What is Review: Definition and 476 Discussions

A review is an evaluation of a publication, service, or company such as a movie (a movie review), video game (video game review), musical composition (music review of a composition or recording), book (book review); a piece of hardware like a car, home appliance, or computer; or softwares such as business software, sales softwares; or an event or performance, such as a live music concert, play, musical theater show, dance show or art exhibition. In addition to a critical evaluation, the review's author may assign the work a rating to indicate its relative merit. More loosely, an author may review current events, trends, or items in the news. A compilation of reviews may itself be called a review. The New York Review of Books, for instance, is a collection of essays on literature, culture, and current affairs. National Review, founded by William F. Buckley Jr., is an influential conservative magazine, and Monthly Review is a long-running socialist periodical.

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  1. B

    What is Dimensional Analysis in Atmospheric Science?

    It's been three semesters since I was last required to do a dimensional analysis problem, and I could use a little help here. Just know that the subscript notices come before the variables. In this case, [B]the final set of units must work out to be W/m^2[B]. The equations are: a)Q(sub)s=...
  2. E

    Looking for online Thermodynamics book or extended review

    Hello. A long time ago there was a post here of all the resources that we can find online for physics. I tried to find it searching a little bit, with no luck. Anyway, if someone know about that post, let me know, What I'm interested in is in a good thermodynamics review (or summary (?))...
  3. marcus

    Terrestrial planet search review paper

    http://arxiv.org/abs/astro-ph/0601469 Comparative Planetology and the Search for Life Beyond the Solar System Charles A. Beichman, Malcolm Fridlund, Wesley A. Traub, Karl R. Stapelfeldt, Andreas Quirrenbach, Sara Seager To Appear in Protosars and Planets V "The study of planets beyond...
  4. tandoorichicken

    Math Differentiation Review: Simplifying with Basic Equations

    For higher math classes, its trivial to say that if y=x, then y'=1. Higher level textbooks also don't review a lot of the basics that are easy to forget. So if you have an equation that looks like y=x(t), then even if dy/dt might be some complicated looking function in t, dy/dx is still just...
  5. ranger

    Review in calc I to prepare for calc II

    I'm doing a review in calc I to prepare for calc II. I'm now applications of derivatives (optimization). Okay so when I have the function I need to optimize, I need to take the derivative and find the critical point of the first derivative. But sometimes there's more than one critical point. Is...
  6. M

    Good book for me to review general math

    Can anyone recommend a good book for me to review general math such as fractions, decimals, percenttages, and division etc.. those are my weakest points in math, and I would like to strenghten them a bit.
  7. N

    Not your standard '2005 in review' thread

    You can read lots of these - http://skyandtelescope.com/news/article_1649_1.asp", for example - I thought it might be fun to take a different view! :smile: What were the most notable non-discoveries for 2005? What were the most outstanding failures? I'll go first. In the second...
  8. A

    What Concepts Should You Review Before a Chemistry Test?

    I think I got these right but I wanted to check first before I took my test... The ones that don't have any answers are ones I need help with. Concept Review: 1. Which of the following is most likely to form a cation? Xe Cl Ca S 2. Which of the following is a chemical...
  9. G

    Review My Essay: Pros & Cons of Grad School

    I would appericate it if someone here could look over my essay and post some comments. The things to look for are: Varied wording Grammer and spelling Good sentence structure Good paragraphs Verb tense Anything else that you find wrong with the paper. It's suppose to be...
  10. S

    test Review Problem That Wasn't In Any Homework I Can Find

    Please Help...test Review Problem That Wasn't In Any Homework I Can Find! i don't understand how to figure this problem out, and i really need the help. A kite is flying Y feet about the ground at the end of a 100 ft. string. the string makes an angle of (theta) with the ground. 1. find the...
  11. P

    Old Book Review - Classical Charged Particles

    Old Book Review - "Classical Charged Particles" Hi folks I've picked up a rather old book. It was written back in 1965 by Fritz Rohrlich and is called "Classical Charged Particles". I found this book by a reference in Jackson's EM text. I have to say that this is a superb book! I don't think...
  12. C

    Test Review 5 - limit of a constant sequence

    I need to prove that the limit of a constant sequence converges, using the definition of a limit. This is what I have: Let e > 0 be given. Then |sn - s| < e But sn = s for all sn, thus |s - s| < e |0| < e 0 < e Thus N can be any number? This proof is simple, but I am making it...
  13. C

    Test Review 4 - is it this easy?

