Everything is relative, my dear Bruno!

Giordano Bruno
Portrait of Giordano Bruno (nineteenth century, after an engraving published in the Book of the President, 1578) – image in public domain via Wikimedia Commons.

Even if special1A. Einstein, 1905. Zur Elektrodynamik bewegter Körper, Annalen der Physik, n° 17, pp. 891 – 921. It can be read on line. An English version translated by George Barker Jeffery is available on line. and general relativity2A. Einstein, 1916. Die Grundlage der allgemeinen Relativitätstheorie, Annalen der Physik, n° 49, pp. 769 – 822. It can be read on line. An English version translated by Alfred Engel can be read on line. theories were introduced by Albert Einstein (1879 – 1955), the principle of relativity were introduced in Physics much earlier. It is called Galilean relativity and were introduced by … Giordano Bruno (1548 – 1600).

Of course, if this first form of physical relativity is qualified “Galilean,” it is because Galileo had something to do in its formulation. The introduction of this principle is one of the main elements of the epistemological revolution to which I referred earlier. This article is therefore a continuation of the series on the history of science that I started. It will also be the occasion, once again, to introduce some concepts that will be useful for future popularisation articles to come.

Continue reading Everything is relative, my dear Bruno!

Notes

Notes
1 A. Einstein, 1905. Zur Elektrodynamik bewegter Körper, Annalen der Physik, n° 17, pp. 891 – 921. It can be read on line. An English version translated by George Barker Jeffery is available on line.
2 A. Einstein, 1916. Die Grundlage der allgemeinen Relativitätstheorie, Annalen der Physik, n° 49, pp. 769 – 822. It can be read on line. An English version translated by Alfred Engel can be read on line.