255
Encyclopedia
Year 255 was a common year starting on Monday
(link will display the full calendar) of the Julian calendar
. At the time, it was known as the Year of the Consulship of Valerianus and Gallienus (or, less frequently, year 1008 Ab urbe condita
). The denomination 255 for this year has been used since the early medieval period, when the Anno Domini
calendar era
became the prevalent method in Europe for naming years.
Common year starting on Monday
This is the calendar for any common year starting on Monday, January 1 . Examples: Gregorian year 1990, 2001, 2007 and 2018or Julian year 1918 ....
(link will display the full calendar) of the Julian calendar
Julian calendar
The Julian calendar began in 45 BC as a reform of the Roman calendar by Julius Caesar. It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year .The Julian calendar has a regular year of 365 days divided into 12 months...
. At the time, it was known as the Year of the Consulship of Valerianus and Gallienus (or, less frequently, year 1008 Ab urbe condita
Ab urbe condita
Ab urbe condita is Latin for "from the founding of the City ", traditionally set in 753 BC. AUC is a year-numbering system used by some ancient Roman historians to identify particular Roman years...
). The denomination 255 for this year has been used since the early medieval period, when the Anno Domini
Anno Domini
and Before Christ are designations used to label or number years used with the Julian and Gregorian calendars....
calendar era
Calendar era
A calendar era is the year numbering system used by a calendar. For example, the Gregorian calendar numbers its years in the Western Christian era . The instant, date, or year from which time is marked is called the epoch of the era...
became the prevalent method in Europe for naming years.
Science
- Ma JunMa JunMa Jun , style name Deheng , was a Chinese mechanical engineer and government official during the Three Kingdoms era of China...
, a Chinese mechanical engineer from Cao WeiCao WeiCao Wei was one of the states that competed for control of China during the Three Kingdoms period. With the capital at Luoyang, the state was established by Cao Pi in 220, based upon the foundations that his father Cao Cao laid...
, invents the South Pointing ChariotSouth Pointing ChariotThe south-pointing chariot was an ancient Chinese two-wheeled vehicle that carried a movable pointer to indicate the south, no matter how the chariot turned. Usually, the pointer took the form of a doll or figure with an outstretched arm...
, a path-finding directional compassCompassA compass is a navigational instrument that shows directions in a frame of reference that is stationary relative to the surface of the earth. The frame of reference defines the four cardinal directions – north, south, east, and west. Intermediate directions are also defined...
vehicle that uses a differential gear, not magnetics.
Deaths
- Guo HuaiGuo HuaiGuo Huai , style name Boji , was a military general of Cao Wei during the Three Kingdoms era of Chinese history. He started his career during the late Han Dynasty under the warlord Cao Cao. During Cao Pi's reign, Guo rose up the ranks and became a grand marshal under Sima Yi...
, general of the Kingdom of Wei (b. 187187Year 187 was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Quintius and Aelianus...
) - Sima ShiSima ShiSima Shi , style name Ziyuan , was a military general and regent of Cao Wei during the Three Kingdoms era of Chinese history. In 249, he assisted his father Sima Yi in overthrowing the emperor Cao Fang's regent Cao Shuang, allowing the Sima family to become paramount authority in the state, and he...
, son of Sima YiSima YiSima Yi was a general and politician of the state of Cao Wei during the Three Kingdoms era of Chinese history. He is perhaps best known for defending Wei from Zhuge Liang's Northern Expeditions...
and general of WeiCao WeiCao Wei was one of the states that competed for control of China during the Three Kingdoms period. With the capital at Luoyang, the state was established by Cao Pi in 220, based upon the foundations that his father Cao Cao laid...
(b. 208208Year 208 was a leap year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelius and Geta...
) - Wuqiu Jian, general of the Kingdom of Wei
- Zhang YiZhang Yi (Boqi)Zhang Yi , style name Boqi, was a military general of Shu Han during the Three Kingdoms era of China. He was instrumental in pacifying the barbarian peoples who rebelled against Shu. He was slain by Xu Zhi during one of Jiang Wei's Northern Expeditions while distracting the enemy from pursuing...
, general of ShuShu HanShu Han was one of the three states competing for control of China during the Three Kingdoms period, after the fall of the Han Dynasty. The state was based on areas around Sichuan, which was then known as Shu... - Zou JingZou JingZou Jing was a colonel serving under the warlord Liu Yan during the late Han Dynasty period of Chinese history. When faced with the huge Yellow Turban rebel army, Zou Jing counseled Liu Yan to use volunteer forces to help defend the people....