Y todos estos cálculos suponen una tranformación ideal, 100% de eficiencia, el imán, la bobina, los cables, el rozamiento con el aire... nada de eso existe, y resulta que esta gente ha sido capaz de levantarse casi 300k para este proyecto??
Será porqué no todos son unos nay-sayers. Y la oportunidad de negocio realmente existe... sino no habría gente comprando
La empresa que lo hace, y lo que ponen en su web:
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Help make it happen for GravityLight, lighting for the developing countries
deciwatt.org is our initiative to try to make this happen through our existing network of clients, and connections to groups who share our hopes for GravityLight.
therefore.com has over
20 years of experience in designing and developing handheld computing and communication products for a host of pioneers including Psion, Toshiba, NEC, TomTom, Inmarsat, ICO, Sepura, Racal Acoustics, Voller energy etc. We work at the heart of an industry which is driven by Moore's law. However there is another less known parallel trend, called Koomey's law.
Koomey's law describes a long-term trend in the history of computing hardware. The number of computations per joule of energy dissipated has been doubling approximately every 1.57 years. This trend has been remarkably stable since the 1950s (R2 of over 98%) and has actually been somewhat faster than Moore’s law. Jonathan Koomey articulated the trend as amows: “at a fixed computing load, the amount of battery you need will fall by a factor of two every year and a half.”[1]
Many would say that this trend just keeps pace with the increasing sophistication of computing. However it also has a flip side. It means that relatively simple devices progressively need less energy to run. Similar efficiencies have been seen in radio communication too, opening up the possibility of low cost, off-grid computing and communication equipment.
Our vision has evolved from two self-funded projects exploring low power opportunities and solutions for the developing world. The first was the Talking Stick project, presented to Cambridge Wireless as a concept to bring communication to the unconnected. The second is GravityLight, an off-line project which is now at a working prototype stage, seeking funding via Indiegogo.
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Por otro lado, es un prototipo, no perdamos de vista el contexto. La cosa puede ir a más o quedar en nada... pero una cosa ya han demostrado: el producto tiene más tirón del que inicialmente pensaban.
Para que shishi servía un foro dónde sólo se podía postear 140 carácteres máximo, cuando actualmente se puden postear cientos de miles... que idea más ridícula!. Pues de esa cosa de idea nació una billonaria empresa llamada Twitter. (por poner un ejemplo)
Tus necesidades no son las mismas que las de otras personas. Dónde unos ven algo que no tiene una función aparente, otros le ven uso inmediato.
Nunca hay que subestimar las ideas aparentemente "sencillas". Si queda en nada pues por lo menos lo han intentado...