| 摘要 |
Liquid dye filters for passing narrow spectral bands in astrophysical observations where combinations of various compounds in solution in methanol and acetone are used as dyes in thin layers between Pyrex glass plates to produce a homogeneous filter which selectively absorbs the major portion of the spectrum in and near visible light allowing only a narrow band in the lambda 3,000 to lambda 4,500 A. range to pass.
|
