Gravity powered lamp to be tested in Asia and Africa

Published July 26, 2013
GravityLight will be mass-produced  next year. – Photo courtesy Indiegogo
GravityLight will be mass-produced next year. – Photo courtesy Indiegogo

GravityLight, a five dollar alternate to a kerosene lamp, is ready for field testing after four years of development. Invented by Martin Riddiford and Jim Reeves, the lamp takes three minutes to stay illuminated for almost half an hour, drawing its energy from weight and gravity.

The pineapple shaped LED light is simply charged with a bag filled with sand or gravel weighing 25 pounds. The bag, which is hung from a cord in the system, is charged if it is raised to six feet. When released freely, the cord moves in slow motion just like a rope slipping on a pulley, providing light for thirty minutes. The intensity of light can be adjusted and more energy can be obtained for a shorter period.

Two terminals on the front can also be used as a generator to recharge other devices such as radio and batteries.

Talking to scidev.net, Reeves said that thousands of prototypes will be sent to mainly Africa and Asia for testing and mass production of GravityLight will start early next year.

The prototypes will be tested in all weather and harsh conditions in developing countries.

GravityLight will aim to replace other energy sources such as solar panels, kerosene lamps and solar lanterns, which are expensive and require more energy input. Kerosene lamps, which are used by nearly a billion people according to the International Energy Agency (IEA), have an adverse impact on health and income of poverty-stricken families, especially in Africa and Asia. An alternate such as the one provided by Reeves and Riddiford will be reliable, low-cost and eco-friendly.

Opinion

Inequality virus
25 Jan 2021

Inequality virus

An Oxfam report calls for radical changes to the economic system.

Editorial

25 Jan 2021

Where the buck stops

THERE’S no getting around it: the buck stops with the prime minister. The Islamabad High Court said as much on...
25 Jan 2021

PPP’s plan?

THE PDM faces a fresh crisis as the PPP takes a conspicuously soft position on the long march. While the PDM talks ...
25 Jan 2021

Forward guidance

THE State Bank has taken the unusual step of issuing a forward guidance in its latest monetary policy statement to...
Updated 24 Jan 2021

Delayed olive branch

THE PTI government has finally mustered up sufficient political prudence to extend an olive branch to the opposition...
24 Jan 2021

Bureaucracy reform

WHILE the intention behind the endeavour may be lauded, the civil service reform package unveiled by the government...
24 Jan 2021

Minority rights

ON Thursday, the United Nations General Assembly adopted a resolution to safeguard religious sites around the world,...