![In 1849, French physicist Armand Fizeau used this method to achieve the first terrestrial measurement of the speed of light Stock Photo - Alamy In 1849, French physicist Armand Fizeau used this method to achieve the first terrestrial measurement of the speed of light Stock Photo - Alamy](https://c8.alamy.com/comp/BCE750/in-1849-french-physicist-armand-fizeau-used-this-method-to-achieve-BCE750.jpg)
In 1849, French physicist Armand Fizeau used this method to achieve the first terrestrial measurement of the speed of light Stock Photo - Alamy
![Determining the Speed of Light (1676-1983): An Internalist Study in the Sociology of Science | Cairn International Edition Determining the Speed of Light (1676-1983): An Internalist Study in the Sociology of Science | Cairn International Edition](https://www.cairn-int.info/loadimg.php?FILE=E_ANSO/E_ANSO_132/E_ANSO_132_0359/E_ANSO_132_0359_img006.jpg)
Determining the Speed of Light (1676-1983): An Internalist Study in the Sociology of Science | Cairn International Edition
![How would it be possible to measure the speed of light let alone light year distances, doesn't this seem oddly impossible? - Quora How would it be possible to measure the speed of light let alone light year distances, doesn't this seem oddly impossible? - Quora](https://qph.fs.quoracdn.net/main-qimg-4cbd012f5029b9e2f2e2d52b55642e6c.webp)
How would it be possible to measure the speed of light let alone light year distances, doesn't this seem oddly impossible? - Quora
![Diagram showing the method of using the eclipses of Jupiter's satellites to measure the velocity of light. The first person to use this method was Ole Rømer. Ole Rømer (1644-1710) a Danish Diagram showing the method of using the eclipses of Jupiter's satellites to measure the velocity of light. The first person to use this method was Ole Rømer. Ole Rømer (1644-1710) a Danish](https://c8.alamy.com/comp/MR3W11/diagram-showing-the-method-of-using-the-eclipses-of-jupiters-satellites-to-measure-the-velocity-of-light-the-first-person-to-use-this-method-was-ole-rmer-ole-rmer-1644-1710-a-danish-astronomer-who-in-1676-made-the-first-quantitative-measurements-of-the-speed-of-light-dated-19th-century-MR3W11.jpg)