What was the spell with purple flame used by Dolohov on Hermione during the Battle at the Department of Mysteries in Order of the Phoenix? If Dolohov hadn't been silenced, would it have killed her?
The spell was cast without words, simply a flick of the Death Eater's wand, and a 'streak of purple flame' that lanced across her chest. It was later mentioned that the spell was weakened because of the lack of a verbal component, but still 'did enough damage as it was'. She was in the infirmary healing from the damage for some time. What spell was this?
Hydraulic Disk brake piston not fully retracting My front disk brake's piston doesn't fully retract.  While I can ride the bike, the brake is slightly rubbing.  (IE, if I just spin the wheel with my hand, it'll go around about one and a half times and then stop.) It's definitely slowing me down.   If this fixable?  The advice I got was that it's not worth the trouble and to buy a replacement set.  The current brakes are Avid Juicy 7s that are about 7 years old How to escape ampersand in \acro command? I am trying to use the acronym package to create an acronym list. The problem is that one of the acronyms I need to use contains an ampersand ('&amp;').  But when I try to compile the .tex file I get this error:  ! Missing \endcsname inserted. &lt;to be read again&gt;                     \&amp; l.2 ...&amp;M}[\AC@hyperlink{M\&amp;M}{M\&amp;M}]{I like them}   Here is an example:  \usepackage{amsmath} \usepackage{acronym}  \begin{document}  \begin{acronym} \acro{M\&amp;M}{I like them} \end{acronym}  \end{document}   So how do I use an ampersand in an acronym using the acronym package?  More generally, how is it possible to apply special formatting to a single acronym? For example  \acro{\textit{IAF}}{Italic acronym frenzy} Maximum Likelihood Estimate with different parameters I just installed a fresh install of 32-bit 12.04 LTS Pangolin today. When I tried to install a few applications, it was really slow. But when I download a .deb or .tar.gz file from on my web browser, it is a lot faster.  Computer specs:  HP Pavilion Slimline s7700n PC  [Memory]         873.7 MiB  [Processor]      AMD Athlon(tm) 64 X2 Dual Core Provessor 3800+ x 2  [Graphics]       GeForce 6105 LE/integrated/SSE2/3DNOW!  [Disk Size] 638.5 GB  I normally get 200-400 kbps.  This is the comparison. Sentences with "no one" Why can't I catch Pokemon in Pokemon Go anymore? Which one of these adjectives is correct? I can see that both of them are being used, I'm just not sure which one is grammatically correct. Are there any general rules to follow as to the use of one against the use of the other? How to make a series of rectangles follow a pen path I am trying to get a series of shapes (rectangles) to follow a path (sine wave) that I made with the pen tool, but I have no clue how to do that or if it is possible.   I have tried warping a rectangle into the sine wave path, but it takes many different warped rectangles and it isn't smooth.  I thought  might work for rectangles, but it only works for text. Are there names for consonant-shifts when suffixes are added? Can HTML checkboxes be set to readonly? I thought they could be, but as I'm not putting my money where my mouth was (so to speak) setting the readonly attribute doesn't actually seem to do anything.  I'd rather not use Disabled, since I want the checked check boxes to be submitted with the rest of the form, I just don't want the client to be able to change them under certain circumstances. How do I install Java, including in my browser, so websites with Java work? What is the term for replacing a name or brand with a funny pejorative / sardonicism? What is the term for when one replaces a well-known name [(Proper) noun, company, brand, etc.] with one that tries to be funny yet pejoratively descriptive, different but similar enough that one's audience can likely understand the replacement?  For example: Whole Foods ===> Whole Paycheck; Comcast ==> Scumcast; Starbucks ==> Charbucks; Kinko's == Stinko's; eBay ==> Evil Bay  I tend to use sobriquet don't believe this explicitly implies funny as well as insulting. Moniker again is close but not specific to the above description.  There is a similar question which proposes tortonym and malapropsim, but it does not seem to settle the argument definitively:   Another answer here proposes dysphemism, but to me it isn't a full fit:  because it doesn't cover the humor aspect. How do I remove repeated elements from ArrayList? I have an ArrayList&lt;String&gt;, and I want to remove repeated strings from it. How can I do this? $\forall$ At the beginning or at the end? I have a set of real numbers $x_1, x_2, \ldots, x_n$ and two functions $f:\mathbb{R} \rightarrow \mathbb{R}$ and $g:\mathbb{R} \rightarrow \mathbb{R}$.  What are the differences between the following statements?   $\forall v \in \{1, \ldots, n\} ~f(x_v) = 0 \vee g(x_v) = 0$ $f(x_v) = 0 \vee g(x_v) = 0 ~\forall v \in \{1, \ldots, n\} ~$ What is the single most influential book every designer should read? What is the single most influential book every designer should read? Where did the disco repos go, or what is going on? VirtualBox error kernel headers I'm with Ubuntu 15.04 and I'm trying to create an emulator (genymotion), but when run virtualbox, i got the error:     Stopping VirtualBox kernel modules ...done.   Uninstalling old VirtualBox DKMS kernel modules ...done.   Trying to register the VirtualBox kernel modules using DKMSError! Your kernel headers for kernel 3.16.0-30-generic cannot be found.   Please install the linux-headers-3.16.0-30-generic package,   or use the --kernelsourcedir option to tell DKMS where it's located    ...failed!     (Failed, trying without DKMS)   Recompiling VirtualBox kernel modules ...failed!     (Look at /var/log/vbox-install.log to find out what went wrong)   I performed   uname -a   And the result is:     Linux douglas 3.16.0-30-generic #40-Ubuntu SMP Mon Jan 12 22:06:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux   Someone help me?Already I uninstalled and installed again. Seeking podcasts related to geospatial technologies? Where can I post my photos and get reviews, comments, and critiques from the community, in order to learn to become a better photographer?  Here is a list of places to get feedback.  Please use answer wikis to comment and rate each one.    As you get more advanced you might also want to try out photo contests, both online and local. I am familiar with the set-theoretical definition of functions.   A function $f : A \rightarrow B$ from a set $A$ to a set $B$ is a subset $f \subseteq A \times B$ of the Cartesian product $A \times B$ such that the following conditions hold:   $\forall a \in A : \exists b \in B : (a,b) \in f$ $\forall a \in A : \forall b, b' \in B : (a,b), (a,b') \in f \rightarrow b=b'$   Is there a purely set-theoretical definition of the function evaluation $f(a)$ for every $a \in A$? I get as far as defining  $f(a) = \{ b \in B : (a,b) \in f \}$ but that defines rather the set of values of a multi-valued function.