SECTION A.— MATHEMATICAL AND PHYSICAL SCIENCES. 



NOISE AND THE NATION 



ADDRESS BY 



G. W. C. KAYE, O.B.E., M.A., D.Sc, 



PRESIDENT OF THE SECTION. 



Applied Physics and related Matters 

 Acoustics and the British Association 

 Noise and the Nation. 

 The Measurement of Noise. 

 The Decibel and the Phon. 

 Noise Meters. 



(i) Subjective Noise Meters. 

 (ii) Objective Noise Meters. 



The Analysis of Noise. 

 Noise Level Measurements. 

 Noise on the Railway. 

 Noise in the Air. 

 Noise on the Road. 



(i) Ministry of Transport Tests. 



(ii) Tests on New Motor Vehicles. 



(iii) Tests on ' Used ' Motor Vehicles. 



(iv) Summary of Tests. 



(v) Motor Horns. 



(vi) Pneumatic Road Drills. 



The Abatement of Noise. 

 Quiet Housing. 



(i) The Insulation of Walls and Windows. 



(ii) The Insulation of Floors. 



(iii) Sound Absorbent Treatment of Rooms. 



Applied Physics and related Matters. 



There is a feeling, which of late years has been gathering strength, that 

 the primary concern of the British Association should be to bring home 

 to the community how much its welfare and its interests owe, and are 

 likely to owe in the future, to science and its developments. Our 

 President at Blackpool last year emphasised this outlook in his address 

 on ' The Impact of Science on Society ' ; and we in Section A have 

 thought it well this Coronation year to devote the greater part of our 

 proceedings to some of the beneficent influences of applied physics on 

 the complex social and industrial life of the nation. We feel that in 



