What is Introductory: Definition and 366 Discussions

Introductory diving, also known as introductory scuba experience, trial diving and resort diving are dives where people without diver training or certification can experience scuba diving under the guidance of a recreational diving instructor. Introductory diving is an opportunity for interested people to find out by practical experience at a relatively low cost if they would be interested in greater involvement in scuba diving. For scuba instructors and diving schools is it an opportunity to acquire new customers. An introductory diving experience is much less time-consuming and costly than the completion of autonomous diver training, but has little lasting value, as it is an experience program only, for which no certification is issued. Introductory scuba diving experiences are intended to introduce people to recreational diving, and increase the potential client base of dive shops to include people who do not have the time or inclination to complete an entry level certification program.

View More On Wikipedia.org
  1. U

    Astronomy 101: Exploring the Universe through True and False Questions

    Hello all, I am studying for an Introductory Astronomy final and I came across an old exam with a few True and False Questions Supermassive black holes are found in the centres of large galaxies (Supermassive is tricky here, not sure on this) Inflation is the name we give to...
  2. Q

    Fluid Mechanics introductory textbooks

    Hi Can anyone recommend me good introductory textbooks on fluid mechanics, both from the physical and engineering perspectives?
  3. V

    Book for Introductory quantum mechanics

    Hello >:D Can u suggest me any book which has well explained basic (introductory)ideas - Louis de Broglie's equation ,uncertainty principle ,the wave model by Erwin Schrodinger - in its starting chapter. Thanks in advance (^.^)
  4. V

    Intro to Limit: Infinity & Zero Cases

    Introductory "Limit" hello :D Started to study calculus and was on "limits". I got a little doubt :D When the value of any limit approaches to Infinity.i.e when the numerator have a non zero number but the denominator gets a zero on putting the variable's value , is it called that the limit...
  5. R

    Rigorous Introductory physics textbook

    I'm wondering if anybody knows about or has used a good introductory physics textbook that is mathematically rigorous. I'm really interested in physics, but I'm a mathematics student and I CAN'T STAND any of the books I've tried to use so far (eg. Knight's Physics). I've really grown to dislike...
  6. R

    Does anyone know a very good introductory book to topology?

    Does anyone know a very good introductory book to topology? I am looking for an introductory book with solved examples, proves and so on. Thanks
  7. Seanskahn

    Find the Right Introductory Textbook for You

    any suggestions for introductory textbook?
  8. D

    Mathematica Really Introductory Mathematica Question

    Hello everyone, I apologize for posting such an introductory mathematica question, but I can't find an answer anywhere. I seem to be having trouble assigning variables and then plotting with the variable name. Perhaps I'm thinking too much in terms of ordinary computer programming or...
  9. B

    Introductory number theory textbook

    What is a good introductory textbook for beginners?
  10. W

    (Another) Introductory Level Calculus Question

    Homework Statement The cross section of a canal can be modeled by a parabola. The canal is 80 m wide at ground level and 20 m deep at its lowest point. The canal is 0.8 km long. Find the volume of water in the canal when it is full to ground level. Homework Equations Will add them...
  11. W

    Introductory Level Calculus Question

    I know this is the Precalculus Mathematics forum, but this is the kind of intro-level stuff that is taught in general high school mathematics classes before high school calculus, so I thought it would be better off here. Homework Statement An object is moving in a straight line. P is a point...
  12. L

    Engineering Introductory circuit problems

    Homework Statement i have a simple circuit with 115 V and a resistance of 10 ohms. i have to find : a) load current for the circuit b)current through circuit if the resistance becomes open circuited c)voltage across circuit if the resistance becomes open circuited d)current through...
  13. E

    Courses Which Introductory Physics Course Sequence Should I Take?

    I'm going to be a freshman next year in college and the school I'm going to offers two sequences for possible physics majors. The "highly recommended" sequence is a modern introduction made up of three courses which introduces physics by incorporating relativity from the beginning. The other...
  14. Gamma

    Should I Include a Lab on Measurement Instruments in My Physics Course?

    I am going to teach in a two year private college in September. Currently I am in the process of determining what laboratory experiments will the students do so that I can be prepared with the necessary laboratory equipments. My question is, how important is it to have a lab on measurement...
  15. J

    Find Intro Biology Textbook: High School Level

    Hey all, I'm looking for a good introductory biology textbook at the high school level. I never took biology in high school, so I need something that is very introductory, but at the same time a good book so that I'll be well prepared for biology courses in college.
  16. nicksauce

    Introductory book on Lie Groups?

    Hi. I'm looking for an introductory book on Lie Groups and Lie Algebras and their applications in physics. Preferably the kind of book that emphasizes understanding, applications and examples, rather than proofs. Any suggestions? Edit: Please move this to Science Book Discussion.
  17. I

    Introductory Linear Alebra proof question

    Homework Statement Let A be an n x n matrix and let x and y be vectors in R^n. Show that if Ax = Ay and x \neq y, then the matrix A must be singular.Homework Equations So far we have learned the definition of a matrix that has an inverse to be one where: if there exists a matrix B and AB = BA...
  18. L

    A Good, Clear, Introductory Text?

