The atomic theory is about two centuries now. John Dalton, one of the most vibrant scientists in his time, postulated the atomic theory in the year 1808 making it exactly 2 centuries and 2 years now.
John Dalton stated "all atoms of a given element are identical"; discovery of isotopes by Thomson infirmed this old hypothesis.
That was part of his atomic theory. We know now that that part of his atomic theory was incorrect.
Niels Bohr's key hypothesis was that electrons orbit the nucleus in specific energy levels or orbits, and they can only transition between these levels by absorbing or emitting specific amounts of energy. This hypothesis explained the discrete pattern of atomic spectra by linking the spectral lines to the energy differences between electron orbits.
The form hypothesis is the singular form. The plural form is hypotheses.
A good hypothesis for Venus could be: "Increased volcanic activity on Venus has contributed to the thick atmosphere and extreme surface temperatures observed on the planet."
lolololo
John Dalton stated "all atoms of a given element are identical"; discovery of isotopes by Thomson infirmed this old hypothesis.
John Dalton stated "all atoms of a given element are identical"; discovery of isotopes by Thomson infirmed this old hypothesis.
That was part of his atomic theory. We know now that that part of his atomic theory was incorrect.
In formulating his hypothesis, Bohr also considered the experimental evidence of atomic spectra and the quantum theory developed by Max Planck and Albert Einstein. Additionally, Bohr incorporated concepts from classical mechanics and Rutherford's model of the atom to propose his atomic model.
Louis de Broglie was the scientist who proposed the hypothesis of wave-particle duality. This idea helped to further the development of the theory of atomic structure, particularly in understanding the behavior of electrons within atoms.
"Old" name? I wasn't aware there was a new name; it's been nitrogen pretty much ever since it was discovered.
He was 30 years old.
Sadako Sasaki was 3 when the ATOMIC bomb hit.
A hypothesis
It's getting old and really Atomic Betty? omg get real
'Atomic Betty' debuted September 6, 2004 (2004-09-06) .