FREE Catholic Classes
An Italian optician and astronomer who lived in Rome during the latter half of the seventeenth century. His brother, Matteo Campani-Alimensis, and he weere experts in grinding and polishing lenses, especially those of great focal length and slight curvature. These lenses were used in long telescopes of considerable power. The astronomer Cassini made his discoveries with these lenses. Campani also made many observations himself. Cassini called his attention to the spots on Jupiter, and he disputed with Eustachio Divini, an Italian optician, the priority of their discovery. His astronomical observations and his descriptions of his telescopes are detailed in the following papers: "Ragguaglio di due nuovi osservazioni, una celeste in ordine alla stella di Saturno, e terrestre l'altra in ordine agl' instrumenti" (Rome, 1664, and again in 1665); "Lettere di G. C. al sig. Giovanni Domenico Cassini intorno alle ombre delle stelle Medicee nel volto di Giove, ed altri nuovi fenomeni celesti scoperti co' suoi occhiali" (Rome, 1666).
His brother, mentioned above, is also noted as a mechanician for his work on clocks. He was a priest in charge of a parish in Rome. Louis XIV of France ordered several long-focus lenses (86, 100, 136 feet respectively) for Cassini, who discovered with their aid additional satellites of Saturn.
FREE Catholic Classes Pick a class, you can learn anything
Help Now >
- Litany of the Blessed Virgin Mary
- Prayer for the Dead
- Unfailing Prayer to St. Anthony
- Act of Contrition
- The Apostles' Creed
- The Angelus
Copyright 2021 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2021 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.
Catholic Online is a Project of Your Catholic Voice Foundation, a Not-for-Profit Corporation. Your Catholic Voice Foundation has been granted a recognition of tax exemption under Section 501(c)(3) of the Internal Revenue Code. Federal Tax Identification Number: 81-0596847. Your gift is tax-deductible as allowed by law.