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Document Max. Freq Min. Freq
A Dictionary of Greek and Roman biography and mythology (ed. William Smith) 36 36 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 4 4 Browse Search
Pausanias, Description of Greece 3 3 Browse Search
Polybius, Histories 2 2 Browse Search
Sir Richard C. Jebb, Commentary on Sophocles: Antigone 2 2 Browse Search
M. Tullius Cicero, De Officiis: index (ed. Walter Miller) 1 1 Browse Search
Appian, The Foreign Wars (ed. Horace White) 1 1 Browse Search
Strabo, Geography (ed. H.C. Hamilton, Esq., W. Falconer, M.A.) 1 1 Browse Search
Boethius, Consolatio Philosophiae 1 1 Browse Search
Pliny the Elder, The Natural History (ed. John Bostock, M.D., F.R.S., H.T. Riley, Esq., B.A.) 1 1 Browse Search
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Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for 280 BC or search for 280 BC in all documents.

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Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
es, etc. The Greeks had but small rivers, and had no stone bridges until after the Roman conquest. We learn from the Greek historians that bridges were constructed by Cyrus (536 B. C.), Darius (490 B. C.), Xerxes (480 B. C.), and Pyrrhus (280 B. C.). Each of these was a military bridge for a special purpose, and had no permanent character. The bridge of Cyrus, over the Meander, was supported on boats, like those which crossed the Bosphorus and the Hellespont under the orders of his succe planks; and the armies crossed thereon. Cords and posts at the sides afforded some degree of protection. How many bridges were built by Pyrrhus in his expeditions, history does not inform us; but the bridges in his Italian campaigns, about 280 B. C., over the streams emptying into the Adriatic, are mentioned by the Greek historians. The first bridge in Rome was built across the Tiber, 621 B. C., by Ancus Martius, uniting the Janiculum and Mons Aventinus, and was memorable for its defenc
Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
icist, says that the light of the heavenly bodies falling upon our gross atmosphere is bent out of its rectilinear course, which causes these luminaries to appear to rise sooner than they do in reality. Euclid's treatise on optics was about 280 B. C. He is the one who told his royal master Ptolemy Philadelphus, There is no royal road to learning, sir. Ptolemy was the first to measure refractions, and is therefore the founder of an important part of optical science. — Humboldt. The maod whom it shrouds. The most celebrated lighthouse of antiquity is that erected on the island of Pharos, harbor of Alexandria. It was built by the orders of Ptolemy Soter, by the architect Sostratus, and finished under Ptolemy Philadelphus, 280 B. C. The wonderful energy of Alexander's mind seems to have comprehended all at a glance. He visited the little town of Rhacotis, saw his superb city as by a dream of enchantment, his Macedonian mantle covering the ground between the river and Lake