The Department of Physics, in collaboration with the Continuing Education Unit at the College of Science, University of Baghdad, organized a lecture titled “Gas Sensor.” The lecture aimed to introduce the gas sensor, an electronic tool that detects the presence of a specific gas in the air or measures its concentration. The sensor contains a material whose electrical resistance changes according to the gas concentration around it, resulting in a voltage difference that enables the sensor to identify the type and concentration of the gas. The lecture, presented by Assistant Professor Dr. Fouad Tariq Ibrahim, highlighted the importance of the gas sensor and its uses, depending on the type of gas the sensor can recognize and the type of sensing material used. It emphasized its use in measuring changes in the concentration of toxic gases to maintain a safe system that prevents unexpected disasters, detects leaks of harmful gases, and monitors air quality in factories and offices. The lecture also pointed out the existence of several types of sensors for measuring various gases, such as oxygen, carbon dioxide, nitrogen, methane, and others.
