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.

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  1. M

    Need help with a thesis topic withing electric power distribution. Please help

    Hello guys, Please I need help in getting ideas for my masters thesis, I am a electrical (electric power distribution) engineering student and I have been searching for a long time with no good results, if anyone has links or good ideas please help me. My latest idea was the impacts of plug-in...
  2. S

    Overview of the topic and current topics/unsolved problems

    Hi Was just wondering if anybody knows of a book (or a website) summarizing the general relativity story from Einstein's days to current topics and research areas. I'll be hopefully doing my MSc in physics, but am not sure about choosing the general relativity modules. I need to have some...
  3. J

    Grad/Undergrad Texts: Any Topic

    The following websites offer thousands of free textbooks and course lecture notes, downloadable in pdf and other formats, searchable by topic, spanning sciences and mathematics of all types, levels, and branches. http://www.techbooksforfree.com/science.shtml"...
  4. R

    Should You Choose a PhD Topic That Could Be Disproven Experimentally?

    How wise is it to make your Ph.D. topic on something that can be disproven experimentally maybe in a year or two? I tried to make this question as general as possible, so that it can apply to others who have the same question. Specifically, if I do some calculations or theoretical work in...
  5. D

    Which topic to pick for physics coursework?

    Which topic to pick for physics coursework??!? For our physics coursework we can choose any topic around physics to talk about and I am stuck on which one to do. A good topic will be one that I can link many other aspects of physics to it, for example quantum or something else. Previous done...
  6. C

    New topic about Complex Network.

    New topic about Complex Network. Is there Anyone interested in this filed?
  7. G

    Mexican hat potential around spin site (TOPIC: spin models)

    I am not sure if I am reading well the following article about KT phase transition in spin systems. http://www.itp.uzh.ch/~llucas/projects/proseminar.pdf Page 5 quotes a theory regarding the Helmholtz free energy function. The curve surrounding a spin site or an atom looks like everyone's best...
  8. R

    Final Project Presentation Topic?

    Hey, I'm a high school student interested in persuing Physics in college. I just took my AP Physics exam, and I think it went well =]. I realize this isn't a specific homework question, but because it pertains to my AP Physics class I thought it would be appropriate here. Because we took...
  9. I

    Finding an Advanced Math Topic for AP Calculus AB Project

    This is a bit different kind of help that I need compared to most other threads in this forum. I was not sure of where exactly to post this. But, since it is pretty much homework, and it's for my AP Calculus AB course, I thought this would be an appropriate place to put this thread. If not...
  10. P

    Essay Topic Ideas on Physics: Limited Resources

    hello physics forums! it is my first time here so please excuse me for any mistakes :) i have to write a 4000 word physics essay and i wanted to write an experimental one, something preferably related to aerodynamics (since it is my topic of interest) does anyone have any ideas of specific...
  11. B

    I got a topic to research Recommended preparatory reading?

    I got a topic to research! Recommended preparatory reading? I have been invited to write a proposal for researching this: >> The basic idea is to calculate, in first approximation, the effect of electron-positron pairs on the quantum state of a photon. You will need to study some...
  12. C

    If a mod sees this, please delete the topic; I posted it in the wrong section.

    Homework Statement The differential equation that models the volume of a raindrop is \frac{dy}{dt} = kv^{2/3} where k = 3^{2/3}(4 \pi)^{1/3} A) Why doesn't this equation satisfy the hypothesis of the Uniqueness Theroem? B) Give a physical interpertation of the fact that solution to this...
  13. D

    Interesting topic for technical presentation?

    Hi all, I have a presentation for my engineering-based public speaking class coming up. It must be technical in nature. I can't decide what would be easy enough for me to learn about while keeping it at a technical level and still interesting to my peers. I've been thinking about: A...
  14. K

    What are some potential research topics in optics for a masters degree?

