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Figure 1. Disk structures: (A) Track (B) Geometrical sector (C) Track sector (D) Cluster A disk drive track is a circular path on the surface of a disk or diskette on which information is magnetically recorded and from which recorded information is read.
8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially.Such an alignment occurs approximately every six months, during the eclipse season in its new moon phase, when the Moon's orbital plane is closest to the plane of Earth's orbit. [1]
By the end of World War II, there were a total of 69 battalions (daidan) in Java, Madura, and Bali (around 37,000 men) and Sumatra (approximately 20,000 men). On 17 August 1945, the day after the Proclamation of Indonesian Independence , the Japanese ordered the PETA daidan to surrender and hand over their weapons, which most of them did.
Geospatial Information Agency (Indonesian: Badan Informasi Geospasial, abbreviation: BIG) is the national mapping agency of Indonesia.BIG was formerly named National Coordinator for Survey and Mapping Agency (Indonesian: Badan Koordinasi Survei dan Pemetaan Nasional, abbreviation: Bakosurtanal).
The solar mass (M ☉) is a standard unit of mass in astronomy, equal to approximately 2 × 10 30 kg (2 nonillion kilograms in US short scale). It is approximately equal to the mass of the Sun.
Astronomical symbols are abstract pictorial symbols used to represent astronomical objects, theoretical constructs and observational events in European astronomy.The earliest forms of these symbols appear in Greek papyrus texts of late antiquity.
The poles of astronomical bodies are determined based on their axis of rotation in relation to the celestial poles of the celestial sphere. Astronomical bodies include stars, planets, dwarf planets and small Solar System bodies such as comets and minor planets (e.g., asteroids), as well as natural satellites and minor-planet moons.