Ripping a CD is just simply copying the music off a CD and converting it into an audio file like an MP3, WMA, AAC, WAV. To rip a CD means to take it from your CD and put it into your computer's memory. That way you can play your music on your computer without having to put the CDs into your disc drive all the time. To rip a CD just call up your Windows Media Player.
Part of the Nanotechnology glossary: Quantum theory is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the atomic and subatomic level. The nature and behavior of matter and energy at that level is sometimes referred to as quantum physics and quantum mechanics. In 1900, physicist Max Planck presented his quantum theory to the German Physical Society.
This article is a non-technical introduction to the subject. For the main encyclopedia article, see Quantum mechanics. Quantum mechanics is the science of the very small. It explains the behaviour of matter and its interactions with energy on the scale of atoms and subatomic particles. By contrast, classical physics only explains matter and energy on a scale familiar to human experience, including the behaviour of astronomical bodies such as the Moon.