    Hi, I graduated in Telecommunications but I was more keen on programming/software related areas so worked as a Software Engineer for 2 years. To pursue my masters I reached out to a professor and submitted a proposal related to an image processing frame work. I was accepted but when I...
  15. P

    Physics Extended Essay Topic Question

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  16. R

    Wat is the exciting topic in math to learn?

    wat is the exciting topic in math to learn..?
  17. S

    Need Help Getting Ideas For an Undergraduate Thesis Topic

    Hello guys, Please I need help in getting ideas for my undergraduate thesis, I am a mechanical engineering student and I have been searching for a long time with no good results, if anyone has links or good ideas please help me. Thank you.
  18. B

    LaTeX LaTeX (hope no off topic here)

    Dear Sir or Madam I'm a novice here thus I'm probably going to ask a silly question (in a bad English, moreover). Please, can you explain the reason why I can't get the mathematical notation ( \alpha , as an example) displayed clicking on "Preview post" button ? I have been looking...
  19. K

    How To Choose a Topic for Research project

    Hello, Am a student in 3rd year of Applied physics and next year am supposed to present my research project so i would like to ask how does one choose a topic.
  20. X

    How Can I Create a Non-Fire Flash Bang for Street Magic Tricks?

    Hej i have seached the web thin... without reslut so I hope that you smart people can help me :D I want to make a little flash bang for my amature street magic tricks, that I want to give a little extra effect :D I have found a lot of places where people shows how to make them. But my...
  21. D

    Need a topic for paper in modern physics

    I am writing a paper on a "modern" modern physics experiment and need some help on finding a subject to write about. Any help on finding a topic would be greatly appreciated. Thank you in advance.
  22. D

    Need a topic for paper in modern physics

    I am writing a paper on a "modern" modern physics experiment and need some help on finding a subject to write about. Any help on finding a topic would be greatly appreciated. Thank you in advance.
  23. A

    What is the Best Topic for a Scientific Review in Electronic Materials Science?

    Hello, Dear all, I will be writing a scientific "review" on a topic relating to electronic materials science. I have some candidates and open to suggestions, Please help me pick a promising topic which doesn't require diving in deep to be understood. My candidates are: - Photovoltaic Solar...
  24. L

    Help Topic for AS coursework (sensors)

    I'm studying AS Physics, and we're doing the sensors project for our coursework. WE can use LDRs, Thermistor, rotary sensor and a variable resistor (length). I have to think of a context to the measurements, and our teacher wants it to be witty and original, but have no ideas! Examples of...
  25. D

    Noob topic, midterm this Tuesday.

    This Tuesday, I am going to walk into my class and take the first test this semester, which also happens to be my midterm. I'm taking Physics 204 - Mechanics and it's pretty much kicking my butt ha ha. The teacher has told us that a "cheat sheet" will be allowed STRICTLY for equations...
  26. Topher925

    How does your thesis topic affect your desired fields of work?

    I'm going to be choosing the topic of my masters thesis rather soon which will lay a lot of the ground work for my PhD. But I am wondering how general should I make my thesis with respect to other engineering areas. I'm looking to go specifically into energy and heat transfer of...
  27. O

    Topic that involves physics, chemistry and biology?

    Does anyone know about the IB Diploma course? We're supposed to make a project or investigation and analyze the physics, chemistry and biology aspect of it... the theme of the project is 'Go Green' and it can be literal (do things involving green things, paint green stuff)... I'm confused of...
  28. K

    Medical Circumcision & Bad Habits (warning: sensitive topic and/or graphic)

    I have no where else to go to, and posting anonymously on a public computer seems to be my best bet because I have lurked these forums for a while and believe most members here are intelligent enough to provide an objective answer. As I've already stated, this issue may be sensitive to some...
  29. madmike159

    Unraveling the Mystery of [Topic]: Implications of [Effect]

    After doing some research on the subject I have managed to work out roughly how it works. What I havn't been able to find out is what it does. Were there any implications from this effect? Did it lead to disproving or proving a theory? Any help would be very usful.
  30. G

    Hydrochloric acid as 7th highest searched topic on Yahoo

    Hmm... I wonder why. http://www.yahoo.com/
  31. F

    IP topic is badly needed here.

    i really need IP topics which don't need more money and can be worked for a short time. im a 4th year student. Thks.
  32. O

    Discrete Probability and Distribution to understand the topic.

    I'm currently studying this topic at school... I'm a 12th grader. So I just want to ask, does anyone know how to comprehend the topic in an easier way? or probably anyone know a guide somewhere in the net? I am just confused at binomial distribution, and poisson. I understand a little bit...
  33. C

    Help with Topic on Causality and Speical relativity

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  34. K

    Oscillation question - vibration topic

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  35. F

    Can the Rubik's Cube be Solved in a Disco?

