I have a nokia phone charger which has the following specifications:   Input: AC 100-240 V, 50-60 Hz, 100 mA    Output: DC 5.0 V, 350 mA   When I checked the output of the charger with a multimeter it shows 7.7 V. Why is it so? Is it because the charger voltage should be greater than battery voltage (for powering the load and charging battery) or any other reasons?
When I measure a 9V DC wall adapter power supply with a multimeter it shows 11.8V. When connected to my board this voltage lowers to 10V. Is this normal? Should I be afraid of toasting my  supplied board when using this adapter?  Edit: This regulator accepts up to 12V inputs. So that will be no problem. A second "9V" adapter yields 15V to the multimeter. Will this one burn my circuit?
Given this HTML:  &lt;div&gt;foo&lt;/div&gt;&lt;div&gt;bar&lt;/div&gt;&lt;div&gt;baz&lt;/div&gt;   How do you make them display inline like this:     foo bar baz   not like this:     foo   bar   baz Amplitude of an electromagnetic wave containing a single photon Given a light pulse in vacuum containing a single photon with an energy $E=h\nu$, what is the peak value of the electric / magnetic field? Do not disturb mode - but allow certain apps I was drinking iced-water from a drinking glass (made of glass) at a restaurant yesterday when I was taking a drink, I noticed that there is very little ice water coming out and then suddenly, the ice water mixture comes crashing down. With my open mouth overfilled with ice water, my shirt gets wet – I hate when this happens. After drying myself off, I started thinking why this does happen:   How does ice that starts off loose and separated in water fuse together to form one large clump? What causes the ice-water mixture to stop flowing momentarily and then suddenly starting flowing again? Is it that the ice fuses together in the glass and forms one large clump, and then the friction with the edges builds a "dam-like" situation? Or are there individual pieces of ice fusing with the edges of the drinking glass damming-up the ice? The spells that we know about in the Harry Potter world all seem to be either in Latin, derived from Latin, or resembling Latin.  This makes sense for the European World, but there were likely witches and wizards in Africa, Asia, and the Americas.  These cultures would have developed independently, and the magical people in them would likely have still found ways to cast their spells.  Do cultures with languages that did not derive from Latin use the same words and phrases that are related to Latin for their spells?  Or did they have other phrases based on the languages in their cultures? Protagonist becomes the avatar of an alien deity and has to cope with adversary god PHP: Static and non Static functions and Objects Prove that if $X$ and it's closure $\overline X$ are connected and if $X\subset Y \subset \overline X$, show that Y is also connected. Can anyone give me a proof of the statement that if $X$ and its closure $\overline X$ are connected and if $X\subset Y \subset \overline X$, show that Y is also connected?  Thank you. Make rigid body collide with hair particles The Bash Manual says   { list; }        Placing a list of commands between curly braces causes the list to be executed in the current shell context. No subshell is   created. The semicolon (or newline) following list is required.      The braces are reserved words, so they must be separated from the list   by blanks or other shell metacharacters.       The parentheses are operators, and are recognized as separate tokens   by the shell even if they are not separated from the list by   whitespace.   If I remove the semicolon, like this:  $ { date } &gt;    Why does it expect stdin input? A metacharacter is a character that separates words.  The semicolon and whitespace are both "shell metacharacters". Why can't whitespace separate words date and }? Why do we need a semicolon instead of a whitespace for separating the words? I want to know how to format a storage drive from the terminal. Helpful things to provide in the answer would be often used options for commands and base knowledge that one can use to extrapolate future uses. Specifically I would like to know how to format in the different file systems such as NTFS, FAT32, EXT4, etc. Information on how to partition the drive via terminal is also wanted.  I am trying to format a high capacity external hard drive (EHDD) into NTFS - from the terminal.   