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On August 15, 1877, while discussing the prospects for the telephone use in correspondence with the president of the Pittsburgh Telegraph Company, Thomas Edison suggested using "Hello" as a telephone greeting.
On September 25, 1926, Henry Ford announced an 8-hour, 5-day work week. The regulation of working hours was the first brick in the construction of the labor law.
On September 25, 1820, the French physicist, mathematician and chemist André-Marie Ampere demonstrated an experiment on the interaction between magnetic fields arising around electric currents to the Academy of Sciences.
On January 12, 1938, Wilhelm König, an Austrian archaeologist, found an unusual object while excavating near Baghdad. It was a light clay vessel about 15 cm high. The vessel had a copper cylinder inside containing a fully oxidized iron rod fixed with a bitumen plug. The upper end of the rod rising 1 cm above the plug was covered with a greyish completely oxidized layer of metal which reminded lead...
On November 30, in 1876, Pavel Yablochkov received the world’s first patent for his electric candle – considered a first-ever application of the transformer.
Johann Philipp Reis, a German physicist and inventor, believed that electricity can be transmitted at a distance, like light, without material conductors, and set up several experiments on his theory. The idea of transmitting sound using electricity was born when Reis studied the organs of hearing...
Thomas Edison made the first public demonstration of his incandescent light bulb on December 31, 1879 in Menlo Park.
The first workable transistor was demostrated on December 24, 1947. Its creators were employees of Bell Telephone Laboratories company. Their names are now known to the whole world, these are scientists-physicists Walter Brattain, William Shockley and John Bardeen.
On October 2, 1608 Hans Lippershey (a German-born Dutch inventor, optician and eyeglass maker, most likely creator of the telescope) presented his invention to the Dutch government. It was the prototype of the modern mirror telescope.
Om November 8, 1895 Wilhelm Conrad Rцntgen discovered X-rays. This happened unexpectedly. Late in the evening when the scientist was going to leave the laboratory and had already turned off the light in the room he suddenly saw a greenish glow in the darkness, fluorescence, which emanated from the screen covered with barium platinum-cyanide crystals.
On March 2, 1949 the airplane Lucky Lady II (United States Air Force Boeing B-50 Superfortress) became the first one to circle the world nonstop.
On May 13, 1825, Leopoldo Nobili demonstrated the first astatic galvanometer, a historical instrument that measures electric current.
The Greek scientist Eratosthenes was the first in the world to calculate the radius of the Earth, it was on June 19, 240 BC, 2264 years ago.
The first competition between radio operators took place in Philadelphia on February 22, 1910. The jury evaluated the speed and accuracy of the Morse code they transmitted.
Since there were no general rules some organizations developed their own distress signals. The first signal was CQD which was approved on January 7, 1904 by "Circular 57" of the Marconi International Marine Communication Company and it was intended for ships equipped with its radios...
On December 20, 1880 Broadway became one of the first streets in the US lit by electric light bulbs. Later it was called "Great White Way".
The first electromagnet was created by William Sturgeon who demonstrated it to the Society of Arts on May 23, 1825.
On June 4, 1896, in a tiny workshop Henry Ford put the finishing touches on his pure ethanol-powered motor. After more than two years of experimentation, Ford had completed his first experimental automobile.
Coaxial cable is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric (insulating material).
On March 10, 1876 Alexander Bell used the first telephone in Boston to call Thomas Watson who was in another room but out of earshot.
Clément Ader, engineer and electrical and mechanical inventor, was fascinated by the idea of mechanical flight and spent a lot of time and money to make it come true. In 1886 he built his first aircraft which was called Éole also known as Avion (French for aeroplane).
In 1820, the Danish professor of physics, Hans Christian Oersted demonstrated a simple experiment on electricity at a lecture. During the demonstration he discovered that the electric current passing through the wire affects the magnetic compass needle located under it which was the first connection found between electricity and magnetism. According to one version this happened on February 15, 1820.
