|Letter from William Crookes, FRS, to James Mackenzie Davidson
|31 October 1913
|Informs Mackenzie Davidson that he has considered his problem and can offer no solution. Notes that while cathode rays can travel outside the vacuum tube, the aluminium window through which they have to pass must be very thin, and only of very small area or it would be crushed inwards by the pressure of the air.
Fellows associated with this archive
|Crookes; Sir; William (1832 - 1919); chemist
|1832 - 1919