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Albert Einstein correctly described the photoelectric effect by suggesting that electrons had certain discrete energy levels, and that light was composed of particles which carried certain discrete energies. He showed that the energy that these light particles (photons) carried was proportional to the frequency of the light. So for certain frequencies of light, electrons in a material could absorb the photons and gain the energy needed to leave the material. Albert Einstein discovered the quantum of light.
Louis de Broglie then suggested that if light (a wave) could also be described by photons (particles), then perhaps electrons (particles) could be described as waves. A series of experiments showed that de Broglie's theory was correct.
Erwin Schrödinger later discovered an equation which correctly modeled the wave nature of matter.
Many textbooks attribute the discovery of quantum mechanics to Max Planck, and he won the 1918 Nobel prize for "the discovery of energy quanta," but neither he nor the vast majority of the scientific community at the time (at the time of his 1900 discovery of the Planck radiation law, that is) recognized that his use of energy quanta in describing black body radiation suggested a new hypothesis that would be later known as quantum theory (see Kragh, Helge. "Max Planck: The Reluctant Revolutionary." Physics World. December 2000)
In short, the discovery of quantum mechanics was an extended process which could not have been made possible if it were not for several physicists.
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What Four interesting facts about mechanical clocks?
Mechanical clocks date back to ancient Greece and China, with early models using water or weights to power the movement. The mechanical pendulum clock was invented by Dutch scientist Christiaan Huygens in 1656, leading to significant improvements in timekeeping accuracy. Many famous clockmakers, such as John Harrison and George Graham, revolutionized mechanical clock design with innovations like escapements and compensating balances. The popularity of mechanical clocks declined with the introduction of quartz and atomic timekeeping technology in the 20th century, but they continue to be appreciated for their craftsmanship and traditional charm.
On what date was the ballpoint pen invented?
The ballpoint pen was invented on October 30, 1888, by John J. Loud, but it was not commercially successful. The modern version of the ballpoint pen that we use today was invented by László Bíró in 1938.
When the glass invented?
The exact date of when glass was first invented is uncertain, but it is believed to have been around 3500 BCE in Mesopotamia. The earliest glass artifacts were produced by heating sand and other natural materials to create a transparent material.
What specific date was the PET scan invented?
Invented by Proffesor Michael Anthony Principe and his accomplish Kosta Kolaj in 1983 and suitable for humans in 1996.
Who invented lever and screw?
The earliest remaining writings regarding levers date from the 3rd century BC and were provided by Archimedes.The screw was one of the last of the simple machines to be invented. It first appeared in ancient Greece, and by the first century BC was used in the form of the screw press and the Archimedes screw, but when it was invented is unknown.
What date was it when Henry Ford invented the Model T?
The very first production Model T Ford (1909 model year) was assembled at the Piquette Avenue Plant in Detroit, Michigan on October 1, 1908.
Date sheet for diploma in mechanical?
yes
What year was television invintied?
Philo Farnsworth, an Idaho farm boy invented the first non-mechanical Tele-vision in 1927, but 1929 is the date if its first for-real broadcast. (Of his wife)
What date was velcro invented?
It was invented in 1948.
What is the DVD release date for quantum of solace?
The release date is 23rd of March Monday GHAYOOR HAIDER www.youtube.com/ghayooragain
Where was the first caclulator invented?
The oldest calculator, the abacus, was invented in ancient Egypt(unknown date). The first Mechanical calculator, known as the Calculating clock, was invented by Willhelm Schickard in 1623. The first electronic desktop calculator were announced by the Bell Punch Co, in Uxbridge England in 1961. Finally, the first handheld computer was invented in 1980.
What date was the telegraph invented?
it was invented in the 1830's
What date was Guitar Hero invented?
It was invented in 2005.
Who invented life support system?
what date was it invented
What date was the Xerox Alto invented?
It was invented in 1973
What date was the bicycle invented?
the bike was invented in the 1860s
What was the date that the radio was invented?
It was invented around 1880.
