respecting Sound and Light.
5
| Table i. | |||
| A | B | C | A is the area, in square inches, of an aperture nearly circular. B, the pressure in inches. C, the number of cubic inches discharged in one minute.
All numbers throughout this paper, where the contrary is not expressed, are to be understood of inches, linear, square, or cubic. |
| .00018 .00018 .00018 .001 .001 .001 .004 |
.25 .58 1. .045 .2 .7 .35 |
3.9 11.7 15.6 7.8 15.6 31.2 46.8 | |
| Table ii. | |||
| A | B | C | A is the area of the section of a tube about two inches long. B, the pressure. C, the quantity of air discharged in a minute, by estimation. |
| .07 .07 |
1. 2. |
2000. 2900. | |
| Table iii. | ||||
| A | B | C | D | A is the area of the section of a tube. B, its length. C, the pressure. D, the discharge in a minute. |
| .0064 .0064 .0064 .0064 |
1.15 10. 13.5 13.5 |
.2 .45 .35 .7 |
46.8 46.8 31.2 46.8 | |
| Table iv. | |||
| A | B | C | A is the area of an oval aperture, formed by flattening a glass tube at the end: its diameters were .025 and .152. B, the pressure. C, the discharge. |
| .003 | .28 | 46.8 | |
