Recent contributions:

4 Apr 2011

• Made this change to the answer of Is there anyway to get 120V 60hz from a 240V 50hz power supply
  Appliance Voltage and Travel Issues | Electrical Engineering  •   4 Apr 2011 20:58
• Made this change to the answer of Is there anyway to get 120V 60hz from a 240V 50hz power supply
  Appliance Voltage and Travel Issues | Electrical Engineering  •   4 Apr 2011 20:55

13 Jul 2009

• Made this change to the answer of How much does one gallon of water weigh
  Weight and Mass | Metric System  •  13 Jul 2009 15:17

8 Oct 2007

• Made this change to the answer of How much does one gallon of water weigh
  Weight and Mass | Metric System  •   8 Oct 2007 22:14