| Автор | D E Caro |
| Автор | L H Martin |
| Дата выпуска | 1953-09-01 |
| dc.description | Measurements of the velocity of sound in tubes have been made in air over a range of pressures extending down to 5 mm Hg at frequencies of 250 c/s and 1000 c/s. The method employed was to measure the time of transit of a sinusoidal pulse between two condenser microphones separated by a distance of approximately 4 metres. After tube and gas corrections were made it was found that the velocity was independent of pressure between 760 mm Hg and 5 mm Hg. The mean velocity at 20°C obtained is 343.40 ± 0.02 m sec<sup>-1</sup> which is in good agreement with the generally accepted value 343.42 ± 0.07 m sec<sup>-1</sup> obtained by Hardy et al. for dry air free from carbon dioxide. No evidence was found of the increase in velocity at low pressures observed by Abbey and Barlow and by Maulard. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The Velocity of Sound in Air at Low Pressures |
| Тип | paper |
| DOI | 10.1088/0370-1301/66/9/306 |
| Print ISSN | 0370-1301 |
| Журнал | Proceedings of the Physical Society. Section B |
| Том | 66 |
| Первая страница | 760 |
| Последняя страница | 768 |
| Аффилиация | D E Caro; Physics Department, Melbourne University, Australia |
| Аффилиация | L H Martin; Physics Department, Melbourne University, Australia |
| Выпуск | 9 |
