Tag » Eratosthenes

Learning Critical Thinking Through Astronomy, Week 7

The week began with my expectation that students had watched a YouTube clip showing an excerpt from Carl Sagan’s COSMOS series in which Sagan explains Eratosthenes’ work with shadows. 456 kata lagi


It’s Been Done Before

Zhang Heng (c79 – 139CE)

I have never experienced an earthquake and have no desire to for that matter but it has always surprised me that seismology still appears to be a fairly inexact science. 450 kata lagi


Saringan Eratosthenes

Animasi saringan Eratosthenes dari 1 sampai n=120. Daftar A (kiri) dan daftar B (kanan). Bilangan yang sudah diwarnai artinya sudah dicoret.

Saringan Eratosthenes adalah suatu cara untuk menemukan semua… 377 kata lagi

Eratosthenes and the System of the World

… is the title of Chapter 4 of Peter Thonemann’s book The Hellenistic Age.

The Hellenistic Age is a brief (150 pages) history of Europe and the Near East between the death of Alexander the Great in 323 BCE and the fall of the Ptolemaic kingdom of Egypt on the death of Cleopatra in 30 BCE. 397 kata lagi


Did Adam Know Earth Is Round?

(4 Minute Read)

Is the earth round or flat? How do you know? What did Adam know about it?

Sometimes skeptics call Bible-believers the “Flat Earth Society.” Would Adam be in this club? 1.673 kata lagi


Orpheus-Poet, Philosopher, Sacrificial Victim

Orpheus, the legendary poet, is now well-known for his failed attempt to bring his wife Eurydice back from the underworld (Vergil, Georgics 4.545… 317 kata lagi


"The map is not the territory"*...

Across the board, the Mercator projection of the Earth—which has been our baseline for world maps since the 16th century—skews the actual size of countries so they look bigger (and therefore, more important than they are) when they fall within the middle of the Northern Hemisphere.

341 kata lagi