IN a recent communication in these columns, Daly and Sutherland 1 have described a new instrument in which an infra-red spectrum is traced upon a cathode ray screen having a long persistence of glow, ...

Ok, you want to get an oscilloscope. Where do you start? This TechXchange includes content that will be useful for the operation of a scope in your test environment. This includes considerations like ...

We note that Dr. Thompson and his colleagues do not consider there is anything improper in failing to acknowledge information given to them considerably before the date of publication.