When X-rays traverse matter of any kind, this matter becomes a source of a radiation similar in character to that of the primary radiation falling upon it.

The process of radiation may be, and is, continuous - at any rate within limits extending to far smaller quantities than the quantum.

We are all dwellers on this one small earth; we live one life, die one death; we have the same difficulties to contend with; we ought in common to fight the foes of ignorance and wrong.

It seems to me that the Swedish Academy of Science may be qualifying for the Nobel Peace Prize. It recognises no nationality; it discourages unworthy national feeling and prejudice.

The Nobel Prize is without doubt the highest honour, the most coveted honour, which can be bestowed on a scientist.

As an Englishman, permit me now to say with what pleasure I learnt of the election of Professor Planck and Professor Stark to the Nobel Prizes for the years 1918 and 1919.