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36th century BC: 35th century BC: 34th century BC: 33rd century BC: 32nd century BC: 31st century BC: 3rd millennium BC · 3000–2001 BC 30th century BC: 29th century BC: 28th century BC: 27th century BC: 26th century BC: 25th century BC: 24th century BC: 23rd century BC: 22nd century BC: 21st century BC: 2nd millennium BC · 2000–1001 BC ...
In contrast, "BC" is always placed after the year number (for example: 70 BC but AD 70), which preserves syntactic order. The abbreviation "AD" is also widely used after the number of a century or millennium , as in "fourth century AD" or "second millennium AD" (although conservative usage formerly rejected such expressions). [ 7 ]
[31] Niagara Falls will have eroded the remaining 32 km to Lake Erie and will therefore cease to exist. [32] The many glacial lakes of the Canadian Shield will have been erased by post-glacial rebound and erosion. [33] 50,000 Due to lunar tides decelerating the Earth's rotation, a day on Earth is expected to be one SI second longer than it is ...
In the Gregorian system, the Nth century AD starts in the year (N-1)*100+1 and ends in year N*100, so for example, the 16th century begins on January 1, 1501 and ends December 31, 1600. However, year order is reversed in the BC era, so the Nth century BC begins in the year N*100 BC and ends in (N-1)*100+1 BC, so for example the third century BC ...
AD 31 was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Tiberius and Sejanus (or, less frequently, year 784 Ab urbe condita ).
1st century AD: The aeolipile, a simple steam turbine is recorded by Hero of Alexandria. [289] 1st century AD: The first use of respiratory protective equipment is documented by Pliny the Elder (c. 23 AD –79) using animal bladder skins to protect workers in Roman mines from red lead oxide dust. [290] 1st century AD: Oldest surviving wine. [291]
The slogan became so popular that Woodbury used it until the 1940s. Albert Lasker said the ad's use of sex appeal made it one of three great landmarks in advertising history. It was ranked 31st on Advertising Age's list of the top 100 campaigns of the 20th century. [52]
Surviving late Roman examples of descriptiones include Ausonius's Ordo Nobilium Urbium, a fourth-century Latin poem that briefly describes thirteen cities including Milan and Bordeaux. [1] [3] Rutilius Namatianus's De reditu suo is a longer poem dating from the early fifth century that includes a section praising Rome. [3]