hipparchus in English

noun
1
( circa 170–after 126 bc ) , Greek astronomer and geographer. He is best known for his discovery of the precession of the equinoxes and is credited with the invention of trigonometry.

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Below are sample sentences containing the word "hipparchus" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "hipparchus", or refer to the context using the word "hipparchus" in the English Dictionary.

1. In the Almagest, Ptolemy adopted Hipparchus' solar model, which consisted of a simple eccentric deferent.

2. Hipparchus employed the system to plot the minor epicycles of the sun and moon only.

3. Hipparchus of Nicaea (second century), outstanding astronomer and founder of trigonometry, classified stars into magnitudes according to brightness, a system basically still in use.

4. We show above that Hipparchus' and Ptolemy 's arguments are based on an implicit false premise - that one would feel the motion.

5. The relations that Ptolemy attributes to Hipparchus in Almagest IX.3 had all already been used in predictions found on Babylonian clay tablets.

6. It would not be surprising if this calculation had been originally developed by Hipparchus himself, as he was a primary source for the Almagest.

7. Ptolemy mentions (Almagest V.14) that he used a similar instrument as Hipparchus, called dioptra, to measure the apparent diameter of the Sun and Moon.

8. By 130 AD, Ptolemy, influenced by Hipparchus and the Babylonians, was using a symbol for 0 (a small circle with a long overbar) within a sexagesimal numeral system otherwise using alphabetic Greek numerals.

9. Hipparchus and Geminus recognized it as a distinct constellation, but astronomer Ptolemy did not include it among his 48 constellations in the Almagest; he considered it part of Leo, and called it Plokamos.

10. The Hellenistic astronomer Ptolemy, in Almagest IV 2, discusses the duration and ratios of several periods related to the Moon, as known to "ancient astronomers" and "the Chaldeans" and improved by Hipparchus.

11. According to a line in Plutarch's Table Talk, Hipparchus showed that the number of "affirmative compound propositions" that can be made from ten simple propositions is 103049 and that the number of negative compound propositions that can be made from ten simple propositions is 310952.