Control Computer, Other Devices With The Eyes

With the GT3D device which costs about £50 (N 12,500.00), people with nervous disorder can now use their eyes to control the computer.

The GT3D device is made up of two fast video game console cameras that are positioned, outside of the line of vision to a pair of glasses. The cameras constantly take pictures of the eye, working out where the pupil is pointing, and from this a set of calibrations can be used to work out exactly where a person is looking on the screen.

The device makes it possible for the user to type, click on and pick objects on the screen, as well as play video games.

It is also being developed to make possible control of computerized wheelchair, and other human aid to cater for people with varying health challenges.

Wind Powered Car

Safer Small Scale Lead Acid Battery Recycling

Lead should be handled with very great care to avoid the health risk of lead poisoning. Small scale lead acid battery recycling exposes people involved in the business to this hazard. Considerable research has been carried out to reduce the amount of lead one is exposed to at that small scale battery recycling level.

Dr R Vasant Kumar, University Senior Lecturer in Materials Science and Metallurgy at Trinity Hall, Cambridge developed a low cost process that uses only eight percent (8%) of energy required when compared to using conventional method and produces fewer toxic sulphur dioxide gas and lead dust. (N:B Protective wears should be worn when handling exposed batteries).

Using Dr R Vasant’s method, the paste from spent lead acid batteries is melted and mixed with citric acid producing crystallites that are heated to about 350°C, yielding lead and lead oxide for use in the manufacture of new lead battery paste.