Measuring gas temperature using infrared laser technology in a glass enclosure raises questions about the gas's infrared absorption characteristics and the safety of using such devices. Infrared non-contact thermometers are suggested as a potential alternative, but they typically measure surface temperatures rather than gas directly. For hydrogen gas, which does not absorb or emit infrared radiation effectively, using an IR laser may not yield accurate results. The transparency of the glass to infrared light is also crucial for any measurement to be valid. Overall, the discussion highlights the challenges of accurately measuring gas temperature with infrared technology, particularly for low-density gases like hydrogen.
