Search results with tag "A light bulb"

School Energy Audit - Count Down Your Carbon

4 Problem: You are about to buy a light bulb for $5.50 that has a rated life of 850 hours. You then notice that you can buy a bulb that produces the same light for 18,000 hours, but costs

  School, Energy, Light, Audit, Bulbs, School energy audit, A light bulb