    So, I started with "Physics for Dummies", but it quickly became confusing. They use speed and velocity interchangeably... calling acceleration the rate at which speed changes, talking about negative speed, telling me that vector a + vector b = vector c. After internet research, I'm pretty sure...
  19. L

    Introductory Special Relativity book? UK

    Hi I'm an undergrad studying Materials Science in the UK and hope to move more and more towards physics in my academic career, and was wondering if anyone new of any good books to introduce Special Relativity, I can do basic calculus, and I am OK with classical mechanics, and know a little...
  20. N

    Introductory Electromagnetics: induced E-field

    Homework Statement "You have an ideal solenoid with n windings per meter, with a current I = I' sin(wt) going through it. Calculate the induced electric field inside and outside the coil. Side: compare with dipole antenna." Homework Equations Maxwell equations B = n mu I (magnetic...
  21. MathematicalPhysicist

    Is there a course available for the Riemann Hypothesis (RH)?

    Does someone know if there's a course offered on RH? I mean reading the literature can be quite intimidating without some beckground before, I read somewhere that the prof from purdue (who allegedlly proved RH) was contemplating offering such a course, but didn't offer such a course.
  22. L

    Introductory to chem course Stoichometry question wrong answer, can anyone fix it

    Question: A 25 mL sample of H2C204 solution required 19.62 mL of 0.341 M NaOH for neutralization. Calculate the molarity of the acid? The reaction was : H2C204 + 2NaOH ---------------------> Na2C2O4 + 2H2O Attempt: [Which line has the mistake in it and what is it?] converted 25mL to L...
  23. F

    Introductory Book on Differential Geometry

    Hey, I was wondering if anyone could recommend an introductory book for differential geometry. I am studying general relativity and need some help with this topic. Thanks.
  24. S

    Introductory book on gauge theory

    Hello, Could somebody please point me out introductory online book/paper with which I can start understanding gauge theory and how to find out about the progress in the areas Thx
  25. E

    A good introductory book on acoustic emissions?

    I am looking for an introductory book on sensing using acoustic emissions. Specifically, I am hoping to use acoustic emissions signals to detect tool wear (and classify the wear as mild, severe, etc.). Does anyone have a recommendation? Something with examples using LabView and/or MATLAB...
  26. O

    I need an introductory book on Conformal Field Theory

    Can anybody suggest a good introductory book on CFT. I would like to learn String Theory; and this is my basic motivation to learn CFT...
  27. O

    Good Intro Book on CFT: Suggestions Wanted

    Can anybody suggest a good introductory book on CFT. I would like to learn String Theory; and this is my basic motivation to learn CFT...
  28. E

    Introductory Calculus Based Physics, Help save Matt's life. He needs you.

    Hello all, this is my first of likely many posts here at the newly discovered Physics Forums. I'll do my best to help others out, and hopefully will receive the same in return. I've gotten through about 3/4 of a large problem that I'm working through in my book (no solution manual FTL). Here's...
  29. C

    In search of a great book for introductory signals and systems

    Hi all, I am enrolled in an introductory signals and systems course at my university. I don't like talking down on my professors but in this case I can't help it. He is one of the worst teachers I have had in my life. I have visited his office hours but he's not really helpful in there...
  30. G

    HELP Book recommendations for introductory physics

    I really would appreciate your help. I will be starting college this September and physics will be one of my course. I know very little about physics because i didn't do it in high school (i attended an international high school). Do you know of any ebook that will be perfect for me to self...
  31. M

    What is the uncertainty in y for given angular velocity and position values?

    Homework Statement Given that the uncertainty in the angular velocity is δω = 0.48 rad/s and the uncertainty in x is δx = 0.37 cm, calculate the uncertainty in y (δy) for the following points. The angular velocity of the bowl is 16.3 rad/s and you may ignore the uncertainty in H. I have...
  32. O

    Introductory material - GR Hamiltonian Treatment

    Hello! I'm looking for some introductory materials on the Hamiltonian Treatment of General Relativity; can anybody help with some references?
  33. H

    Introductory books with lots of problems

    Are there any good books that focus on teaching the subject then supplying many problems? For trig, algebra, geometry and calculus at high school (gr 12) -> first year university levels. Basically refresher books that will help bridge the gap nicely for going from high school to university.
  34. N

    New introductory book on supersymmetry

    I hope it's ok to post this here. I have written an introductory book on supersymmetry, which assumes only some basic knowledge in quantum field theory. I made it as detailed and pedagogical as possible. Basically I wrote the book that I wish had been available when I first learned SUSY. The...
  35. majormuss

    How to Solve an Introductory Momentum Problem Using Impulse?

