Advanced Potion-Making (by Libatius Borage!) was used for sixth year Potions classes. Canon does not make clear whether it was also used for seventh year Potions, so I'm going to presume it was only the sixth years' textbook. Slughorn passes out two battered copies of Advanced Potion-Making to Harry and Ron, and Harry ends up with Snape's old textbook, as we know. A few relevant passages from Half-Blood Prince and Deathly Hallows:     Harry bent low to retrieve the book and, as he did so, he saw something scribbled along   the bottom of the back cover in the same small, cramped handwriting as the instructions that had won him his bottle of Felix Felicis, now safely hidden inside a pair of socks in his trunk upstairs.   This Book is the Property of the Half-Blood Prince   Half-Blood Prince - page 183 - Bloomsbury - chapter nine, The Half-Blood Prince   ‘SECTUMSEMPRA!’ bellowed Harry from the floor, waving his wand wildly.   Blood spurted from Malfoy’s face and chest as though he had been slashed with an invisible sword. He staggered backwards and collapsed on to the waterlogged floor with a great splash, his wand falling from his limp right hand.   Half-Blood Prince - page 489 - Bloomsbury - chapter twenty-four, Sectumsempra   ‘You dare use my own spells against me, Potter? It was I who invented them – I, the Half-Blood Prince! And you’d turn my inventions on me, like your filthy father, would you? I   don’t think so ... no!’   Half-Blood Prince - page 563 - Bloomsbury - chapter twenty-eight, The Flight of the Prince   ‘Snape?’ shouted Harry. ‘You didn’t say –’   ‘He lost his hood during the chase. Sectumsempra was always a speciality of Snape’s. I wish I could say I’d paid him back in kind, but it was all I could do to keep George on the broom after he was injured, he was losing so much blood.’   Deathly Hallows - page 66 - Bloomsbury - chapter five, Fallen Warrior   There is no question Snape is the Half-Blood Prince, or that Harry got hold of Snape's former textbook; as well as useful potion-making information, it also contained rather questionable (Levicorpus) and downright dangerous original spells (Sectumsempra).  Not only did Snape have the opportunity to secure his copy of Advanced Potions Making at the end of his sixth year, I'm guessing he had all of his seventh year to destroy, hide, or keep the book as well. Also, he had at least five years as Hogwarts' known Potions master to ensure the book was kept away from the students.   As Potions master, Snape would have had access to all inventory relating to the Potions classes, including Hogwarts' copies of any potions textbooks. It would seem likely, while arranging or cleaning his classroom and stores, Snape would have come across his old textbook at some point. I personally think he would've recognized it. So, to ensure the book didn't fall into students' hands:  Why didn't Snape keep or secure his copy of Advanced Potion-Making?   (Or did Snape want a student to find it for boastful personal reasons, just as Tom Riddle used the diary Horcrux to take credit for the Basilisk and being the Heir of Slytherin?)
Inspired by  I was wondering why the Half Blood Prince left his book as a class copy. One would think that it was precious to him, since he invested so much in it. He made up potions and spells up by his own. I would expect him to keep it to himself. Both, because of the personal value of it, and to prevent others to (as happened at last) use his work (misguided and/or against him).  Is there any canon explanation why his book was left as class copy?
