Forum for discussing local and world politics and issues. All views are welcomed. Let your opinions be heard on current news and politics.
All standard guidelines apply to this board, No Flaming, No Taunting, No Foul Language,No sexual innuendos,etc..
As politics can be a volatile subject, please consider how you would feel if your comment were directed toward yourself.
Any post deemed to be in violation of guidelines will be deleted or edited without warning or notification. Any continued misbehavior will result in a ban or hidden status, so please play nice!!!
*"Moderators are here for a reason. If a moderator (or Global Moderator or Fencer) requests that a discussion on a certain subject to cease - for whatever reason - please respect these wishes. Failure to do so may result in being hidden, or banned."
Wind, solar, and even hydrocarbon are all 'free' energy, in the sense that you can produce more energy from them than what you put in to extract it.
This is the same with a bird (or even a glider). You need some energy to first reach that height, but then using the energy in the thermal (potential) convert it into motion (kinetic) to theoretically stay airborne indefinitely.
However, this is not the same 'free' as being able to extract more energy than that which is available, something only a perpetual energy machine can do, i.e. create energy out of nothing, something truely free and unencumbered! However, your bird is encumbered, its height and speed is limited by the energy available in the thermal.
(verstecken) Wenn du unter vielen eine ältere Mitteilung suchst, klicke auf "zeige Mitteilungen dieses Users" im Profil rechts des Namens. (konec) (zeige alle Tips)