The ultra bright short-arc lamps in specialized IMAX projectors are filled with xenon gas and pressurized at 367 PSI (approximately 25 atmospheres). As a result, projectionists are required to wear protective body armor any time they handle or replace one of the lamps in order to avoid serious injury if a lamp is damaged (and “explodes” as a result). | | | Want to Change Your Email Preferences? | |
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Today's How-To Geek Articles | |
By popular request, we're including a quick list of the daily articles at the top of the daily email as well as the regular format near the bottom. | | AFTP (short for Anonymous File Transfer Protocol, a.k.a. Anonymous FTP) is a network protocol that allows individuals to transfer and/or download “public” files without a need to identify themselves, or in many cases, the need for login credentials at all (some setups use very basic and common generic login credentials that are well-known by all visitors). | | 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. | |
How to Add a Backdrop to Your Snapchat Snap Snapchat seems to be doubling down on its mixed-reality features to stay ahead of Instagram. They've added a new feature where you can add a weird backdrop to your Snaps. Here's how to use it. | |
How to Reverse Look Up a Phone Number You get a call from a phone number you don’t recognize. There’s a good chance it’s just a scammer, but it could also be a legitimate business or a person you know. Rather than answering the phone or calling the number back, there are a few quick ways you can identify just who it was who tried to call you. | |
How to Get the Most Out of Your Nest Thermostat The Nest Thermostat is one of the most-loved smart thermostats on the market, but are you getting the most out of all its great features? Here are some things you might be missing out on. | |
How to Empty the macOS Trash on Your External Drives You know that flash drive full of kitten pictures you carry at all times? Of course you do: we all have one. Sometimes you want to free up some space on your kitten drive, so you drag a couple gigs of old pictures to the Trash on your Mac. | |
How to Clean Your Nintendo Switch Your Nintendo Switch is probably filthy. Since the Switch pulls double duty as a shared family console and a handheld gaming console, it has extra opportunity to get dirty fingers all over it. Here’s how to clean all the parts of your Switch without getting it wet or ruining it. | |
How to Set Screen Time Limits for Kids on an Xbox One The Xbox One now has a “Screen Time” feature that allows you to control how much your children can use the console. For example, you could restrict game time to only between 3 PM and 9 PM, but with a maximum of two hours. Different settings can be applied to different child accounts and for different days of the week. | |
How to Sideload Apps on Android Just because an app isn't available from the Google Play Store doesn't mean it's not available at all—you can effectively install non-Play Store apps on any Android phone, tablet, or other device by enabling one simple toggle. This practice is called "sideloading." | |
How to Delete a Photo from Your Instagram Story Instagram's Story feature is great, but like with all Story features, it's easy to let muscle memory take over and accidentally share a photo with everyone who follows you rather than the person you meant to send it to. I've made this mistake more than once. Most of the time, all that anyone will see is a weirdly out of context photo, but sometimes, things can be a bit more sensitive. Whatever happens, here's how to delete a photo from your Instagram Story. | |
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