    Homework Statement Can someone help me solve this Physics question(about momentum)...? A 2.0 Kg body is initially traveling at a velocity of 40 meters/sec East, If a constant force of 10 Newtons due East is applied to the body for 5 seconds , the final speed the body is? Homework...
  36. datafiend

    Introductory Pre-Calc or Calc textbooks

    Hey all, What would you recommend for an introductory pre-calc or calc textbook? I am considering going back to school and instead of taking the Business Calc class I took 10 years ago, (which I passed with a C) attempting the more rigorous engineering series Calculus Courses. It's been a...
  37. M

    Best Introductory Physics II books

    I'm going to be taking second semester physics (calculus based) which is basically the E&M portion of the book and waves. I want some good textbooks and book recommendations. Like good books for understanding the materials. Do you think A treatise on E&M by Maxwell is too advanced for me or...
  38. M

    Engineering Introductory circuit analysis - thevenin circuits

    Homework Statement Homework Equations Thevenin stuff, right? The Attempt at a Solution So, I tried to re-write everything and make it a bit easier to understand: I ended up getting Rth completely fine and everything, but I can't seem to get Eth. So from there, I...
  39. N

    Introductory demonstration materials

    Hello all, While searching for a holiday gift for a younger sibling (who is rapidly becoming interested in the sciences), I remembered a demonstration from a high school physics course that sparked my own interest in physics. It involved a unique object - a light bulb with a needle and 4 black...
  40. M

    Engineering Question regarding introductory circuit analysis

    Hello! I have been working on this problem for around 1.5 hours, and decided I simply need help. Homework Statement "Using branch-current analysis, find the magnitude and direction of the current through each resistor for the network. Homework Equations I tried using kirchhoffs...
  41. jacksonpeeble

    Introductory Power/Work Problem

    Homework Statement 1. Some gliders are launched from the ground by means of a winch, which rapidly reels in a towing cable attached to the glider. What average power must the winch supply in order to accelerate a 188-kg ultra-light glider from rest to 24.0 m/s over a horizontal distance of 51.0...
  42. T

    Introductory acoustics & noise control tutorial

    Homework Statement A small reverberation chamber is constructed with concrete walls. Its internal dimensions are 2 x 2.5 x 3m. Calculate the final steady-state sound pressure level produced by a source of 7.5microwatts acoustic output. Assume the absorption coefficient of the concrete to be...
  43. T

    Introductory Vector Equation Illustrated by a Moving River - Picture Included

    Introductory Vector Equation Illustrated by a Moving River -- Picture Included Homework Statement A swimmer wants to cross a river, from point A to point B, as shown in the figure. The distance (from A to C) is 100 , the distance (from C to B) is 75 , and the speed of the current in the...
  44. J

    Introductory Particle Physics - Form factor, charge distribution?

    Here is the problem. I've been messing around with it for a while but I'm not sure if what I'm trying to do is the right way to approach this. The form factor F(q) = \int\rho(\vec{r})e^{i\vec{q}.\vec{r}/\hbar}d^{3}\vec{r} is the 3D Fourier Transform of the normalised charge distribution...
  45. C

    Introductory PDE (diffusion equation)

    Homework Statement u_t = -{{u_{x}}_{x}} u(x,0) = e^{-x^2} Homework Equations The Attempt at a Solution The initial state is a bell curve centred at x=0. The second partial derivative of u at t=0 is {4x^2}{e^{-x^2}}, which is a Gaussian function, which means nothing to me other than its...
  46. M

    Need help with introductory analysis proof

    The question is in Wade's "Introduction to Analysis" 3rd. edition. Question 1.3.4 Prove that for all real numbers 'a' and natural numbers 'n' there exists a rational number r_n such that |a - r_n| < 1/n. (my) Proof: |a - r_n| < 1/n iff -1/n < a-r_n < 1/n iff -1/n - a < -r_n < 1/n -...
  47. H

    Introductory Astronomy Question - function help

    The question asks to find a new expression for a function, by substituting suitable expressions for the elimination of lambda and T. The function is: b(x)= h^4 * c^3 * U(sub-lambda) / 2*(kT)^5 In this case: U(sub-lambda)= U(sub-lambda)(lambda,T) - Planck Blackbody Function x= lambda*k*T /...
  48. M

    Best Undergraduate Introductory book to Physics

    I read a post a while back about getting Physics by Resnick, Krane and Halliday 1st or 2nd Edition but I can't find the first and second edition online. I can only find the fourth edition and the fifth edition. Which one should I buy? Which one is better in terms of explanations, proofs...
  49. S

    Introductory physics book any good?

    Is this free introductory physics book any good? http://www.anselm.edu/internet/physics/cbphysics/index.html. If not do you know any other cheaper introductory physics books that are at a high level (under $70 I'm saving for more advanced books)?
  50. A

    Anyone know any good introductory philosophy books?

    Anyone know any good introductory philosophy books? Unfortunately, all the intro to Philosophy courses at my university are closed until next year. I'm an engineering major, which practically has nothing to do with this. However, I find myself highly interested, or at least intrigued, by...
Back
Top