This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
HCO rot spec. en Rotational spectrum of HCO at using pgopher own Brianphelan Check categories December en Formaldehyde Formaldehyde Infrared spectroscopy
Page 2023 Free-images.com. All images are Public Domain