I know I can use gparted for this as well as other GUI programs, but I still want to now how to do it from the terminal. How about a "Irritable" badge for someone who downvotes often? EDIT : How about a forced comment   dialog...which forces the user's to   comment when they downvote otherwise   they can't....right now it just shows   a popup to suggest posting a   comment...maybe this is little too   strict...but i just find it annoying   when ppl downvote and leave no   comments....   How about having a badge "Irritable" for a user who downvotes over 20 times in a month and then have maybe further "Furious" for over 50 downvotes in a month....just a fun suggestion...since i see people downvote like crazy at times...there should also be a way to downvote a comment i think in addition... Retrieving Wikipedia's coordinate information? I'd like to add icons to my map showing locations which have Wikipedia entries.  The  is a great resource for determining Wiki entries near an XY location, but it has limitations (20km radius, 50 points only) which make it unsuitable for my purposes.  Ideally I need the map to show ALL locations with Wiki entries, so I guess I'll need to download the Wikipedia dump file and parse it for geocoded entries.  Where is this information found in the Wikipedia dump files?  The Wiki database may be downloaded from  but I can't see which file(s) I need to search for the coordinates.  For example, the  includes:  Coordinates:    33°51′35.9″S 151°12′40″E   Where is this found in the dump files? Another way to phrase the question is "how can I determine which Wiki entries are geo-coded?" I'm learning JavaScript and while browsing through the jQuery library I see : (colon) being used a lot. What is this used for in JavaScript?   // Return an array of filtered elements (r) // and the modified expression string (t)    return { r: r, t: t }; Does String theory say that spacetime is not fundamental but should be considered an emergent phenomenon? Does String theory say that spacetime is not fundamental but should be considered an emergent phenomenon?  If so, can quantum mechanics describe the universe at high energies where there is no spacetime?  Schrodinger equation assumes the presence of time dimension. So how can such equations be valid at extremely high energy?  And is it meaningful to do physics if there is no time dimension?  Would the concepts of Hilbert space, wavefunction collapse etc be useful in that case? For all $1 \leq i < j \leq k$, the subtrees $T_i$ and $T_j$ have a vertex in common. Show that $T$ has a vertex which is in all of the $T_i$. Can someone please verify my proof or offer suggestions for improvement? I am aware that there is a similar question elsewhere, but I want help with my proof in particular.     Let $T_1, \ldots, T_k$ be subtrees of a tree $T$ such that for all $1 \leq i &lt; j \leq k$, the trees $T_i$ and $T_j$ have a vertex in common. Show that $T$ has a vertex which is in all of the $T_i$.   Suppose, for the sake of contradiction, that for every vertex $v \in V(T)$, there is a subtree $T'$ in the list $T_1, T_2, \ldots, T_k$ such that $v \notin V(T')$.  Pick $v_1 \in T_1$. There is a subtree $T^{(1)}$ such that $v_1 \notin T^{(1)}$. $T_1$ and $T^{(1)}$ have a vertex $y_1$ in common. Now, there exists a tree $T^{(2)}$ such that $y_1 \notin T^{(2)}$. But now, $T^{(2)}$ and $T^{(1)}$ have a vertex $y_2$ in common. Also, $T_1$ and $T^{(2)}$ have a vertex $y_3$ in common.  There exists a path $p_1$ in $T_1$ from $y_3$ to $y_1$. Also, there is a path $p_2$ in $T^{(1)}$ from $y_1$ to $y_2$ and a path $p_3$ in $T^{(2)}$ from $y_2$ to $y_3$. Note that the path formed by the union of $p_1$ and $p_2$ passes through $y_1$, while $p_3$ does not, since $y_1 \notin T^{(2)}$. Therefore, the union of $p_1, p_2$, and $p_3$ forms a cycle, contradicting the fact that $T$ is a tree. Therefore, it must be the case that there is a vertex $x$ in all of the $T_i$. How can I classify data with the nearest-neighbor algorithm using Python? Global setting of hyphenation for words containing dashes selectively make contact groups silent At work , i would prefer to set my phone in such a way that only the calls from my family group will ring , while all other contact calls should be silent. And later i should be able to switch it back to normal.  In general , there are sound profiles for phones, but the profiles are not specific to a contact or a group, i need a work profile which will set Family - Normal Others - Silent . etc  Is there any app in the market that would help me with this?? What event log should I check for Hardware Changes