    Let (sn) be a real sequence and s in R. Prove that lim sup (sn) < s implies sn < s for n large. My answer seems too easy. Is there anything missing? Given lim sup (sn) < s. By definition of lim sup, we know lim N->infinity sup {sn: n > N} < s Then for n > N, we must have sn < s...
  14. C

    Test Review 3 - convergence of series

    Problem: Suppose 0 < sn < 2 and sn+1 = root (sn + 2) for n in N. Prove 0 < sn < sn+1 < 2 holds for all n in N. Does sn converge? If so, what is the limit. I am able to show that sn+1 < 2 by squaring the equation sn+1 = root (sn + 2) and making a substitution. How would I go about...
  15. C

    Test Review 2 - a property of the infimum

    Another question: Prove that if a set E in R has a finite infimum and e > 0 is any positive number, then there is a point a in E such that inf E <= a < inf E + e. The first part, inf E <= a, is obvious from the definition of infimum. I am having trouble showing that a < inf E + e, even...
  16. C

    Test Review 1 - lim sups and lim infs

    Hello, I am taking Adv. Calc, and we have a test next week. I am going to post a few questions that I have from the review where I got stuck. If you have any help, please steer me in the right direction! Question 1: Suppose sn <= 0 <= tn for n in N. Prove (lim inf sn)(lim sup tn) <=...
  17. C

    Test Review 1 - lim sups and lim infs

    Hello, I am taking Adv. Calc, and we have a test next week. I am going to post a few questions that I have from the review where I got stuck. If you have any help, please steer me in the right direction! Question 1: Suppose sn <= 0 <= tn for n in N. Prove (lim inf sn)(lim sup tn) <=...
  18. marcus

    Semi-pop review of structure of universe

    in case of interest this got published in the journal Science, in July, and just now became freely available online. http://www.arxiv.org/abs/astro-ph/0510197 Mapping the Large Scale Structure of the Universe David H. Weinberg 4 pages, 1 figure. A brief, semi-popular review of large...
  19. P

    How Do You Solve Complex Electrical Circuit Problems?

    They go as followed: 1. A 30.0 mH inductor is connected to a standard electrical outlet (Vrms = 120 V; f = 60.0 Hz). Determine the energy stored in the inductor at t = (1/170) s, assuming that this energy is zero at t = 0. 2. What is the maximum current in a 5.00 µF capacitor when it is...
  20. R

    Need Help with (2^n) = 210? Get Expert Review Math Assistance Now!

    Hey everyone, I am stuck on this question: (2^1)(2^2)(2^3)(2^4)...(2^n) = 210 What is the value of n? I'd love to post what I have so far, except that the problem doesn't involve much work, so as soon as I have the first step I'll have the last...and I haven't yet gotten the first...
  21. B

    How Do I Tackle These Classical Mechanics Review Problems?

    Review problem for classical, help please! Hi I just started my classical mechanics class, and I was given this: a bunch of problems (image attached) (and one that I pulled from the notes I didnt know how to do as well.) that I could do for practice to refresh for the class, problem is I have...
  22. TheStatutoryApe

    Book Review (for recreational reading)

    Tell us what book(s) you have read recently and what you think about them. Be sure to add in whether or not you think it is a specialized taste that will enjoy a title or if you personally don't like a particular book but think others might. And try not to give away surprises!
  23. Ε

    Peer Review Journals: How Do They Work Today?

    Excuse the lay question, but how do peer review journals work these days, with the advent of the internet? I've seen people post arxiv articles; is that peer reviewed? Are there any worth subscribing to? Which ones are considered the most professional?
  24. Gokul43201

    Landing a Physics Job : book review

    http://www.springeronline.com/sgw/cda/frontpage/0,11855,4-40110-34-8894770-0,00.html?addToBasket Landing Your First Job · A Guide for Physics Students ( Rigden, J.S. 2002, Softcover, ISBN 0-7354-0080-6) $12.95 About this book This book is currently on sale (regular price : $25) and...
  25. S

    When Do Two Vertically Thrown Balls Meet?

