From ancient sundials tracing shadows to modern atomic clocks measuring time with unparalleled precision, the history of clocks is a testament to humanity's quest for order and accuracy. Dating back to civilizations like the Egyptians and Babylonians, early timekeeping devices were rudimentary yet crucial for coordinating daily activities and tracking celestial events. The mechanical marvels of the Middle Ages, such as water clocks and hourglasses, evolved into intricate mechanical clocks in European monasteries and cities. The Industrial Revolution ushered in a new era of clockmaking, with mass-produced timepieces becoming household staples. In the 20th century, the advent of quartz and atomic clocks revolutionized timekeeping, leading to the synchronization of global time standards. Today, clocks are not only functional but also symbolic, representing punctuality, efficiency, and the relentless march of time itself. As technology advances, the timeless pursuit of keeping time continues to inspire innovation and creativity in the world of horology.
The optimism and financial gains of the Wall Street stock market were shaken on "Black Thursday", October 24, 1929, when share prices on the New York Stock Exchange (NYSE) abruptly fell. On this very day, the crash started with a market loss of 11% of its value at the opening bell on very heavy trading.
Flight over Wall St * 19 April 1997 * John Casti * Magazine issue 2078 ON 29 March 1900, in a dusty seminar room at the Sorbonne in Paris, the renowned mathematician Jules Henri Poincaré was presiding as a student defended a slightly unusua
I. Molina, A. Bueno, A. Heredia, and E. Dominguez. Front Plant Sci, (2023)Molina, Isabel
Bueno, Amauri
Heredia, Antonio
Dominguez, Eva
eng
Editorial
Switzerland
2023/03/07
Front Plant Sci. 2023 Feb 15;14:1154255. doi: 10.3389/fpls.2023.1154255. eCollection 2023..
V. Lemos, S. Guerini, S. Lala, L. Montoro, and J. Rosolen. MICROELECTRONICS JOURNAL, 36 (11, SI):
1020-1022(2005)4th Workshop on Semiconductor Nanodevices and Nanostructured Materials,
Sao Pedro, BRAZIL, MAR 09-13, 2005.