The great astronomer of ancient times who summarized and improved...in a book now called The Almagest) is Ptolemy This is further explained below.
<h3>Who is Ptolemy?</h3>
Generally, Claudius Ptolemy was a Greek mathematician, astronomer, and geographer who lived in the second century CE and is best known for proposing the geocentric model of the cosmos, which was used to explain planetary and stellar movements for the next thousand years.
In conclusion, Ptolemy, the ancient world's preeminent astronomer, compiled and refined a system of circles inside circles to describe the complexities of planetary motion, publishing his work in what is now known as The Almagest.
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It is malleable
Explanation:
The property that makes metals such as sterling silver the best to create hammered earrings is their malleability.
All metals have a unique and fascinating property of being malleable. They can be carved into any of shape. When hammered they simply draw out and retain their long range ordering of their crystal lattice.
This is made possible by the presence of metallic bonding between the atoms.
- The bulk of the physical properties of metals can be attributed the metallic bonds in them.
- Metals have large sea of electrons in them.
- In forming metallic bonds, there is an attraction between the positive nuclei of all the closely packed atoms in the lattice and the electron cloud jointly formed by all the atoms by loosing their outermost shell electrons.
- Metals like silver have low ionization energy.
- When they are hammered, they spread out the energy from the hammering.
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<span>Viscosity, the more a fluid resists flow, the more viscous the flow. For example, honey is a very viscous fluid, while water is not as viscous. Hope this helps(:</span>
