4 ms·

Gravity is the storage mechanism. When someone says something is battery-powered, do you start an argument about how that technically isn't correct?

• njharman 14y ago
  Probably yes. Annoying pendants are predictably annoying.
  • pdonis 14y ago
    I think you mean "pedants". ;-)
    • rmrfrmrf 14y ago
      Perhaps he was talking about a particularly obnoxious piece of jewelry.
    • msg 14y ago
      http://en.wikipedia.org/wiki/Muphry%27s_law http://en.wikipedia.org/wiki/Muphry%27s_law
    • deleted 14y ago
      [deleted]
• nuclear_eclipse 14y ago
  Gravity isn't the storage mechanism; the ballast bag is. Gravity is the mechanism used to unleash the stored energy, the same way that the electro-chemical voltage difference between the two components of the battery is the mechanism that unleashes the stored energy in the battery. If anything, it's a ballast-bag-powered light.
  • vinnybhaskar 14y ago
    I'd say you have the most accurate description of when they say "Gravity Powered". While lifting this thing, the energy gets stored and gravity is just a means by which the stored energy is released.