Thursday, October 21, 2010

Velveeta And Rotel Pasta From Commercial

2 - What is the power, what is the energy


"The breeze stirred the yellow leaves of the trees,
blurring his eyes seemed possible to observe the wind."

Discovering the meaning of energy (or ki, or prana, or etc..), I will analyze and consider in terms of language, "scientific", the value of the previous post (i Links are highlighted in red) who inspired me the initial reflection.

One of the basic classes of engineering efficiency, riguarda la definizione e la conseguente importante differenziazione fra potenza ed energia.

La potenza è una sorta di intensità (istantanea)  (ad esempio W, cavalli…)

L’energia è la sua somma nel tempo (ad esempio Wh, calorie…)

Pensate ad un getto d’acqua da un rubinetto (Potenza), e al bicchiere riempito (Energia).

Per approfondire leggermente il discorso, possiamo analizzare il modo in cui si misura una potenza, e ciò è possibile introducendo la definizione di lavoro. Il lavoro rappresenta una “fatica” (power presupposes a resistance) : push a car 10 meters is different than push it to 50 meters, that will do two jobs ("labors") for the two different situations.

Power is therefore a work (effort) done in the past: push a car 10 meters in 1 hour, which is different push a car 10 feet in a minute, clearly in the latter case I will have a power higher (greater fatigue: not win because he is powerful, but to be powerful ).

But here comes the concept of energy, it is said that for the same end, the effort is greater, this will clearly depend also on the starting point. energy (potential energy) physically, it is the ability of a system to do work, I stress the word capacity (the power is responsible for what happened, the energy of what is yet to happen ) .

both power and energy depend on time, but the time required to measure a power is a finite time, a time to reach a final goal (10 meters of the machine), a time to which algebraically split work (closed system), while the time required to measure an energy that emanates (kinetic energy) is a potentially infinite time (I could keep open indefinitely the tap water), a time to multiply an output (open system) .

What this means to increase "capacity"?
capacity in the definition of energy is something that does not require either a strength or a need to be translated into action, and in terms of human actions does not, in my opinion, even an 'evidence manifests in a superificiale.
How then can "feel" and "see"?
Perhaps paradoxically tool to increase our awareness is to understand, consider, accept, and then turn overcome the resistance that we have here and now (implicitly acquiring power, but without stopping power).

(?)

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