The calculator is also available in five muted colors to better match your desk decor ... new position of the solar panel will affect its exposure to indoor lighting and power generation ...

One of those is a Swedish startup called Exeger, which is behind the world's first solar-powered headphones ... solar tech added to watches and pocket calculators. But a lot has changed since ...

Solar calculators were such a routine part of math class from the mid-1980s onward that they barely warrant any surprise or wonder today, even though a mostly solar-powered future is still decades ...

Escape the office and break free from the grid with the Kanz Field Power Desk – a compact, mobile, free-standing solar-powered desk that lets you work anywhere you like! The unit comes complete ...

Iwas once given a combined tape measure and solar powered calculator like this one. I thought it would be handy for working out the area of a room. I measured the length, and entered it into the ...