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How To: Use imaginary numbers and quadratic equations

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

How To: Solve the 4x4 Rubik's Cube Revenge in seven steps

Solving the Rubik's Revenge Cube is similar in concept to solving the original Rubik's Cube. You still match colors and replace one piece with another, but there is an added level of complexity. Where the classic Rubik's Cube has fixed centers that determine the color of each face, every piece on the Rubik's Revenge Cube is fully moveable. It is also much more fragile than the original Rubiks Cube therefore requires greater care and precision. If you want to more... just watch and learn.

How To: Use Rubik's Cube notation and terminology

Since its invention in 1974, the Rubik's Cube has become a favorite pastime among geeks, puzzle lovers, and other similarly unique individuals. It is currently available in four basic flavors; Rubik's Mini, Rubik's Cube, Rubiks Revenge, and Professor's Cube. This video tutorial will cover the basic terminology and notation used in solutions for each.

How To: Use the JVC GY-DV5100U professional camcorder

Check out this cinematography tutorial video that demonstrates how to use the GY-DV5100U Professional DV Camcorder. JVC has upgraded the camera's features and digital processing circuits to meet the requirements of a growing number of broadcasters looking for cost effective alternatives to the over-priced tapeless solutions of other manufacturers. This video is great for cinematographers and filmmaking aficionados alike. Learn all the functions and settings on the GY-DV5100U with this instruc...

How To: Use the JVC DR-DV5000 Direct To Edit

Check out this cinematography tutorial video that demonstrates how to use your professional JVC DR-DV5000 Direct to Edit (DTE). The DR-DV5000 is designed to mount directly to your JVC GY-DV5100 and turn it into a DV-Disk recording solution. It becomes possible to shoot directly to disk or simultaneously to tape and disk. The DTE capture files are a mirror image of what's recorded. Learn everything there is to know about the DR-DV5000 with this instructional cinematography video and start usin...

How To: Redial Busy Phone Lines Automatically on Your iPhone or Android Phone

Whether you're calling the unemployment office, a popular radio contest, or any other phone line that gets super busy, having to recall the number manually is a pain. Whatever you do, however, don't punch in the same digits over again and again — our smartphones can help do it for us, saving our time (and sanity).

How To: Get Android's Smart Lock Feature on Your iPhone

As great as passcode and biometric security features like Face ID are for preventing unwanted access, they aren't needed 100% of the time. When you're at home with a locked door between you and anyone you wouldn't trust with your phone, they really only serve to slow you down. Android has long had a solution for this, but a new Cydia tweak has now brought a similar solution to iPhones.

News: Mastercard, Qualcomm-Powered ODG Smartglasses Use Iris Authentication for AR Shopping

As the level of data being generated grows exponentially, past the Information Age and into the coming Hyper-Information Age of immersive computing — as resistant as many of us are to the idea — personal data security is becoming a necessary consideration in our everyday lives. Recognizing this, Mastercard, Qualcomm, and Osterhout Design Group have teamed up to show what secure shopping could look like in the very near future with iris authentication.

Spice Rack Explosives: How to Make Gunpowder with Salt & Sugar

The best chemistry experiments are those you can perform with items already laying around your house. With only some sugar, salt substitute and an instant cold pack, you can make your very own gunpowder! Being able to make homemade gunpowder without a trip to the store can be a lifesaver, no matter if it's just for testing out a Civil War-era musket, blowing up stubborn tree stumps, or preparing for battle when imperialists overrun your country.

How To: Make TCPO (for making glow sticks)

How to make TCPO or bis(2,4,6-trichlorophenyl) oxalate, used in glow stick reactions. WARNING: This procedure should only be performed by, or under the direct supervision of, an experienced chemist. Please refer to the material safety data sheets of all chemicals for their hazards. Synthesis must be performed in a fumehood.