How To: Experiment with pressure using a vacuum
In this video Dr. Carlson does several experiments to illustrate how a vacuum works. A vacuum is created when all the air is removed from an object.
In this video Dr. Carlson does several experiments to illustrate how a vacuum works. A vacuum is created when all the air is removed from an object.
With summer just around the corner and the family spending more time outside insects such as chiggers can become an annoying hindrance to outdoor activities. Luckily, there are ways to deal with the little buggers with a little effort and some key items.
It's important to know who you're dealing with after hacking your target's MacBook. Getting remote access is simple, but covertly gathering information about the user and their system can be a challenge.
Although lots of the bigger hotel chains are lessening the restrictions they put on their room TVs, some smaller ones are still taking measures to prevent you from plugging in computers or streaming devices into an HDMI port. However, there are a few steps you can take to bypass these restrictions and watch your own media in a hotel that has restricted TVs.
Never sewed before? Not a problem. This DIY ribbon flower, which can be made in any color of your choosing, is incredibly easy and only requires a few basic stitches to complete.
Hook up your TiVo, Xbox and other television-based electronics to a single HDMI port. All you need is a switcher, which you can buy easily for around fourteen dollars. Then hook it up, and have multiple input devices attached to your TV!
If you have a trekking pole then you, like Nintendo Wii owners everywhere, have probably wondered at and then spurned the wrist straps attached to your device. Don't do it! This video will teach you how to use your trekking pole strap correctly to reduce the strain on your hand while hiking, allowing you to go on for longer more comfortably.
This tutorial demonstrates the correct way to solder wires to a piezoelectric sensor. First, the stripped wires are tinned (coated with a thin layer of solder). Then the piezoelectric sensor, held in a small adjustable clip, is heated briefly, and two drops of solder placed where the wires are to be attached. Finally, the tinned ends of the wires are placed in contact with the soldered areas of the piezoelectric sensor, and the solder heated to fix the wires in place.
The Department of Biological Sciences at the University of Alberta brings you this video tutorial specifically relevant to your student laboratory courses, specifically microbiology. If you're a student at any school of biology, this information will be helpful for learning how to use Sephadex gel filtration for chromatography in the lab.
As the clove hitch knot is adjustable and slipper, it can be useful attached to a carabiner, allowing the load to move fluidly up and down the rope. However, the clove hitch is not particularly useful or advisable as a securing knot. Watch this video survival training tutorial and learn how to tie a clove hitch knot on a carabiner.
It's not a dead cat on a pole, it's a boom microphone. The primary component is the boom pole, which is attached to the microphone. This sound and film making video tutorial will teach you to properly use a boom mic as well as support a boom pole.
A subtly sweet melon, cantaloupe is a refreshing summertime snack. See the different ways to cut a cantaloupe, from chunks to slices. You know your cantaloupe is ripe when it: yields to slight pressure, has yellowish skin, has a fresh aroma at the end where the stem was attached, has a healthy outer rind free of tears or cuts. Be sure to refrigerate the sliced melon in plastic bags or airtight containers within 2 hours of cutting it.
Our dog has tons of energy and always wants to play. However, play time can be exhausting to the humans of the house. We found out a few months ago that the dog loves to play ‘chase the red dot.' Boredom leads to creativity, so we attached a laser pointer to her head with a bandana and small piece of tape. This kept her continuously occupied until we removed it after 20 minutes. I assume you could try this with a cat if you were daring enough – good luck with that. Caution: Laser pointers (ev...
In photography, bokeh refers to the blurry or out-of-focus parts of a shot. Bokeh can be good or bad—it all depends on how you use it. There are tons of ways to create a bokeh effect, whether you go the traditional route with lens filters, digital with Photoshop, or even from your iPhone. With filters, you can use the blurred spaces to produce different shapes and colors. If you have a DSLR and want to experiment with bokeh, this tutorial by Chris Perez over on Apartment Therapy will show you...
There's no shortage of uses for steel wool, but the majority of them tend to be on the pyromaniacal side, like DIY fireworks. This trick by Mike Mikkelson is no different—it uses a homemade reusable "wool cage" to create a spinning vortex of light, like in the photo below. You can do this with just a piece of steel wool on a cable, but Michael wanted something he could easily reuse no matter how many shots he took, so he built a small cage to house the steel wool out of chicken wire, a small ...
Most of us have traded our desktop systems for laptops, tablets, and mobile devices, meaning there's a lot of outdated hardware sitting in attics. Want to give your old computer a new purpose? Matthew Chappee turned his iMac G4 into an HDTV using the guide by Dremel Junkie. One thing to note before you take on this project yourself is that if you want to use it to watch cable, you'll need a converter box to get around the MPAA's HDCP restriction. But, a converter box is considerably less expe...
You can carve a pumpkin that smokes, has an LED display, or even one with the President's face on it, but if you want your jack-o'-lantern to really stand out—make it sing the Ghostbusters theme.
Portal, the popular game from Valve, has been critically acclaimed since its release in 2007. Its unique gameplay and humorous storyline is the reason for its popularity amongst nerds everywhere. This has also spawned a large community in cosplay and prop design. The most popular aspect of the game has to be the awesome portal gun. The gun creates companion portals on almost any surface that allow the player to jump form place to place with ease and also allows you to move heavy objects with ...
I know, "Steamdown" conjures images of a hoedown, but "Steampunk prop breakdown" is a bit of a mouthful, I thought.
