Henri Poincaré Quote

As we can not give a general definition of energy, the principle of the conservation of energy signifies simply that there is something which remains constant.


The Value of Science (1905)


As we can not give a general definition of energy, the principle of the conservation of energy signifies simply that there is something which remains ...

As we can not give a general definition of energy, the principle of the conservation of energy signifies simply that there is something which remains ...

As we can not give a general definition of energy, the principle of the conservation of energy signifies simply that there is something which remains ...

As we can not give a general definition of energy, the principle of the conservation of energy signifies simply that there is something which remains ...