Just to point out that the wind-up radio was invented by Trevor Bayliss. He lives on Eel Pie Island in Twickenham (south west London, and about half a mile from where I live!).
I have read discussion of various wind-up equipment some time ago in a Yachting magazine. A boat is a good example of a place where one does not want to be reliant on batteries for electrical power. A wind-up emergency radio is a Very Good Idea. Also, being able to wind up the computer used for navigation is good.
As to power, perhaps laptop vendors need to think again about cramming vast power into laptops. Current batteries would run a typical laptop from 5 years ago for ages.
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Just to point out that the wind-up radio was invented by Trevor Bayliss. He lives on Eel Pie Island in Twickenham (south west London, and about half a mile from where I live!).
I have read discussion of various wind-up equipment some time ago in a Yachting magazine. A boat is a good example of a place where one does not want to be reliant on batteries for electrical power. A wind-up emergency radio is a Very Good Idea. Also, being able to wind up the computer used for navigation is good.
As to power, perhaps laptop vendors need to think again about cramming vast power into laptops. Current batteries would run a typical laptop from 5 years ago for ages.