Luigi Puccianti, (1875 - 1952) is notable for having constructed a highly sensitive spectrograph, with which he studied the infrared absorption of many compounds and attempted to correlate the spectra with molecular structure. He studied the emission spectra of metals and halogens and proposed measuring the wavelength of x-rays by using a diffraction grating at large angles of incidence. For Acoustic uses in spectrographs of sound waves, see below. ... A materials emission spectrum is the amount of electromagnetic radiation of each frequency it emits when it is heated (or more generally when it is excited). ... The halogens are a chemical series of nonmetals. ... In the NATO phonetic alphabet, X-ray represents the letter X. An X-ray picture (radiograph) taken by Röntgen An X-ray is a form of electromagnetic radiation with a wavelength approximately in the range of 5 pm to 10 nanometers (corresponding to frequencies in the range 30 PHz...

He is particularly naoble for being the doctoral advisor of the Nobel prize winner Enrico Fermi. Nobel Prize medal. ... Enrico Fermi (September 29, 1901 – November 28, 1954) was an Italian physicist most noted for his work on the development of the first nuclear reactor, and for his contributions to the development of quantum theory, particle physics and statistical mechanics. ...

Puccianti obtained his PhD in 1898 at the University of Pisa under Angelo Battelli. The University of Pisa (Italian Università di Pisa) is one of the most renowned Italian universities. ...

References

• Nuovo Cimento, [ser. 9] 1952, 9(suppl.), pp. 478-479.