something i didn't realize was a problem until like the last year is that when i say "infrared", half of the people reading it will go "yep, that's right, near infrared in the range of 750 nm to 1500 nm that shows up on silicon sensors" and the other half will go "yep, that's right, far infrared in the range of 1500 nm to 1 mm that shows up on microbolometers" (qualifying it as "NIR" or "LWIR" does not help very much in my experience)