    1. A ball A is thrown vertically upwards from the ground at a velocity of 20 m/s. A second identical ball is thrown vertically upwards, at the same velocity, one second later from a platform 10 meters above the ground. The two balls will be at the same height above ground when ... a. A is...
  26. SpaceTiger

    Review of Mainstream Cosmology

    With all the crazy ideas that get thrown around in this forum, I thought it would be good to step back and review the mainstream view on cosmology in 2005. The field is advancing very rapidly, so it's possible that even the most reliable websites will be woefully out of date, both in terms of...
  27. RadiationX

    I need some peer review of this problem

    find the radius and interval of convergence of: \sum_{n=1}^\infty\frac{(-1)^{(n+1)}nx^n}{2^n} the radius is x<2 and the interval is [-2,2) are these two answers correct?
  28. M

    Can x! be Resolved in a Polynomial Form?

    I still think the x! can be resolved 2 a polynomial and then solved normally,or can't it,cos my friend is already working on it and has began to mke progress. Or can't the x! be resolved let me know
  29. S

    What? No Star Wars review yet?

    I wasn't going to see this for a few weeks but was REALLY bored at work and there's a theater down the street. Go figure... If you liked the original Star Wars, even if you hated 1 & 2 (like I did!) SEE this one. It is dark and violent. There is no stupid Jar Jar kind of humor device, in fact...
  30. C

    Calculating Incline Distance for a Rolling Sphere | Review Questions Answered

    Review Questions- Need Help! A hollow sphere is rolling along a horizontal floor at 5.00 m/s when it comes to a 30.0° incline. How far up the incline does it roll before reversing direction? I am not sure how to start this problem. I know the answer is 4.25m but do not know/understand how...
  31. S

    AP Exam Review Answers: Access Free Response Solutions 1995-Present

    To prep for the upcoming AP exam, I got all of the AP Exams 1995-Present, but cannot find anywhere to check my answers for the free response sections online. Does anybody know if the answers are posted anywhere? :eek: this AP exam is going to be soo hard!
  32. R

    Review My Work: Arranging Atoms & Ions by Radius

    Okay I did my work but if someone would be so kind as to look at it and see if I am understanding. Questions 1. Explain why you would expect a BeF2 molecule to be linear but an SF2 molecule to be angular? BeF2 forms an ionic bond with 2 single bonds. Since Be is in group IIA it forms two sp...
  33. M

    Solving Review Problem on Dance Floor

    Hello, I have been looking at various review problems to prep for an exam and there is one I could not solve at all. Here it is: A flat dance floor of dimensions l(x) = 20m by l(y) = 16 m has a mass M of 150 kg. Use the bottom left corner of the dance floor as the origin. Three dance...
  34. P

    Meet the Fockers: Movie Review and Critique

    Okay, I'm doing a movie review, and I need some helpful critiquing on how to perfect it. Thanks for any help you can provide. Thanks ***************************************************** Before you even buy your ticket for Meet the Fockers, you know you are in for a lot of “focker” puns...
  35. P

    Afshar 2 slit experiment-peer review

    Afshar 2 slit experiment--peer review I have looked all over the web--I still have not seen any peer review of this experiment. According to Afshar, it should have been done 3-4 months ago. Anyone know anything about this? Photongod
  36. P

    Can anyone recommend a good calculus review?

    I am taking statistical mechanics this quarter, using the textbook Thermodynamics and an intro to thermostatics by Callen. The math in the derivations is from calculus, which I had 4 years ago and didn't really put all that much effort into. Consequently, I need a solid review of some...
  37. M

    Discover the Mind-Bending World of Math in Flatterland: A Book Review"

    Anyone who liked "Flatland", will love "Flatterland". It's a continuation of the story of "Flatland", from the PoV of A. Square's great-great-granddaughter: Vicki Line. Instead of "The Sphere", Vicki's guide is called "Space Hopper", and if you thought "The Sphere" heightened A. Square's...
  38. M

    Is there a reliable way to get feedback on poetry online?

