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Computers take over test tubes

 

Computers are the way of the future for chemists.

Industrial and research labs use the computer to acquire information and control data, and most equipment used by professional chemists incorporates computers.

That means chemistry students will have to face up to a world of computerized instrumentation.

At Université de Sherbrooke, chemistry labs are already in the 21st century. There, the Department of Chemistry has equipped two labs with computers to automate most physical chemistry experiments and many instrumental experiments so that students can get to know the systems and software they'll use in their future careers. An added advantage: computers give students greater independence in their work.

It took Professor Jacques Gigučre and Jean-René Martin, coordinator of laboratories, 12 years to complete this ambitious project. They had to interface equipment to computers and write suitable programs to allow students to perform 12 different experiments.

The computer has now become the accepted working and teaching tool at Université de Sherbrooke. Students look on handwritten reports as archaic, work directly on the computer, and do all their experiments at the keyboard.

The meters and transducers of pressure, temperature and light intensity are connected directly to the computers. Students control the data collection process, view the data, store it on disks, and ultimately treat the results graphicafly, statistically or mathematically using software programs such as Quattro, Lotus 1,2,3 or locally developed statistical programs.

After the experiment, students have nearly all the tables, graphs and calculations they need to write their final reports.

This method is fast, effective and economical. It replaces the slow and tedious visual observations that up to now were the only way to collect data. Errors are reduced. Accuracy is increased by a factor of anywhere from 10 to 100. The speed and power of the computer save time, and that makes more time for direct interaction between students and professors.

In fact, students and professors see the computer as an ideal colleague. It's an untiring collaborator, able to handle mechanical and repetitive work quickly, effectively and cheaply.

Université de Sherbrooke is one of the few universities in North America to use computers in this way. The Chemistry Department, a leader in the field, is producing a book and computer disks so that colleagues at other universities can implement the Sherbrooke system in their own labs.

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