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When was the first airplane introduced?
The first airplane was introduced about 1897.
When were cattle first introduced to Australia?
Cattle were first introduced with the First Fleet in January 1788.
When was the factory act first introduced?
The factory act was first introduced in 1833.
When was the tank introduced?
The first tanks were introduced on to the battlefield by the British in the First World War.
When were Christmas trees first introduced to the UK?
Christmas trees were introduced by the germans.One of the first christmas trees was introduced by Albert Saxcoburg,Queen Victoria's husband.
What does the 2 in alpha particle represent?
The symbol for an alpha particle is 24He2+. The first 2 means that there are 2 protons. The second 2+ means that the net charge is +2, which means, since there are 2 protons, that there are no electrons. The result is that an alpha particle is a helium nucleus without its electrons, i.e. 2 protons and 2 neutrons, but no electrons.
Why electron is the lightest particle?
It's not. There are many particles lighter than electrons. As to why electrons have the mass they do... the first person to figure that out goes on the short list for a free trip to Sweden and a nice medal.
Who explained the wave nature and the particle nature of an electron?
That their was a unit of charge, for which no smaller amount of charge could exist, was first suggested in the late 1800s. In 1896, J.J. Thomson showed that a negatively charged particle was a fundamental particle of nature -- ie, that electrons had a particle nature. Louis de Broglie, in his 1924 thesis, suggested that electrons also had a wave nature, with a wavelength dependent on a particle's momentum. Experiments in 1927 showed that he was correct.
When was the first subatomic particle discovered?
This particle was the electron.
When was the first airplane introduced?
The first airplane was introduced about 1897.
What is the invisible negatively changed particle?
There are many subatomic particles with negative charge, but the first negatively charged particle that anyone learns about is the electron. It is only invisible in the sense that humans can not see it because it is so small. It is a perfectly normal subatomic particle and certainly the most common negatively charged particle in the universe.
Which subatomic particle was the first to be identified?
This particle was the electron (J.J.Thomson, 1897).
Who was the scientist who first proposed that electrons existed in only certain energy level about nucleus?
The scientist who first proposed that electrons existed in only certain energy levels around the nucleus was Niels Bohr. His model of the atom, known as the Bohr model, introduced the concept of quantized energy levels and provided a framework for understanding the behavior of electrons in atoms.
When was melodrama first introduced?
it was introduced in 1923
When were cattle first introduced to Australia?
Cattle were first introduced with the First Fleet in January 1788.
Where was the first camcorder introduced?
The first camcorder was introduced around 1982 by JVC.
When was the factory act first introduced?
The factory act was first introduced in 1833.
