Sensors can gather data quickly and record it accurately

Gathering data is the common feature of practical work in a school science laboratory. Sensor technology can enhance this process in many ways. The data gathered is converted to a digital form and is processed at high speed. The data is subsequently retrieved and processed whenever and however the scientist wants.

The term data-logging is widely used to describe what sensor technology does. This technology can offer greater speed and endurance. Therefore, there is great potential for its use in science experiments. By automating the process of taking measurements, it can reduce the amount of tedious repetitive tasks and increase efficiency.

What can Sensors do?

Sensors gather data quickly and record it accurately, whether in the classroom, science laboratory or on field trips. Sensor technology can store the data in memory, from where it can be retrieved later for processing, analysis and presentation.

Alternatively, sensor technology can display graphs of data in "real time", the graph is constructed as the data is being collected, and the graph is then modified on the screen as the data is processed.

What are the advantages of using Sensors?

• Data-logging enables a shift of emphasis from the gathering of data to the analysis and interpretation of the data.
• Data-logging enables students to repeat experiments several times due to the speed at which data is collected.
• Data-logging allows data to be collected over lengthy periods or to capture events that happen too quickly to be easily measured using conventional equipment.
• Data-logging promotes collaborative learning.
• Data-logging allows students to measure more accurately and display results in a more "professional" manner, whether as charts, graphs or tables.