Scientific Discipline Search Results

How To: Fast on Yom Kippur

Giving up food and drink is an important part of this Jewish holiday, the Day of Atonement, because it helps focus the mind on repentance. Stay strong mentally and physically with these tips.

How To: Make an edible plant cell model for biology class

Science fairs are some of the most creative moments during the elementary school period. Not only are you able to research a topic of interest, but you also have try to find various ways in which to showyour scientific results. In this case, you'll find out how to make an edible plant cell model for an easy science fair project of for biology class. It's easy to do and will surely attract the attention of your teacher and others. Enjoy!

How To: Perform ballistics comparisons

In this scientific video tutorial, undergraduate students in a forensic chemistry lab demonstrate how to use a comparison microscope for bullet and bullet casing comparisons, and color developments tests for impression marking enhancement (such as for filed-off serial numbers). Learn how to perform ballistics comparisons! Just like in CSI.

How To: Streak an Agar Plate

Check out this video tutorial on how to streak an agar plate. What's an agar plate? Well, an agar plate is a sterile Petri dish that contains a growth medium (typically agar plus nutrients) used to culture microorganisms. Selective growth compounds may also be added to the media, such as antibiotics.

How To: Explore the Kennedy Space Center Online with Google Street View

With all the excitement over the Mars rover landing this weekend, you might also want to know that Google has gotten their cameras into the Kennedy Space Center for their largest collection of Street View imagery to date. In total, the explorable facility totals 6,000 panoramic views. The views include the space shuttle launch pad, the towering Vehicle Assembly Building, and a up-close and personal view of a space shuttle's main engine.

How To: Take Free Online Courses for Real College Credit

The internet is a great place to find information for pretty much anything you can think of. So why shouldn't it be a place for official higher learning? I'm not talking about a course in Wikipedia or SparkNotes, but real colleges offering real college courses completely online. And guess what—it's FREE.

How To: Make a permanent, reusable glow stick

Make a reusable glow stick, glow-in-the-dark-style! Imagine, you'll never have to buy one of those ChemLite's again, because you can reuse this homemade glow stick over and over again. This video tutorial will show you how to make a permanent, reusable glow stick. The materials in this experiment are simple: epoxy resin, straw, and some phosphor powder.

How To: Convert scientific notation to standard algebra form

Learn how to convert from scientific notation to standard form by watching the above math video. To change a number from scientific notation to standard form, move the decimal point to the left (if the exponent of ten is a negative number), or to the right (if the exponent is positive). You should move the point as many times as the exponent indicates. Do not write the power of ten anymore.

How To: Firewalk across hot coals

Check out this tutorial video to learn how to fire walk. Michael Shermer, publisher of Skeptic magazine and monthly columnist for Scientific American, tries his hand at firewalking barefoot across 1000-degree red hot coals and doesn't get burned. Dr. Shermer provides a scientific explanation for the mysterious phenomenon.