagonal...
Back
Top