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allychevalier

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Articles

  • Previous Theories and the Ultimate Cause of the Pioneer Anomaly

    The Pioneer anomaly, a subtle but unexpected deceleration observed on many unmanned spacecraft, puzzled scientists for decades. Here's an overview of what the Pioneer anomaly is, some of the explanations previously proposed for its existence, as well...
    Published on  January 23, 2013 to Space

  • What Are Elliptical Galaxies?

    Elliptical galaxies. While describing the simple shape of a galaxy doesn't seem to tell you much, you'd be surprised by the amount of information that astronomers have gleaned based on their form! This article discusses the origin of elliptical...
    Published on  September 28, 2011 to Space

  • How to Make Your Own DIY Ring Flash

    Ring flashes are one of the most expensive pieces of equipment for a photographer to buy, yet they don't have to be. Here's a guide on how to make your own quick and easy DIY ring flash from materials from around the house.
    Published on  July 8, 2011 to Digital Photography

  • Open Source Software for Business

    Businesses are always trying to find out a way to manage things better, and increasingly, they're turning to open source software to do so. But what does open source software have to offer businesses, precisely? This article provides an overview...
    Published on  July 6, 2011 to Linux Platform

  • Are Aviation GPS Devices Illegal?

    GPS is a potentially powerful tool for almost any field you can think of—not least of which civilian aviation. However, there are some legal issues surrounding aviation GPS devices which are important for anyone interested in purchasing one to see...
    Published on  July 6, 2011 to GPS Navigation Systems

  • GPS Use In Commercial Aviation

    Commercial aviation has long relied on radar technology for navigation, but slowly, it's being replaced by GPS. This article outlines the course of the change in the US, as well as the advantages that GPS brings over the old radar system.
    Published on  June 30, 2011 to GPS Navigation Systems

  • What Causes GPS Signal To Degrade?

    There is precious little more frustrating than a degraded GPS signal, especially when it comes to the seemingly simple task of navigation. But what causes GPS signal degradation, and how can you avoid it? This article examines some causes, from the...
    Published on  June 30, 2011 to GPS Navigation Systems

  • Discover Mars For Yourself Through THEMIS

    While scientists are busily making their discoveries, everyday people often end up feeling like there's nothing they can do to participate. However, there's a new feature out there that allows absolutely anyone, regardless of their background...
    Published on  June 30, 2011 to Space

  • Airplane Travel & Your Camera

    There are a lot of concerns associated with bringing your camera along on the airplane—primarily, going through airport security. This article goes through the concerns and shows what you need to worry about and how to take care of it.
    Published on  June 27, 2011 to Digital Photography

  • What is Pixel Vignetting?

    Vignetting can be either a curse or a blessing to photographers, but either way, it's inevitable. This article describes the causes of one type of vignetting that you can't avoid, pixel vignetting, and why there isn't much you can do about...
    Published on  June 27, 2011 to Digital Photography

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