| E. Leavenworth Elliot - 1912 - 728 halaman
...Brightness b or apparent specific intensity of an element of a luminous surface from a given position, is **the luminous intensity per unit area of the surface...projected on a plane perpendicular to the line of** light, and including only a surface of dimensions small in comparison with the distance to the observer.... | |
| American Institute of Electrical Engineers - 1914 - 1134 halaman
...radiation. Then, for surfaces obeying Lambert's cosine law of emission. E' = TT&o. 861 Brightness, b, of **an element of a luminous surface from a given position,...dimensions negligibly small in comparison with the distance** to the observer. It is measured in candles per square centimeter of the projected area. Defining equation:... | |
| American Institute of Electrical Engineers - 1914 - 104 halaman
...in the CGS system. 468 Brightness, b, of an Element of a Luminous Surface from a Given Position is **the luminous intensity per unit area of the surface...dimensions negligibly small in comparison with the distance** to the observer. It is measured in candles per * Sections 460 to 496, on Illumination and Photometry... | |
| William Hannum Grubb Bullard - 1915 - 898 halaman
...exposure in the CGS system. Brightness, b, of an element of a luminous surface from a given position is **the luminous intensity per unit area of the surface...dimensions negligibly small in comparison with the distance** to the observer. It is measured in candles per square centimeter of the projected area. Denning equation... | |
| Matthew Luckiesh - 1916 - 324 halaman
...scale of brightnesses, it appears of interest to discuss brightness and its measurement. Brightness **may be expressed in terms of the luminous intensity...dimensions negligibly small in comparison with the distance** to the observer. It is measured in candles per square centimeter, square inch, etc., of the projected... | |
| 1919 - 902 halaman
...in terms of brightness. The brightness, B, of an element of luminous surface from any point of view **may be expressed in terms of the luminous intensity per unit area of** that surface projected on a plane perpendicular to the line of sight. When expressed in this manner... | |
| Olin Jerome Ferguson - 1920 - 266 halaman
...many other countries, is frequently referred to as the international candle. 13. Brightness, b, of **an element of a luminous surface from a given position,...including only a surface of dimensions negligibly small** hi comparison with the distance at which it is observed. It is measured in candles per square centimeter... | |
| Hermann Bohle - 1925 - 464 halaman
...INTRINSIC OR PRIMARY BRIGHTNESS, i, of an element <fe of a luminous surface from a given position, is **the luminous intensity per unit area of the surface...projected on a plane perpendicular to the line of sight,** using an area negligibly small. It is measured in candles per unit area of the projected area. Let... | |
| 1920 - 1028 halaman
...in terms of brightness. The brightness, B, of an element of luminous surface from any point of view **may be expressed in terms of the luminous intensity per unit area of** that surface projected on a plane perpendicular to the line of sight. When expressed in this manner... | |
| Frank Fuller Fowle, Archer Eben Knowlton - 1915 - 2032 halaman
...luminous intensity, or brightness (b), of an element of a luminous surface, from a given position, is **the luminous intensity per unit area of the surface...sight, and including only a surface of dimensions** small in comparison with the distance from the observer. The conventional unit is the candle per square... | |
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