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1d
comment Energy of an Analog Signal
Basically, life's too short to let negative energy influence you.
1d
revised Temperature to make oceans evaporate
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2d
revised Temperature to make oceans evaporate
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2d
comment Why are dishwasher washed glasses “squeaky clean”?
Also, dishwashers are able to achieve higher temperatures than hand washing, so are able to dissolve grease & soap much faster.
Nov
25
comment Current lagging voltage by more then 90 degrees
That's correct. Power flow is effectively reversed, as in regenerative breaking, where a generator is used to provide a retarding torque whilst re-charging a battery.
Nov
25
answered Temperature to make oceans evaporate
Nov
25
comment Why does iron sink in molten iron instead of floating?
@PhilH My mistake... it's the other way round *now fixed
Nov
25
revised Why does iron sink in molten iron instead of floating?
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Nov
25
revised Why does a conservative force return the work done against it by a body to that body?
general spelling corrections
Nov
25
suggested suggested edit on Why does a conservative force return the work done against it by a body to that body?
Nov
25
comment Why does iron sink in molten iron instead of floating?
That is, iron conforms with the 'general' observation of thermal expansion of matter (ie: matter 'generally' expands at higher temperatures), even at the solid-liquid phase transition. Water, particularly near the ice-liquid temperature range between 0 and 4 degrees C, does not.
Nov
25
comment Why does iron sink in molten iron instead of floating?
What I meant by 'regular' was in respect to density varying inversely to temperature.
Nov
25
revised Why does iron sink in molten iron instead of floating?
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Nov
25
answered Why does iron sink in molten iron instead of floating?
Nov
25
awarded  Nice Answer
Nov
25
comment Why can we inflate the balloon?
@Jim the number of pores per unit area is difficult to define for latex, since the extreme 'elasticity' of the material means the 'pore density' varies consirably with elongation.
Nov
25
revised Why can we inflate the balloon?
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Nov
24
revised Why can we inflate the balloon?
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Nov
24
revised Why can we inflate the balloon?
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Nov
24
answered Why can we inflate the balloon?