The energy of an electron after the collision is studied by determining the retarding potential which it can still overcome. Gustav Ludwig Hertz
The energy of an electron after the collision is studied by determining the retarding potential which it can still overcome.
In the experimental investigation of these processes a given energy is usually imparted to the electrons by accelerating them by a given voltage. Gustav Ludwig Hertz
In the experimental investigation of these processes a given energy is usually imparted to the electrons by accelerating them by a given voltage.
Hence, only given amounts of energy can be transferred to the atom, and each of the possible energy amounts is equal to the excitation energy of a given excited state of the atom. Gustav Ludwig Hertz
Hence, only given amounts of energy can be transferred to the atom, and each of the possible energy amounts is equal to the excitation energy of a given excited state of the atom.
As a special case we will now consider the excitation energy for producing the state associated with the term T = o. This is the term on which all the term series converge with increasing current numbers. Gustav Ludwig Hertz
As a special case we will now consider the excitation energy for producing the state associated with the term T = o. This is the term on which all the term series converge with increasing current numbers.
The reason why the energy levels are negative here, is simply due to the omission of an arbitrary constant which has always to be added to the energy; here it is omitted because we are simply determining the energy differences. Gustav Ludwig Hertz
The reason why the energy levels are negative here, is simply due to the omission of an arbitrary constant which has always to be added to the energy; here it is omitted because we are simply determining the energy differences.
The fact that atoms are capable of exchanging energy with electromagnetic radiation, led the classical physicists to conclude that atoms must contain moving electrical charges. Gustav Ludwig Hertz
The fact that atoms are capable of exchanging energy with electromagnetic radiation, led the classical physicists to conclude that atoms must contain moving electrical charges.
Radiant energy, which at the beginning [of the universe] played a predominant role in the evolutionary process, gradually lost its importance and by the end of the thirty-millionth year yielded its priority in favor of ordinary atomic matter. George Gamow
Radiant energy, which at the beginning [of the universe] played a predominant role in the evolutionary process, gradually lost its importance and by the end of the thirty-millionth year yielded its priority in favor of ordinary atomic matter.
The one is like spending the interest on a legacy, and the other is like spending the legacy itself. ... [There is] a still hardly recognised coming energy problem. Frederick Soddy
The one is like spending the interest on a legacy, and the other is like spending the legacy itself. ... [There is] a still hardly recognised coming energy problem.
In so far as such developments utilise the natural energy running to waste, as in water power, they may be accounted as pure gain. But in so far as they consume the fuel resources of the globe they are very different. Frederick Soddy
In so far as such developments utilise the natural energy running to waste, as in water power, they may be accounted as pure gain. But in so far as they consume the fuel resources of the globe they are very different.
Mankind has always drawn from outside sources of energy. This island was the first to harness coal and steam. But our present sources stand in the ratio of a million to one, compared with any previous sources. Frederick Soddy
Mankind has always drawn from outside sources of energy. This island was the first to harness coal and steam. But our present sources stand in the ratio of a million to one, compared with any previous sources.
The history of man is dominated by, and reflects, the amount of available energy. Frederick Soddy
The history of man is dominated by, and reflects, the amount of available energy.
I believe that there have been civilisations in the past that were familiar with atomic energy, and that by misusing it they were totally destroyed. Frederick Soddy
I believe that there have been civilisations in the past that were familiar with atomic energy, and that by misusing it they were totally destroyed.