| The color of the little piece of glass (glass bubble filled with liquid alcohol) found inside the sprinkler heads of fire sprinkler systems indicates the temperature at which it bursts (and activates the sprinkler): orange is the lowest temperature and black is the highest.  | |
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Today's Tech Term
Permalink | |
| A Permalink (short for Permanent Link) is a URL that serves as a permanent and direct link to a specific web page, blog post, or other online media. Permalinks are especially useful with many blogging services where regular, permanent links are not created by default due to how the publishing platform is set up. | |
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| This section contains what we're reading from around the web, along with commentary from our editors. Think of it like your daily digest of the most interesting things online. | |
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| With AirPlay, you can mirror your iPhone or iPad’s screen on your Mac or your Apple TV. But what if you have a Windows PC? We'll show you a free tool that makes this easy. | |
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| On the desktop, apps like Dropbox and Google Drive sync folders between your devices. But on your phone, it only gives you access to your cloud storage. An app called FolderSync lets you sync files and folders to and from your Android phone, just like Dropbox does on the desktop. | |
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| Microsoft killed off the much-loved Windows Media Center years ago, which is bad enough for home theater PC enthusiasts. But it gets worse: you’ve also got a now-useless MCE remote gathering dust somewhere…or do you? | |
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| A proxy connects you to a remote computer and a VPN connects you to a remote computer so they must be, more or less, the same thing, right? Not exactly. Let’s look at when might want to use each, and why proxies are a poor substitute for VPNs. | |
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| Sony’s PlayStation 4 has a social media-style dashboard. Your friends can view your PlayStation activity along with your real name, and your account may be discoverable to your Facebook friends if you’ve linked your PlayStation 4 with Facebook. | |
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| Screenshots are easy to take in OS X. You can either use Command+Shift+3 or Command+Shift+4 to take full screen screenshots or crosshair screenshots, respectively. By default, these shots are saved to the desktop, but there’s an easy way to change that. | |
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| For the most part, Windows Update works silently in the background. It downloads updates automatically, installs the ones it can, and saves others to install when you restart Windows. Sometimes, though, an update installation fails and that can prevent other updates from being installed, too. | |
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| The status bar at the bottom of Excel’s window can tell you all kinds of interesting information, such as whether Num Lock is on or off, the page number, and the average of numbers in selected cells. Even better, you can easily customize the status bar to show just the information you want. | |
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| Google’s Nexus devices are supposed to receive timely updates, but the staggered rollout means it can take weeks for devices to receive over-the-air (OTA) updates. Luckily, there’s a geekier way to install the latest version of Android. | |
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| Last month, Linux Mint’s website was hacked, and a modified ISO was put up for download that included a backdoor. While the problem was fixed quickly, it demonstrates the importance of checking Linux ISO files you download before running and installing them. Here’s how. | |
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