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There are around five billion mobile phones in use around the world todayThis lamp is powered by the small solar panel connected to it. As well as providing light, power from this panel can be used to charge mobile phones. This object has been chosen to reflect our ingenuity, and the challenges we face, in the twenty-first century. The kit uses a range of new materials and technologies, including silicon-chip technology, which can also be found in computers and mobile phones. Here it is used in the solar photovoltaic cell, which converts sunlight into electricity. Exposing this cell to eight hours of bright sunshine provides up to 100 hours of lamp light.

How is this technology changing lives?

There are currently 1.6 billion people across the world without access to an electrical grid. In these areas, objects such as this allow people to study, work and socialise outside daylight hours, vastly improving the quality of many lives. Additionally, households using solar energy rather than kerosene lamps are able to avoid the risk of fire and the damage to health that kerosene can cause. Once purchased, this kit costs very little to run, making it a very efficient option for many people living in the world's poorest countries.

There are around five billion mobile phones in use around the world today