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Metronomes are devices that provide a steady beat for practicing or playing music. Learn about the types of metronomes and how metronomes work.

Guitar pedals can create a variety of sound affects. Learn different guitar pedal techniques and types of guitar pedals at HowStuffWorks.

These vending machine pictures take a look at the parts and mechanics of vending machines. See vending machine pictures to get started.

Do you know how backscatter X-ray systems work? Find out how backscatter X-ray systems work in this article from HowStuffWorks.

Gorilla Glass is a scratch- and impact-resistant glass that can be used on cell phones and other gadgets. Learn what makes Gorilla Glass so tough.

Take a look at 2010 pictures and see the top stories and events of the year. See how much you remember about 2010 with 2010 pictures.

Looking for tips for scanning old photos? Visit HowStuffWorks to find 5 tips for scanning old photos.

Want to learn the photography techniques everyone should know? Visit HowStuffWorks to find 5 photography techniques everyone should know.

Looking for tips for photography lighting? Visit HowStuffWorks to find 5 tips for photography lighting.

Looking for tips for still life photography? Visit HowStuffWorks to find 5 tips for still life photography.