morale
发表于 2025-3-25 07:06:16
Astronomical Photometry978-94-011-2476-8Series ISSN 0067-0057 Series E-ISSN 2214-7985
Dawdle
发表于 2025-3-25 09:06:58
Forschungs-Management am Scheideweg?,s with measuring the intensity of light”. It is also “the practice of using a photometer”. When measuring monochromatic light quantities, photometric methods are straightforward, but when comparing light sources with different spectral energy distributions, measurements become more problematic.
CHAFE
发表于 2025-3-25 14:35:07
Die Konstitutionsfunktion des Kriegesy be approximately considered to consist of a constant term, and of a variable quantity. The constant part of attenuation of light is the extinction, whereas the constant term of the deflection of light is the refraction. The rapid variations are random fluctuations—respectively called . and .—which are caused by atmospheric turbulence.
拖网
发表于 2025-3-25 18:00:51
Ernst Burrichter,Wolfram Schoenwald are possible. But conducting the photometric observations themselves is more critical, because one night of measurements can never be repeated. Observing does not allow an idle pace. Correct decisions have to be taken at once and back-pedalling is impossible.
GEON
发表于 2025-3-25 23:31:24
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Detain
发表于 2025-3-26 04:09:02
https://doi.org/10.1007/978-3-663-08040-4.e., changes the magnification), but it should be remembered that radiance of a light beam cannot be increased by optical means (see Section 1.2.1). As a matter of fact, radiance is effectively reduced due to transmission losses in and at the surfaces of the optical components, which modify the func
Synthesize
发表于 2025-3-26 07:13:59
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BROOK
发表于 2025-3-26 09:33:21
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不能妥协
发表于 2025-3-26 14:44:32
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Generosity
发表于 2025-3-26 19:03:18
Forst-Akademien oder allgemeine Hochschulen?by the quality of the instrumentation. In most experiments, the measuring apparatus has to be calibrated in order to ensure conformity to the established standards. For instance, land-surveyors and geometers need to know whether they use an accurate unit of length. It is quite easy to apply a relati