What is Lecture: Definition and 169 Discussions

A lecture (from the French lecture, meaning reading) is an oral presentation intended to present information or teach people about a particular subject, for example by a university or college teacher. Lectures are used to convey critical information, history, background, theories, and equations. A politician's speech, a minister's sermon, or even a business person’s sales presentation may be similar in form to a lecture. Usually the lecturer will stand at the front of the room and recite information relevant to the lecture's content.
Though lectures are much criticised as a teaching method, universities have not yet found practical alternative teaching methods for the large majority of their courses. Critics point out that lecturing is mainly a one-way method of communication that does not involve significant audience participation but relies upon passive learning. Therefore, lecturing is often contrasted to active learning. Lectures delivered by talented speakers can be highly stimulating; at the very least, lectures have survived in academia as a quick, cheap, and efficient way of introducing large numbers of students to a particular field of study.
Lectures have a significant role outside the classroom, as well. Academic and scientific awards routinely include a lecture as part of the honor, and academic conferences often center on "keynote addresses", i.e., lectures. The public lecture has a long history in the sciences and in social movements. Union halls, for instance, historically have hosted numerous free and public lectures on a wide variety of matters. Similarly, churches, community centers, libraries, museums, and other organizations have hosted lectures in furtherance of their missions or their constituents' interests. Lectures represent a continuation of oral tradition in contrast to textual communication in books and other media. Lectures may be considered a type of grey literature.

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  1. A

    Feynman Lecture Series: Read Vol 2 Before Vol 1?

    Hey everyone,I bought all 3 books of Feynman lecture series today.I am in third year of Bsc in Physics course.So I know the basics of the subject. Will it be OK if I read volume 2 i.e. electromagnetism and matter before and then read volume one ?
  2. C

    Is this equation from my lecture notes wrong? (RE: Transfer Functions)

    Mistake 1. In the lecture slides from my university it says that: "The response of a stable first-order transfer function to a unit sine wave input is:" Y(s)=\frac{1}{s+a}*\frac{\omega}{s^2+\omega^2} Isn't this missing an a in the numerator since the standard form of a first order transfer...
  3. tridianprime

    Problems to work alongside IIT Classical phys. lecture videos

    I have been working through the IIT Madras Lecture Series on Classical Mechanics on Youtube. They are excellent so far but I was wondering if anyone could point me towards either some problems designed for the course specifically or some other problems that work well with it. I would like to...
  4. W

    Are Feynman Lecture Exercises Available Yet?

    https://www.physicsforums.com/showthread.php?t=471333 Is this book with exercise solutions out yet?
  5. J

    Richard Feynman Lecture Notes: 5 Years of Hughes Research Labs

    I have made available 5 years of lecture notes presented by Richard Feynman at the Hughes Research labs. The note were hand taken and retranscribed after the 2 hour lectures. The lectures I attended began on the fall of 1966 and represent over 400 hours of lectures. The lectures covered: 1...
  6. Dembadon

    Professor wasting lecture time

    I have a professor who typically spends, on average, about a third of each lecture pontificating about his personal life or university politics. I respect his knowledge and he's overall a very helpful educator, but I get very irritated when I think about how much we're not covering during his...
  7. M

    Question RE: Susskind Entanglement Lecture 2

    In lecture 2 of the Entnglement lecture series at theoreticalminimum.com, Susskind is explaining a classical interpretation of Measureable and Observable that left me confused. I'll watch it again tonight, but thought I might get a good clarification from the excellent teachers here. In his...
  8. N

    Specific Question about Susskind's Lecture on Tachyons

    I may have poorly titled this post, since the lecture I'm talking about isn't just about tachyons, really. What I'm referring to is what Leonard Susskind says between the 50-60 minute mark: http://www.youtube.com/watch?v=gCyImLu0HSI&feature=youtu.be&t=46m30s In the video, Susskind...
  9. Spinnor

    Feynman's New Zealand lecture, Inca astronomy, rule and reason.