Confusing article status for journals of American Mathematical Society: "reviewing" AND "being handled by an editor" The web page of my article in the AMS editorial system for some three months says &quot;Article status: Reviewing&quot; and in the next line &quot;Your paper is being handled by an editor&quot;. I find this confusing as the &quot;reviewing&quot; status appears to suggest that the article is with the referee(s) rather than with the editor but this in turn seems to contradict the line &quot;Your paper is being handled by an editor&quot;.  Could someone with enough experience with AMS journals please explain how should one interpret the combination of &quot;Article status: Reviewing&quot; and the line &quot;Your paper is being handled by an editor&quot; at the article page? More broadly, which are the possible article statuses in the AMS editorial system?  Many thanks in advance. Has the concept of non-integer $(n+m)$-dimensional spacetime ever been investigated by theoretical physicists? The following image serves to aid the reader in understanding the "privileged character" of $3+1$-spacetime.    The wikipedia article on , and the  "The priveleged character of $3+1$-dimensional spacetime" in particular, made me think a bit about the possibility that we might live in a non-integer amount of spatial and/or time dimensions.   The notion of attaching a non-negative real number to a metric space has at least mathematically already been described by such concepts as "" and "".   This may sound silly/ignorant/absurd to professional practicing theoretical physicists. To me (a layman), however, it doesn't sound much stranger than the idea of wrapping up six extra dimensions (which is, from what I understand, considered to be a serious possibility by those who study $10$-dimensional String Theory) into intricate shapes called "Calabi-Yau Manifolds".   Has any research on $(a +b)$-dimensional spacetime (where $a,b \in \mathbb{R}_{\geq 0} $) ever been done? If so, what where the findings? If not, why not? How to achieve this smudge effect in photoshop? I came across this photo by Jacob Sutton and wanted to know if someone knew how to get this effect in photoshop?    (source: ) StructureMap error when invalid controller I am using Structure map like the MVC storefront by Rob Conery does and I have an AdminController and so to get to it I just type:  website/Admin/action   however if I miss spell the controller name I get the error below:  Exception Details: System.ArgumentNullException: Value cannot be null. Parameter name: key  There error occurs on this line:  Controller controller = ObjectFactory.GetInstance(controllerType) as Controller;   Does anyone have any ideas on how I can handle this error or not allow it to happen at all and maybe just goto a 404 page??  Cheers in advance How do I update Custom Label's value using apex? Which one would be a better option metadata api or tooling api? Please provide example I'am working on post deployment automation process in salesforce. I am stuck on how should I update values in custom labels which needs tobe updated manually after a sandbox refresh. Deleting self-answered question gets "Delete this answered question" warning I am working on a website for a client, and even though the site ranks extremely well for various different keywords (which is good), if I search for the site's name the homepage does not appear even on the second page on Google. I have to add the .com so it will appear.  But, for big brands like Best Buy, Nike and millions of others it is enough to just search for the brand itself and the first or second suggestion on Google is the brand's homepage.  How can I raise my brand's authority in Google so it will appear in Google on the first page when some searches for it?  I have tried changing the breadcrumbs so instead of "HOME" it is now the brandname, linked to the homepage. I thought that it will help with internal linking if the anchor text is the brand's name instead of the word "HOME".  Any ideas please? I have read the thread regarding , but it does not answer my question.  I am confused about the notation for change in Physics. In Mathematics, $\delta$ and $\Delta$ essentially refer to the same thing, i.e., change. This means that $\Delta x = x_1 - x_2 = \delta x$. The difference between $\delta$ and $d$ is also clear and distinct in differential calculus. We know that $\frac{dy}{dx}$ is always an operator and not a fraction, whereas $\frac{\delta y}{\delta x}$ is an infinitesimal change.   In Physics, however, the distinction is not as clear. Can anyone offer a clearer picture? I compile my project with VIsual Studio 2005 Express Edition, and get this linking error. Can anyone suggest how to solve that? Pagenumbers aligned raggedleft in scrartcl with tocstyle? When trying to typeset a table of contents with KOMAscriptand tocstyle(alpha 0.2d), I finally managed to change the font of the pagenumbers (like the rest of the document to CMSS) with \settocfeature{pagenumberhook}{\changefont{cmss}{m}{n}}, however now the page numbers are aligned at the left and not at the right side!   So how can I change that back to an alignment on the right side of the page numbers like that, but with the sans serif font?   