On November 18, 1971 Intel released its first microprocessor (Model 4004), which started a revolution in electronics.
International Day of Happiness is a global event arranged by the United Nations annually on March 20. It serves to remind us that being happy is a human right and worth celebrating.
Pi Day is an annual celebration of the mathematical constant π. Date March 14 is chosen because of 3/14 in the month/day format.
On October 25, 1955 Tappan Company for the first time introduced a domestic microwave oven weighing about 60 kg.
Phonograph, the first device for recording and reproducing sound, was invented by Thomas Edison and introduced on November 21, 1877.
It is believed that the first voltmeter was invented by M. Faraday, in 1830, a year before he discovered the phenomenon of electromagnetic induction, on which the operation of a whole class of electrical measuring instruments is based, and half a century before the adoption of the voltage unit “volt”. Interestingly, no drawings of this voltmeter could be found.
On December 9, 1968, American inventor Douglas Carl Engelbart demonstrated the first computer mouse to the public at the San Francisco Computer Science Conference.
This holiday takes place on April 7 every year. Now often used as a synonym for the International System of Units (or SI), the metric system is a system of measurement used in most countries of the world except the USA and a few other countries.
On November 9, 1942, US Army radio operator Harry Turner set a record for the fastest speed (175 characters per minute) of transmitting Morse code characters sent by a straight key.
National Countdown Day is celebrated on March 21 every year. It ticks down the minutes, seconds, or days to events — big or small.
National Metric Day is celebrate on the 10th day of the 10th month and it recognizes the metric system, its history, and its benefits.
On September 23, 2011 National Semiconductor, a semiconductor manufacturer specializing in analog devices and components, became a part of Texas Instruments Corporation as its division and representative office in Silicon Valley.
The National Institute of Standards and Technology (NIST) developed an instrument to measure nanodistance. The "nanoruler" made of silicon makes it possible to estimate the size of micro-objects with 0.3 nanometers accuracy which is comparable to the diameter of a radon atom.
On October 4, 1675 Christiaan Huygens (Dutch mechanic, physicist, mathematician, astronomer and inventor) patented the pocket watch.
On November 21, 1905, Albert Einstein published his article “Does the Inertia of a Body Depend Upon Its Energy Content?” in “Annalen der Physik” journal.
The fundamental three-volume work of Isaac Newton "Philosofiae naturalis principia mathematiсa", which kept the foundations of modern physics and astronomy, was first published on July 5, 1687.
On March 4, 1877, American inventor Emile Berliner patented a voice transmitter containing charcoal powder placed between two metal plates. That was what we call now “microphone”.
On 24th May 1844, Samuel Morse tested a message transmission from Washington to Baltimore at a distance of about 60 km. It was a biblical text “What Hath God Wrought”.
The British Broadcasting Corporation (BBC), the national broadcaster of the United Kingdom, was created on October 18, 1922. Headquartered at Broadcasting House in London, it is the world's oldest national broadcaster, and the largest broadcaster in the world by number of employees.
USB (Universal Serial Bus) appeared by computer standards quite a long time ago - the version of the first approved variant of the standard appeared on January 15 in 1996.
A total solar eclipse occurred on 11 August 1999 with an eclipse magnitude of 1.0286. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth.
On September 25, 1928, two brothers Paul and Joseph Galvin found Galvin Manufacturing Corporation. The profile of the new enterprise was the design and production of electronic devices.
World Metrology Day is an annual celebration of the signature of the Metre Convention on 20 May 1875 by representatives of seventeen nations.
Celebrated every 10 November, World Science Day for Peace and Development highlights the significant role of science in society and the need to engage the wider public in debates on emerging scientific issues. It also underlines the importance and relevance of science in our daily lives.
World Standards Day is celebrated around the world every year on October 14. This date was specifically chosen to mark the date, in 1946, when delegates from 25 countries first gathered in London and decided to create an international organization (ISO) focused on facilitating standardization.
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