The two files https://commons.wikimedia.org/wiki/File:Infrared_spectrum_of_sunlight_by_Fizeau_and_Foucault_1847.PNG
and
https://commons.wikimedia.org/wiki/File:Fizeau_Foucault-First_Photo_of_Sun_1845.jpg
are referenced by
https://en.wikipedia.org/wiki/Fizeau%E2%80%93Foucault_apparatus
but their usage is not listed on their Commons description page. The link is "coloned-out" without placement of an actual image on the page.
In other words:
They worked together on such projects as using the [[Daguerreotype]] process to take [[:File:ARAGO Francois Astronomie Populaire T2 djvu 0201 Fig163.png|images of the Sun]] between 1843 and 1845<ref name=Hughes2012/> and characterizing [[:File:Infrared spectrum of sunlight by Fizeau and Foucault 1847.PNG|absorption bands in the infrared spectrum of sunlight]] in 1847.
The file https://commons.wikimedia.org/wiki/File:Train_and_Embankment_Thought_Experiment_And_Its_Inverse.gif
is referenced by
https://en.wikipedia.org/wiki/Einstein%27s_thought_experiments#Trains,_embankments,_and_lightning_flashes
but its usage is not listed on its Commons description page. The link is "coloned-out" without placement of an actual image on the page.
In other words:
An animation of a [[:File:Train and Embankment Thought Experiment And Its Inverse.gif|modified train-and-embankment thought experiment and its inverse is available here.]]