One of the most annoying things about summer is mowing the lawn. Depending on how big your yard is, it can mean spending hours out in the hot sun while you could be doing something a lot more fun like watching the Olympics or making giant soap bubbles. Reclaim your summer with this remote control lawn mower that does all the hard work for you.
Drug-resistant bacteria have made curing some infections challenging, if not nearly impossible. By 2050, it's estimated that 10 million people will be dying annually from infections with antibiotic-resistant organisms.
If you've grown bored of day-to-day hacking and need a new toy to experiment with, we've compiled a list of gadgets to help you take password cracking and wireless hacking to the next level. If you're not a white hat or pentester yourself but have one to shop for, whether for a birthday, Christmas present, or other gift-giving reason, these also make great gift ideas.
In this tutorial, we learn how to crack open Alaskan king crab legs. First, you will take the crab legs and let them cool off so you can handle them. After this, find the bottom piece that was attached to the body. What you want to do is always start from the tip and bend it backwards. What you will see is the tendons come out. If you don't do this, you will end up chewing on them when you eat the meat. From here, you will bend back towards the middle of the leg and then you can remove the me...
This prank is about as simple as it gets. All you need is some kind of tray, some flour, string, and a part of your house where there is a pull-chord light switch (most likely the basement). Just remove the light switch chord and dangle your new string in its place, attached to your container of flour above. When your victim tries to turn on the light, bam! They'll be hit with the flour.
This video shows us how to install a ceramic soap dish in our bathroom shower. In this demonstration the instructor already had a slot in the shower tiles for the soap dish to go. Attach a long strip of masking tape on the edge of the soap dish. Mix some grout and place this on the part of the soap dish you are attaching. Be generous with the amount so you know it will stay. Place the soap dish in the slots and use the tape that you attached to be extra security that your dish will not fall. ...
Gloved hands show how to perform several veterinary suture ties. This video shows the one hand tie with the right hand. It repeats the tie several times in slow motion to allow you to follow it and manage to copy the suture and learn to do the hand tie yourself.
This video on making broccoli slaw was provided by The Frugal Chef. In this video, the frugal chef stated that this was a good way to get kids to eat broccoli. She used a prepackaged bag of broccoli slaw. She stated that you could buy a bag of this broccoli slaw at about any store. She bought hers at Trader Joes for about $1.99. She put her prepackaged broccoli slaw into a large bowl. She then added a 1/2 cup chopped walnuts, a medium red apple that had been chopped up (skin still attached) a...
For more complicated pottery pieces, it's not possible to make the entire pot at once, but rather make two pieces to be attached later. This video pottery making tutorial shows how to attach a vase neck onto a pot. See as the two pieces are scored and sewn together. Learn how to attach a neck onto pot made out of ceramic clay by watching this instructional video.
While hackers know and love the Raspberry Pi, many don't know of its cheaper cousin, the microcontroller. Unlike a Pi, which can be used more or less like a regular computer, microcontrollers like the Wi-Fi connected ESP8266 require some necessary programming skill to master. In this guide, we'll build an Arduino program from scratch and explain the code structure in a way anyone can understand.
Users on Instagram have taken the app's new "Questions" sticker and run with it — it's tough to find a story in your feed that doesn't proudly sport "Ask me a question." However, it appears there's some confusion when it comes to the anonymity of your answers to these questions. News flash — your username is attached to every response.
Not that long ago, Snapchat was an app with only one purpose — to send and receive self-destructing picture messages. The app has clearly grown since, adding many features that both adhere to its original function as well as ignore it. One of these new features is Context Cards. You may have heard about them, but what exactly are they?
A cool experiment for kids and parents that allows you to make edible Kool-Aid slime. The video attached gives the step-by-step process and shows how fun it is to create the final product.
Logan's Run is one of my favorite movies of all time. The dialog is cheesy, the set design and special effects are wonky, and the main villain looks like he was conceived and built by an eighth grader in shop class—oh, and his name is Box.
If you're entirely new to smartphones, Android's share menu can seem like a foreign concept at first glance. In reality, it's one of Android's most central and unique features, and with a little experience, it can make your smartphone a lot easier to use.
bObi has a mop cloth and trailing bar that can be used any time you want her to wash tile or hardwood flooring.
Every smartphone manufacturer is susceptible to defects, but after dropping a good chunk of change on a shiny new device, we as consumers have little tolerance for such issues. We want our gadgets to be perfect in every regard, so even the tiniest flaw is irksome.
Being part of the wild frontier is amazing. It doesn't take much to blow minds of first time mixed reality users — merely placing a canned hologram in the room is enough. However, once that childlike wonder fades, we need to add more substance to create lasting impressions.
One of the truly beautiful things about the HoloLens is its completely untethered, the-world-is-your-oyster freedom. This, paired with the ability to view your real surroundings while wearing the device, allows for some incredibly interesting uses. One particular use is triggering events when a user enters a specific location in a physical space. Think of it as a futuristic automatic door.
Magic Leap shows up in the weirdest places. Last week, right at the start of World Cup fever, for some reason, the Magic Leap One appeared on a Brazilian television show.
Apple didn't invent the concept of photos with videos embedded (that credit goes to HTC and their Zoe feature), but they sure did popularize this functionality when they came out with Live Photos. If you're jealous of iPhone users, you certainly don't need to be — there are several great ways to recreate Live Photos on Android.