    Hi guys. I need help coming up with a topic for my year 11 physics speech which goes for 5 min. I decided to ask here cause my teacher marks hard so i need some good topics. The question i have choosen talk about is "Is it possible to solve a rubiks cube in a disco?". If anyone can suggest...
  36. G

    What are some online resources for technical seminars in EE and communications?

    hi i am an engineering student in electronics. i want to take tecnical seminar. can i know the latest technology and the website in which it could be available..
  37. P

    Programs Prospective PHD students: What to look for in a supervisor and topic?

    I have undergraduate degrees in Physics and Mechanical Engineering. I'm pretty bored by my work as a systems integration engineer and am strongly considering doing a phd in plasma physics. I've been told that the quality of my supervisor, his/her contacts and the amount of funding they can...
  38. B

    Help on Thesis Topic: Applied Physics, Programming & Experiments

    help on thesis topic! please, please.. help me find a topic for my thesis.. particularly, I'm interested in applied physics topics, programming or experimental set-up will do.. any suggestions?..
  39. S

    Linear Algebra - Topic: Basis & Subspaces

    I have a few questions here, my main problem is not understanding the notations used, hence not understanding the questions. Homework Statement 1. Do the vectors j_{1}= (1,0,-1,2) and j_{2}= (0,1,1,2) form a basis for the space W = {(a,b,c,d) l a - b + c = 0, -2a - 2b + d =0} ? 2...
  40. K

    Grade 12 Assignment/EEI Topic help

    Homework Statement Hi everyone, This is the first time I have posted here so please be nice! I am looking for a topic for my year 12 physics EEI (extended experimental investigation), where we have to chose ANYTHING, test it (quantative data needed), generate rules (potentially linking the...
  41. K

    Testing SAT Writing: Can the Past Influence the Present?

    hi, i had my SAT exam today. The topic was: Can the past influence the present? there was an example i included in the essay, which now I'm feeling unsure about. I talked about the holocaust (past event) and the recent apology of Angela Merkel to the jews (present). and i also talked about...
  42. T

    Topic about masses (modern physics)

    Homework Statement If a system is composed of n particles that are freely moving is M(system)=M(total masses of particles)(sum) Homework Equations The Attempt at a Solution of course no , but these particles isn't photons or electrons my doctor didnt exacly told me what are they...
  43. K

    I need a topic to discuss

    As my final project in particle phys. I just have to give a talk and I need some ideas. I'm thinking either Strange-Star quark/gluon plasma properties and what's new in the field, or a quick overview of Lattice QCD, how it was started and what problems it assists in solving. Any other...
  44. J

    Help with topic for 10 page paper

    Ok, my physics teacher has a assigned a 10 page paper to be completed by the end of the year. this is my senior year just for refrence. I would like to pick a topic in the Aerospace engineering field, and who better than u guys to help me find a good topic to do my project on. Here are my...
  45. P

    E&M in a Curved Space-Time: Find Books & Papers Here

    SR can be used to describe E&M in a local inertial frame, can anyone tell me a book or paper, that describes E&M in a curved space-time? Thank you in advanced
  46. P

    Need Help Choosing A Topic To Write A Physics Paper On

    I'm in undergraduate physics 2 and I'm looking for an interesting (but not too broad) topic to write an 8-10 page paper on. I've considered color vision & color blindness, lasers, quantum theory, etc. What would be a good topic to write on? Thanks.
  47. K

    Why Does Resistance Increase with Temperature in Conductors?

    currently we have been studying mechanic physics and the teacher though that it would be fun to do a fun electricity related lab. the lab was to investigate the voltage across a copper resistor and a superconductor when the temperature is brought down with liquid nitrogen. my question is why...
  48. D

    Research Topic in Graph Theory or Non-Well-Founded Set Theory

    I'm doing to come up with a subject in either of them to do either an "independent study" or "project" on, the former is a course which simply requires you to learn the subject and the latter is "independent study" + a x-page paper. Unfortunately I don't know either subject too well so I can't...
  49. N

    Understanding Fields: How Can They Be Represented and Applied?

    I've been wanting to catch back up on my physics and math. I was looking into equations on E&M, which led me to electric fields, which led me through differentiation, and on. I am looking up on Wikipedia what a mathematical field is. Well, it's an algebraic structure. It's also a ring. A ring...
  50. D

    Undergrad Project Topic: Graph Theory, Combinatorics & Complexity

    I'm in my last year as an undergrad (hopefully) and I'm looking for a subject to do an "honours project" on. I actually have no ideas, but maybe someone can suggest a topic in graph theory, combinatorics or complexity?
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