| Rats, mice, and other rodents communicate not just in the range of sound frequencies humans can hear (approximately 20-23,000 Hz), but in ultrasonic frequencies as high as 91,000 Hz. There is even evidence that some species, such as the brown rat, use ultrasound for echolocation.  | |
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Today's How-To Geek Articles | |
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Today's Tech Term
Impact Printer | |
| An Impact Printer is a printer that functions by banging a head/needle against a ribbon, thus transferring the appropriate characters onto the paper. | |
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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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| Increasingly sophisticated phones and data-hungry applications make it easier than ever to blow through your cellphone plan’s data cap…and incur nasty overage charges. Read on as we show you how to manage your data use. | |
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| Photoshop isn't just a photography app; it's a powerful design tool. Opening a single image is easy, but what happens if you want to put together a poster with multiple different images? | |
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| Most security cameras come with night vision, which allow them to still see things even if it’s pitch black outside. But how does it work? | |
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| Facebook is the world's most popular social network, and with that comes a load of problems. Not only do you have to deal with all the regular trolls you find online, but crazy exes, stalkers, and fake profiles looking to con you are all permanent fixtures. | |
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| If you want your Nest Cam to store video recordings in the cloud so that you can retrieve them later on, you have to sign up for the company’s Nest Aware subscription service. But is it worth buying in the long run? | |
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| You probably bought a Roku to watch services like Netflix, Hulu, or Amazon. Maybe you’ll even check out some free video channels. But you probably don’t have any interest renting or buying movies from Fandango. | |
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| McAfee, like most other modern antivirus programs, doesn’t stay out of your way. It installs browser extensions and shows various alert messages you might not want to see. If McAfee came with your PC, you may regularly see messages that your subscription is expired. Here’s how to get rid of that noise. | |
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| When setting indents or tabs on the ruler in Microsoft Word, you can see approximate measurements using the markings on the ruler. However, if you need more detailed measurements, there is an easy way to get this information. | |
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| The DualShock 4’s light bar is a neat thing. It works with many games to mimic what’s happening on the screen—in The Last of Us, for example, it will change colors as your health degrades, and turn red as you die. It’s a little thing, but it’s cool. The downside is that it’s also a battery hog, causing the controller to die much quicker than most of us would like. Thankfully, you can dim it. | |
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| Apple is staking their reputation on ensuring the data it collects from you remains private. How? By using something called “Differential Privacy.” | |
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| Mechanical keyboards have legendary longevity, but like any long-lived tool, that doesn’t mean they don’t require occasional replacement parts. Let’s take a well-loved mechanical keyboard and give it a brand new set of keys. | |
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