    I realize this is insanely out of place on the physics forums but: Does anyone know of a way to submit poetry for review/critique whether by peers or professionals without being scammed by the numerous sites on the net? I've been looking for a while now and figured maybe someone here could...
  39. K

    Mid-term tomorrow, need some checking of answers of review packet

    Basically my teacher hands us out a review packet for physics and says to do it if we want practice...Okay I do the packet and I have it done, now my problem is that the teacher didn't give out the answers to the problems so I have no idea whether or not I did it right...so I am hoping some one...
  40. Ivan Seeking

    A review of dowsing: Evidence for and against

    Previous PF discussion: https://www.physicsforums.com/showthread.php?t=17088&page=1&pp=15&highlight=Divining Dowsing: Journal of Scientific Exploration ...In 1986, GTZ presented in its series of publications a special report number 183 on a project in the northern dry zone districts of Sri...
  41. L

    How Fast is the River Current Where the Sunbather Overtakes the Raft?

    Hey, I'm practising some exam review questions that i was given but i can't figure this one out A sunbather, drifting downstream on a raft, dives off the raft just as it passes under a briidge and swims against the current for 15 mins. She then turns and swims downstream, making the same...
  42. C

    How to Calculate Time Required for Investment to Quadruple at 7.1% Interest

    Hello all Just had a question about interest: Determine how much time is required for an investmnent to quadruple if interest is earned at a rate of 7.1% compunded continuously. Would I just use the formula Pe^ r^t? And then just substitute values (say P = 0)? Any help is...
  43. M

    Mastering Physics Problems: Tension, Forces, and Acceleration Explained

    My physics teacher gave us a huge packet with some review problems that we should know how to do for the test. There are 3 that I have no clue how to do. 1.) A morbidly obese man weighing 500 Newtons stands 2.5 meters from the inner edge of a nail supporting a wooden platform. The...
  44. M

    Problem with two review problems

    First of all, thanks for anyone who helps me with this 1. Find the perimeter of an Isoceles triangle that has base angles of 36 degrees and an area of 580cm sq. The given answer is 126.4cm. 2. A designer plan the top of a rectangular workbench to be four times as long as it is wide, and...
  45. P

    Into Thermodynamics Review

    Hey watsup guys, I'm up to my last test :biggrin: (YESSS!) this wednesday and while reviewing the practice tests I took some stabs at a few but would like to ask for a little help with them. I'll post the questions with my answer choices(bold) and appreciate any corrections, advice...
  46. H

    Solving Review Questions for Test: Bernoulli's Principle, Buoyancy, and More

    I need some help with some review questions for the test. I am trying to check the answers I get with the ones the teacher provided, bit I'm getting stuck. Knowing which equations to use etc... would be really helpful. What is the maximum weight an aircraft with a wing area of x m^2 can...
  47. R

    Which Formulas Should I Use for My Review Worksheet?

    i already have like half of the sheet done but any help you give would be greatly appreciated. just telling me which formulas to use would be a great help. thanks a lot i already have answered 1 2 3 4 5 6 7 10 13 14 24 and 25 thanks again okay posted worksheet
  48. T

    M$ Takes Action Against Modded Xboxes: An Awesome Game Review

    M$ came up with a whole bunch of new precautions for xbox live that is able to detect if an xbox is modded. It looks to see if the harddrive is still the standard 8 gb and that it is running the proper operating system. Thus almost all xboxes... even ones with chips that turn off were baned...
  49. P

    Unit Test Review: Elevator Speed Calculation

    Hey guys -> this is for a friend and i haven't gotten this far in our class so yeah if you could expain the answer that would be appreciated. the motor of an elevator can produce 14KW of power. The elevator has a mass of 1100Kg including its contents. At what constant speed will the...
  50. S

    Boost Your Math Skills: Prealgebra Review Assistance

    nevermind, and can't delete. =)
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