Example:  \documentclass[11pt, a4paper]{scrartcl} \usepackage[ngerman]{babel} \usepackage{blindtext}  \newcommand{\changefont}[3]{ \fontfamily{#1} \fontseries{#2} \fontshape{#3} \selectfont}  \usepackage[]{tocstyle} \usetocstyle{classic} %\settocstylefeature[1]{entryvskip}{10pt} %\settocstylefeature[2]{entryvskip}{3pt} %\settocstylefeature[1]{entryhook}{\bfseries} \settocfeature{pagenumberhook}{\changefont{cmss}{m}{n}}  \begin{document}  \changefont{cmss}{m}{n}  \tableofcontents  \newpage  \blinddocument \blinddocument \blinddocument  \end{document} Best place to put bug reports? What websites or other resources do users of Blender have available to them to report bugs or problems with the program?  I would like to get this issue cleared in Q&amp;A format so that we can link new users with bug-report-style questions to this post. calling main() in main() in c I would like to add my bibliography to my presentation in IEEE format. What should I add to my preamble and code.  \documentclass{beamer} \setbeamertemplate{footline}[page number]  \usepackage{graphicx} \usepackage{booktabs} \begin{document} \section{Reference} \begin{frame} \frametitle{Reference}  \end{frame}   I'm using the same bibTex which I use to make the IEEE paper. I'm trying Google's PageSpeed online service  Ironically, it's primarily highlighting Google's own services as something that needs improvement on my site  1) jQuery from Google: blocking. So I moved all javascript from &lt;head&gt; to the end of the document before &lt;/body&gt;. That helped  2) Linking to external Google Font CSS (in &lt;head&gt;): blocking. But the font is critical to the design of the page and should load before much else  3) Google Analytics: Caching is not good. (Google has set it internally to 2 hours expiration). Don't know how to change this (this is also placed at the bottom of page)  The Google Font is highlighted as a big priority to change.  How can I fix this? Where/how should I call the the font? Maximum weight an average bicycle can carry? A few years ago, I've bought  (see edit) bike. At that time I was around 90 kgs and I didn't have any problems.  Today I'm around 120 kgs and I was considering (among other things) starting cycling again. Is this bike "good" enough to carry me? What should I expect? Any tips?  EDIT! Apparently, Drag have renamed some of their bikes in the last few years, so the above information is a bit wrong.  seems to be my bike. At first I didn't recognize much difference, but this one has suspension on the front which mine also has. Does this change anything How do you convert a cake recipe to make brownies? How to transit through Delhi without a visa? I have read a lot on this subject on the Lonely Planet forum and it looks like the staff on ground can transfer your bags through the Delhi airport if you have a connecting flight without you having to go out to check them in again and therefore needing a visa. I refer of course to the situation when you go with 2 different airlines, because otherwise the luggage is transfered automatically.  I posted a  and mentioned it briefly there, however I think this subject deserves a separate question and a detailed answer.  Does it depend on the type on an airline? I have read that Jet is no problem, what about AirIndia and IndiGo? And what about the incoming flight to Delhi from Europe or USA, do they all can hand over you luggage to the Indian airlines and pick it up again on the way home? Do you have to contact them before and explain your situation? Or check in your luggage directly to your desired destination? An example:    O  O?   There is a triple letter tile to the right of the bottom O, indicated with a ?.  If I place an X on it, making the words OX (vertical) and OX (horizontal), do I score 50 points (scoring the tile twice) or 34 (scoring it once)? Showing $F[x,y]/(ax^2+by^2-1)$ is a Dedekind domain I had always kind of wondered why we didn't see interference in things like windows -- we were taught that the condition is that the thickness of the film/slab/medium just has to be an integral number of wavelengths, $d=m\lambda$. My logic was, if visible light has wavelengths ~400-780nm, any window pane has got to be an integral number of wavelengths (or close to integral) for some of the wavelengths in the visible.  For example, if a window is, $6mm = 6\times10^6nm$ thick, then you should see interference for wavelengths (and some range around them) 200nm, 250nm, 300nm, 400nm, 500nm, 600nm... Because 6mm is an integral number of each of those.  Obviously that would be really annoying and isn't the case. I found  (warning: PDF) source that seems to explain it and I was wondering if what they're saying is sound. On the 10th page (p171 for them), it says that the reason we don't see this interference is that no window is that smooth, it has a variance in the thickness of at least several wavelengths, so the interference effect is effectively average out among all those thicknesses, which usually gets rid of it. They do the math and show that.  Is that the reason?  If so, that leads me to two questions: Could we, if we were really careful and used something like MBE, make a glass window with that sort of accuracy, and then see interference effects in the optical range? I know that quartz crystal monitors can easily give you nanometer accuracy for evaporators and sputterers, but they also have pretty limited growth rates.  My second question is, then, do we see interference effects in glass windows with electromagnetic radiation of a comparable wavelength, like microwaves?  Thanks!