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How To: Take someone's blood pressure

Everything you need to know about checking a person's blood pressure. Be sure to warn the patient about inflation and deflation. Make sure they remain sitting for 3 minutes. Great details for special need patients like diabetics. This very detailed video is well produced and great picture quality. Be warned, the video is 44 megs in size.

How To: Make iron sulfide with sulfur and iron

In this home-science how-to from Household Hacker, we learn how to create an exothermic reaction by combining sulfur with iron, producing iron sulfide in the process. For all of the details, including step-by-step instructions, as well as to see what happens when these two elements meet, watch this video guide.

How To: Perform the Let's Do Lunch card magic trick

Performing close-up card trick magic in a business environment can be one of the most lucrative envrionements in which to do so. This trick, called Let's Do Lunch, is perfect for just such a setting as it integrates the business cards that your audience are sure to have in abundance. It requires no set-up and only minimal sleight of hand, but produces a great effect. This tutorial video will have ou performing it in no time.

How To: Fake depth of field with lens blur in Photoshop

Want to blow out everything behind a foreground object but don't have $500 to drop on used DSLR camera? Then the filter trick outlined in this 17-minute Photoshop CS4 tutorial is for you. Using lens blur, one can create convincing depth of field reminiscent of a view camera or a wide-aperture lens. This technique is complex and requires some real observation and thought, but can produce beautiful results.

How To: Safely catch a bat

Bats getting caught in houses is a regional problem. In general, bats are scared of humans, but they will bite when they feel cornered. The New York State Health Department produced this video to urge New Yorkers to avoid the risk of rabies and rabies treatment by capturing and submitting for laboratory testing any bat found in their home that may have come in contact with humans or pets.

How To: Create exploding water

Watch this instructional science video to learn how to create hydrogen from water, salt and electricity, for only a few dollars. This is an experiment that produces explosive gases, involves electricity and water and a number of risks so please be careful. Not an experiment to be performed by idiots. Create exploding water with this educational tutorial.

How To: Preserve identity with Photoshop

When you watch the news or a television show where someone doesn't want to be identified, it is common to see the face blurred out or obscured. In this Adobe Photoshop tutorial you will learn how to blur someone's face in an image and preserve or hide their identity. So if you are producing videos or podcasts or need to hide part of an image, this tutorial will show you how to do it in Photoshop.

How To: Balance a GlideCam using a Canon XL2

Watch this quick instructional cinematography video that shows how to balance a Canon XL2 professional HD digital camera on a GlideCam 4000 Pro. Learn how to secure the camera using this handheld camcorder stabilizer to prevent unwanted swaying, shoot fluid traveling shots, and produce professional works.

How To: Understand car battery basics

For most automotive applications a battery needs to supply a lot of current for a short period of time to turn over the engine and get the car started. With the engine running, the car's alternator produces all the power the car needs. Thin plates inside a starting battery increase the surface area and produce this relative burst of energy. Thicker plates in a deep cycle battery provide a steady amount of current over a long period of time. Deep cycle batteries excel in reserve capacity (RC),...

How To: Bend and overblow notes on the harmonica

Learn how to bend and overblow notes on the harmonica with this tutorial. Note bending is a technique that is used to change the pitch of a note and reach notes that are not on the diatonic harmonica. Overblowing is a technique used to produce a different pitch by changing the direction of the wind. Watch this how to video and you can produce these techniques on the harmonica.

News: Undergrad Student Scientist Made Beer Good for You — and Your Gut Microbes — by Adding Probiotics

When Chan Mei Zhi Alcine chose her senior project, she thought outside the box by thinking inside the bottle. Along with a research team at her university, she found a way to combine health and enjoyment, while meeting a challenge not so definitively met before in alcoholic beverages. She and a research team at her university claim they've created the world's first probiotic sour beer.