atomic number 77 การใช้

Early " calculations showed that 77 satellites would be needed, hence the name " Iridium " after the metal with atomic number 77.
They picked the name Iridium because of its scientific significance to the atomic number 77 _ the protons in the nuclei of each iridium atom _ on the Periodic Table of the Elements.
Motorola's dlrs 3.4-billion digital satellite fleet was named after the element iridium with the atomic number 77, the number of satellites that were expected to be launched.
Cross-seam inter-satellite link hand-offs would have to happen very rapidly and cope with large the element with the atomic number 77 and the satellites evoking the Bohr model image of electrons orbiting around the Earth as its nucleus.