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. B

    This might be off topic but i with this math problem

    Die A has four 9's and two 0's on its faces. Die B has four 3's and two 11's on its faces. when either of these dice is rolled, each face has an equal chance of landng on top. two players are going to play a game. the first player selects a die and rolls it. the second player rolls the remaining...
  2. J

    Can You Make Yourself Dream? - Josh's Question

    After recovering from Strep the last few days, I got some time to just sit down and read. I read Sigmund Freud's The Interpretation of Drems. Now for the most part, this book had all the answers to my questions...but one. Is it possible to make yourself dream? (without the hypnotic stuff)...
  3. I

    What Are Some Innovative Topics for a Classical Mechanics Term Project?

    Does anybody know a good topic for a classical mechanics term project. I just don't have any ideas. It can just be a high degree of problem solving for a traditional trivial question or be a Phenomenon.
  4. E

    Special relativity assignment topic help

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  5. I

    Possible IB extended essay topic

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  6. C

    Understanding Light Propagation for Quantum Field Theory

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  7. J

    Dreams: Life Beyond Parents for Raised-Solo Kids

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  8. A

    Catchy Caption for the topic Adolescence and Indian Lifestyles

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  9. J

    Can anyone suggest a thesis topic on semiconductor physics?

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  10. S

    Physics investigatory project topic

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  11. H

    Selecting a Recent Space/Astro Physics Research Topic

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  12. E

    Nuclear energy hot topic once again $7 billlion seriously?

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  13. P

    UG research Advisor wants me to come up with my own topic

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  14. P

    Building insight on a particular topic

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  15. M

    Expert Assistance for Choosing a Microelectronics Thesis Topic | Brian's Guide

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  16. S

    How to Choose the Best Computational Physics Project as an Undergrad?

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  17. humanino

    Is MSSM Higgs the Key to Understanding the Universe?

    Good morning everbody, very good indeed. Well, tell me what you think : http://dorigo.wordpress.com/2007/01/19/a-21-sigma-eccess-of-mssm-higgs
  18. C

    What Are the Connections Between Euclidean and Non-Euclidean Geometry?

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  19. drphysica

    Hey guys I have an interesting topic for all of you who interested

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  20. D

    Essay Topic Selection for 2nd Year Undergraduate Physics Students

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  21. B

    Where Can I Find Past Papers for Edexcel Nuffield AS Level Physics?

    Hi. For AS level I am doing physics (Edexcel Nuffield board) and i was hoping if someone is able to direct me to a site which might provide me some of the past paper of tht board as i was not able to find any. thankyou :)
  22. A

    Environmental Physics Essay Ideas - Unique & Interesting

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  23. P

    What are the tension forces and angles in this stationary equilibrium setup?

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  24. Q

    Finding a Topic for I.S.U Research Paper: Electromagnetism

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  25. B

    Topic of Paper - What should it be?

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  26. E

    2nd year presentation topic needed

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  27. S

    My topic full of GRE practice questions, whoo

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  28. M

    News Will North Korea and the US both get what they want?

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  29. L

    What is the role of optimization in commercial aircraft scheduling?

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  30. D

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  31. Simfish

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  32. I

    Need help finding a suitable physics topic for a project

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  33. D

    How Can I Create a Unique Physics Experiment for My Summer Project?

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  34. S

    Why are Physicists Important in Understanding the Concept of Democracy?

    Of course, this isn't a place for such issues (that topic of mine ('Physicists')); but, here, I just want to point-out that a chance to reply was refused to me (the topic is locked without my constructive answer).
  35. J

    What will the hot topics in maths be in the future?

    What do you think the hot topics in maths will be in the future? I can only speak from an applied point of view, but perhaps someone else could come in from the pure angle... In the 90s, I think the hot topic was ''Chaos Theory'' ( http://en.wikipedia.org/wiki/Chaos_theory ) - even banded...
  36. N

    What's the hottest topic in physics?

    Well, it's certainly not string theory! http://physicsweb.org/articles/news/10/5/4/1
  37. A

    Need help with a topic discussed in class

    we were given this topic about soft drinks. The question is: Ideally, soft drinks are bottled under high pressures and are stored in a refrigerator in a closed container. Explain why these conditions ensure the best (i.e. least flat) beverage. Write an equilbrium equation in your answer...
  38. O

    Help IB Student Find Physics Research Topic

    i am an IB student. recently i need to find a topic for my physics research. yet i couldn't find an interesting topic. i hope to find a simple yet interesting topic. one that have lots of physics behind it. help me..anyone.
  39. H

    History Do you think it's good to write basic history of the topic you're writing on?

    Hello, Many of you have written scientific papers and here's my question: Do you think it is good to write some history about the topic you're writing on? For example, let's say I'm writing a paper on gravitational force and I added in intro a little history of brilliant discovery by Newton...
  40. Nebula

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  41. E

    Topic Error after switch form AOL to Bellsouth/AOL

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  42. Moonbear

    Medical M&B Inaugural Journal Club Topic

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  43. M

    Topic for a 4000 word essay

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  44. J

    Computer Modeling Project Topic (Help, please)

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  45. K

    My teacher hasnt been in and Im trying to self teach this topic. Can

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  46. Pengwuino

    History Topic for term paper: Important figure in pre-CW American history

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  47. exequor

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  48. R

    News Side Topic for Great Depression Thread

    Side Topic for "Great Depression" Thread The demand for oil is also on the rise though. As vast as these reserves may be, all that does is buy us a little more time to figure out alternatives/fight over it. It will still run out eventually.
  49. Q

    Suitable experiment for 16-year-olds? Topic: Light

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  50. R

    Potential of Camber Variation in Airfoils for Improved Efficiency

    Hey everyone, I'm getting ready to start my IB Extended Essay in Physics, and sent a proposal to my supervisor for a study on the performance of various solid rocket engines. Unfortunately this topic was rejected because a) it involves highly explosive and flammable materials, b) apparently...
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