In a standard incandescent light bulb, 10 percent of the energy output is converted to light. What makes up the other 90 percent?
Secret Word of the Day
This concept is far from green — it’s the intentional conception, design and production of a product so that it’s useful, functional or popular only for a limited time. What’s the secret word?
IT Acronym Challenge
An LCD monitor uses less power than a CRT monitor. What does LCD stand for?