Search results
Results From The WOW.Com Content Network
These were the first monocles worn in England and could be found from the 1830s onwards. The second style, which was developed in the 1890s, was the most elaborate, consisting of a frame with a raised edge-like extension known as the gallery. [2]
A graphical view of the Cosmic Calendar, featuring the months of the year, days of December, and the final minute. The Cosmic Calendar is a method to visualize the chronology of the universe, scaling its current age of 13.8 billion years to a single year in order to help intuit it for pedagogical purposes in science education or popular science.
This is a list of calendars.Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories by cultural sphere or historical period; thus O'Neil (1976) distinguishes the groupings Egyptian calendars (Ancient Egypt), Babylonian calendars (Ancient Mesopotamia), Indian calendars (Hindu and Buddhist traditions of the Indian subcontinent ...
Previously used the Thai lunar calendar. The year numbering followed the Rattanakosin Era until 1912, when it was replaced by the Buddhist era; see Thai solar calendar. Turkey: Ottoman Empire: 1917 15 Feb 1 Mar 13 The year numbering followed the Rumi calendar until 1 Jan 1926, when the Anno Domini era was adopted. Uganda: British Empire: 1893 ...
This resulted in scribes and scholars referring to them as "the first month", "the fifth month", etc. [citation needed] To keep the lunar year of 354 days in step with the solar year of 365.242 days an extra month was added periodically, much like a Gregorian leap year. [10] There were no weeks in the Sumerian calendar. [11]
Watches were worn during the Franco-Prussian War (1870–1871), and by the time of the Boer War (1899–1902), watches had been recognised as a valuable tool. [184] Early models were essentially standard pocket watches fitted to a leather strap, but, by the early 20th century, manufacturers began producing purpose-built wristwatches.
11th century - Sets of hourglasses were maintained by ship's pages to mark the progress of a ship during its voyage; 11th century - Large town clocks were used in Europe to display local time, maintained by hand; 1335 - First known mechanical clock, in Milan; 1502 - Peter Henlein builds the first pocketwatch
All of the logic functions of a calculator had been squeezed into the first "calculator on a chip" integrated circuits (ICs) in 1971, but this was leading edge technology of the time and yields were low and costs were high. Many calculators continued to use two or more ICs, especially the scientific and the programmable ones, into the late 1970s.