The works of that late most excellent philosopher and astronomer, Sir George Wharton, bar. collected into one volume / by John Gadbvry ...
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Title
The works of that late most excellent philosopher and astronomer, Sir George Wharton, bar. collected into one volume / by John Gadbvry ...
Author
Wharton, George, Sir, 1617-1681.
Publication
London :: Printed by H. H. for John Leigh ...,
1683.
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"The works of that late most excellent philosopher and astronomer, Sir George Wharton, bar. collected into one volume / by John Gadbvry ..." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A65576.0001.001. University of Michigan Library Digital Collections. Accessed June 15, 2024.
Pages
7. The Apparent Magnitude of the Tail, or Beard of Comets —
DO for the most part increase in a few days after their first appearance, and at the end decrease. The Tail of which Aristotle saw, Anno 341. be∣fore Christ, was 60 degrees in length.
The Tail of that in the 135 Year before Christ, was exceeding great, as Seneca (Lib. 7. Nat. qq. cap. 15.) relates, Attila regnante initio Cometes apparuerit modicus: Deinde sustulit se diffuditque & usque in Ae∣quinoctialem circulum venit, ita ut illam plagam Coeli, cui lactea nomen est, in immensum extensus aequaret. In the Reign (saith he) of Attalus, there at first ap∣peared a small Comet, afterward it mounted and
dilated it self on high, and came even to the Equi∣noctial Circle, so immensly extended, as that it equal∣lized that portion of Heaven called the Via Lactea.
The Tail of that in 1533. was observed by Apian to be 15 degrees. That in 1538. Thirty. The Tail of the Comet in 1577. by Tycho, Twenty two. That in 1585. not above a Span in appearance; and that other, 1590. ten degrees. But the Tail of the Comet in 1618. was more notable for Magnitude, and variety of Magnitude than all the rest; for that in the same Nights it appeared of different lengths, not only to sundry Observers in several places, but to the same Observer in one and the same place; now shorter, anon longer, by the quavering extension of its Beams. For Millerus found it, Novemb. 26. when it first ap∣peared, 90 degrees: Kepler two days after. Thirty. December the 4th. it was 21 degrees; the seventh day 57 degrees: The Ninth Cysatus found it 75 de∣grees; and Kepler the same day, but 70 degrees. The tenth day Longomontanus observed it to be 104 de∣grees. The 14. Rhodius found it 50 or 60 de∣grees; and Blanchinus on the same day but 36 de∣grees.
But the Tails of those Comets that appeared in the Years of Christ, 70. 400. 1472 . and l543. were ob∣served to reach even to the Earth.
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