    In Feynman's New Zealand lecture, he points out how the Inca Indians were able to predict the motion of major heavenly bodies but did not understand the physics behind these motions (Let us assume that is true. We don't have, as Feynman points out, much recorded Inca history so it is...
  10. H

    Reading Cauchy's lecture on the derivative

    Reading Cauchy's lecture on the derivative, I see he goes from this limit \large \lim _{h \rightarrow 0} \frac{1}{ \log_A((A^h)^{\frac{1}{A^h-1}})} To this one A^h= 1+\beta \large \lim _{\beta \rightarrow 0} \frac{1}{ \log_A((1+ \beta)^{\frac{1}{\beta}})}=\frac{1}{\log_A(e)} I understand the...
  11. marellasunny

    Why I failed an exam? (problem solving vs lecture note reading)

    I failed an exam recently,90% of which comprises solving numerical problems based on formulae.(mechanical engineering) During this recent exam,I remembered the formulae well but didn't know how to connect them to the given problem. (although I use formulae in work everyday and have no problems...
  12. E

    Incorrect lecture notes relating Bandwidth with speed?

    Hello PF. Thanks for reading. My understanding of Bandwidth in the context in which I learn it (Analogue and Digital Communications) is that it is the spectral width of a signal, BW = f[upper] - f[lower]. However, my lecture notes then define 'fundamental limitations' as, Bandwidth...
  13. Z

    General Relativity Lecture Videos

    Is there a list of all the general relativity lecture videos somewhere? Most of the videos I find do not have very good resolution of the black boards.
  14. M

    Oppenheimer's QM lecture notes

    I was wondering whether Oppenheimer's legendary QM lecture notes still exist and can be found somewhere. I only found the content of theses lectures at http://bancroft.berkeley.edu/Exhibits/physics/learning03.html I assume Bohm's book ``Quantum Theory" from 1951 must contain some of the...
  15. mrspeedybob

    My mind is blown. ΔV problem from MIT lecture.

    The lecture in question... So what happens if I actually build this circuit and hook my fluke to it? How can moving my meter from the right side of the table to the left change my voltage reading if the circuit and my meter's connection to it is untouched? What happens if I put the meter...
  16. M

    What is the effectiveness of a lecture-based teaching format?

    So I watched this video from Sal Khan, basically he was talking a lot about reformation of education and how the standard lecture-type classroom model of education dates back to Prussia in the 1800's and how it follows a sort of assembly line-esque format, push kids to learn a subject by a...
  17. wolram

    Unveiling the Mystery of Dark Matter: A Comprehensive Lecture on DM

    http://arxiv.org/pdf/1301.0952.pdf things you always wanted to know about DM.
  18. G

    Inconsequence in Lawrence Krauss lecture

    Hi! I just found that vide on Youtube: http://www.youtube.com/watch?v=veU6hK3jMH4&feature=watch-vrec And something is not quite ok for me. In ~1:00 Krauss says, that in flat universe model universe would expand slower and slower but would never quite stop expanding. On the other hand, in last...
  19. M

    Schools Are 2.5 hour lectures twice a week effective for student learning?

    I was thinking as a student, is there some sort of thought that goes into have 2.5 hour lectures twice a week? I am thinking that this is not the best layout for learning, and was wondering if this has been studied by anyone to see what lecture times maximize student learning. For me, in a...
  20. L

    Physics Lecture for a screenplay

    I am writing a screenplay about a physicist who is researching pyschic phenomena, mainly the bending of spoons and other metal objects. He's a true believer in this and wants to find the scientific explanation for it. My screenplay starts with him lecturing students and I would like it to be a...
  21. H

    Is Feynman's Lecture on Algebra Still Relevant Today?

    Is anybody familiar with Feynman's lecture on algebra? Vol I Chapter 22? The first time I read it many years ago, I didn't grasp the development of Euler's formula. The result was astounding. And more so due to the way he developed it. In subsequent readings, I skipped over that part because...
  22. Y

    Finding Active & Reactive Power: Possible Error in Lecture

    here is a screenshot from one of my lectures talking about how to find active power (P) and reactive power (Q) He calculates P using 100*10 Cos (30-(-30), which I understand, though the answer he gets is 200W, but whenever I calculate it I get 500 because cos60 = 0.5 and 0.5*1000 is 500...
  23. C

    Gen Physics I: Where can I find good lecture notes/advice?

    1) I start General Physics I Fall 2012. I would greatly appreciate it if someone could guide me to some good lecture notes. Last semester, I found wonderful organic chemistry notes online that really helped me out. These are colorful, up-to-date and easy to understand pdf's of the lecture...
  24. J

    Direction of percieved gravity - MIT lecture

    http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/video-lectures/lecture-5/ starting at about 24 min in this video, Prof. Lewin starts talking about whirling an object around in a circle...now he then says that the direction of perceived gravity in is in the...
  25. E

    Is There an Error in Converting I2 from Phasor to Time Domain?

    So we're converting these currents from phasor to time domain with ω=4. I understand I1, but not how the lecturer got I2, is this an error with the notes? We have these phasors: Which are converted to this time domain (respectively): Any help is much appreciated.
  26. B

    Quantum Field Theory lecture by Tong (Cambridg)

    I am struggling with equation 1.5 in Tong's QFT course. I try to understand/explain it in strict calculus, i.e. without physics shortcuts like "small variations". I guess in the full blown explanation, \delta S is a total derivative. To be specific, with total derivative I mean the linear map...
  27. rhody

    Invitation: Quantum Man: Richard Feynman's life in science online lecture

    Quantum Man: Richard Feynman's life in science I registered, perhaps after it is over we could discuss in this thread. Rhody...
  28. Z

    Lecture videos of Theoretical physics

    Hi guys , I found a lot of incredibly useful lecture videos provided by the international center for theoretical physics see http://www.ictp.tv/ However there is one problems . They use a technology called EyA to view the lectures.It creates high quality images of the black board every 6 seconds...
  29. A

    Any (books, lecture notes or internet materials) that make you master the topics?

    You must have worked with some (books, lecture notes or internet materials) which make you master new topics. Could you suggest your choice to all? I want to follow others' track to study. If you got a nice material, you can generously upload and share the links of the lecture notes and...
  30. K

    [horrible lecture] should I give up going?

    HelloI got a horrible professor teaching the fundamental of computer science. The material is very easy but that guy makes it incredibly hard. His lectures are horrible and almost all of the students don't know what he talks about. Should I give up going to the lectures? I am sure the book...
  31. A

    Studying Are Lecture Notes Useful for studying?

    One day I borrowed a book published by Springer (For learning Mechanics). I find it very difficult to follow. Later, I discover that it is in fact Lecture Notes. I am only a yr 1 physics student, but I want to explore as many area in physics as I can. My question is, are Lecture Notes such as...
  32. Z

    Lecture notes in The Differential geometry of Gauge theory?

    Hi all , How can I find lecture notes on ArXiv ? I was looking for lecture notes on Yang-mills theories treated in the language of differential geometry but didn't succeed till now . Can some one recommend me some good resource for it?
  33. C

    Research and Lecture Theoretical Astrophysics | Post Doc Degree

    Hi, I want to Research and Lecture Theoretical astrophysics at a university when I'm older. I'm planning on doing a BSc (honours), Masters, PhD, and a ScD Do you need a Post Doc to research and do lecture? Apparently Post Doc are one of the hardest degrees ..
  34. C

    Transcript for Feynman's Messenger Lecture Series

    Hi, could someone please tell me where I might find a full transcript of R Feynman's Messenger Lecture at Cornell 1964 on "The Relation of Mathematics and Physics"? I know that it is available in video format on Project Tuva, but a transcript (not running alongside the video) would be very...
  35. G

    Is going to lecture a huge waste of time?

    I notice that more and more med students in my class have figured out by now that they don't need to attend lectures anymore to get good grades. Attendance can be sparse. Every lecture is recorded and can be watched online anyway. So what's the point of lectures? Almost all material covered...
  36. M

    Ideas for a lecture in new technologies in aircraft structure

    ideas for a lecture in "new technologies in aircraft structure" Hi everybody... One of my doctors wants to give a practical and a little technical lecture about "new technologies in aircraft structure" and he is requisting ideas from us... What practical ideas can be presented ...
  37. C

    Susskind Lecture - accelerate reference frames

    in at 0:47:00 Susskind begins discussing accelerated reference frames and notes that they relate to hyperbolas rather than parabolas. I understand the concept and need for the proper acceleration to be asymptotic at C. Susskind seems to infer that an observer in the accelerated frame will...
  38. Pengwuino

    My First Lecture: How Did It Go?

    WOOT! I just had my first lecture tonight, went 2 1/2 hours... with 20 minute break. And...... My head hurts. I've never had to talk that long before in my life. I'm glad I brought water. So how did it go? Well, I don't want to talk myself up too much, but I think I'm the greatest...
  39. J

    Daniel Dennet lecture on Free Will

    The questioner at 1:18:10 explains my thoughts on this very well. Dennett does not deny determinism. But he does suggest free will, that humans are capable of doing otherwise, and that there is more than one possible future, which he does not prove. Your thoughts?
  40. teroenza

    Possible title: Surface Error in Faraday's Law Lecture?

    Hello, At approximately 4 min 48 sec. the professor indicates that the surface for the surface integral is closed. This contradicts my albeit limited knowledge in which the magnetic flux through a closed surface is zero (Gauss's law for magnetism). Did he make an error of is my understanding...
  41. E

    Looking for a fan physics lecture topic for mathematicians

    hello, I am supposed to give a short (20-30 mins) lecture to some very smart 2nd year math majors, and i thought about finding an intersting physics topic. my first idea was special relativity, or more specificly deriving E=MC^2 from einsteins assumptions about light's behevior, but in the...
  42. marcus

    What makes Lie Groups a crucial theory in modern dynamics and beyond?

    http://arxiv.org/abs/1104.1106 Lecture Notes in Lie Groups Vladimir G. Ivancevic, Tijana T. Ivancevic (Submitted on 6 Apr 2011) These lecture notes in Lie Groups are designed for a 1--semester third year or graduate course in mathematics, physics, engineering, chemistry or biology. This...
  43. R

    MIT online lecture: Algebra error?

    Okay so I was watching this lecture. http://ocw.mit.edu/courses/mathematics/18-01-single-variable-calculus-fall-2006/video-lectures/lecture-1-derivatives/ Skip to 41 minutes He's solving the area for a triangle, and I think he got the answer wrong. The equation he got was 1/2 times...
  44. A

    Which Bulb is Brighter in a Series Circuit: 100W or 40W?

    Today in a lecture, prof asked that for 2 bulbs connected in series(100W and 40W), which was brighter? And the answer was the 40W bulb. His explanation was that we use P = I2 R. Higher power rating means higher R, and thus less bright. I argued that since P = VI, and I is constant, P is...
  45. Pythagorean

    Human Behavioral Biology Lecture

    For the Math and Science Learning Materials Forum Excellent Speaker, Robert Sapolsky, from Stanford University: http://www.youtube.com/view_play_list?p=848F2368C90DDC3D
  46. G

    Searching for Lecture Notes on Lie Groups from Physics Course

    Hello! Is someone aware if there are lecture notes about Lie Groups from a physics course? I would to study an exposition of this subject made by a physicist. Thank you in advance!
  47. C

    Lecture of Edward Witten and 2nd Dutch-IFT School (BRAZIL)

    The 2nd Joint Dutch-IFT School on Theoretical Physics will be held from February 14-18 at the IFT-UNESP in Sao Paulo. The opening lecture "String Theory and the Universe" will be given by Prof. Edward Witten (IAS, Princeton) at 10:15 on Monday Feb 14, followed by minicourses of Prof. Eric...
  48. L

    Studying Which is more effective for learning: Textbook or Lecture Notes?

    I was wondering if there is any compelling reason to read the assigned book instead of lecture notes either from the actually professor of the course you are taking or from another another source online as opposed to the book if they seem to cover the same material. Currently, I in my 3 "real...
  49. C

    Number of oxygen molecules in our lecture theatre

    1. Estimate the number of oxygen molecules in LTD under normal pressure and temperature. 2. I'm guessing you use PV=nRT to get the number of moles of gas in the room and work out the % of oxygen in the air, but I got a number which to me looks too small. 3. Volume of LTD is approx...
  50. marcus

    Core lecture abstracts for QG school

    Like the list of invited talks at the biannual QG conference, the list of lecture series at the ESF-QG schools gives a snapshot of where the field currently is. What work stands out---who is giving the main talks---what topics get mentioned in the abstracts. So it's something to learn from...
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