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Here is the wavelength of light, and ¯ is the luminous efficiency function, which represents the eye's sensitivity to different wavelengths of light. Luminous energy is the integrated luminous flux in a given period of time: Q v = ∫ 0 T Φ v ( t ) d t {\displaystyle Q_{\mathrm {v} }=\int _{0}^{T}{\mathit {\Phi _{\mathrm {v} }}}(t)\,\mathrm ...
This power is not a measure of the amount of light output, but rather indicates how much energy the bulb will use. Because incandescent bulbs sold for "general service" all have fairly similar characteristics (same spectral power distribution), power consumption provides a rough guide to the light output of incandescent bulbs.
People with protanopia have essentially no sensitivity to light of wavelengths more than 670 nm. Most non-primate mammals have the same luminous efficiency function as people with protanopia. Their insensitivity to long-wavelength red light makes it possible to use such illumination while studying the nocturnal life of animals. [18]
Spectral sensitivity is the relative efficiency of detection, of light or other signal, as a function of the frequency or wavelength of the signal. In visual neuroscience , spectral sensitivity is used to describe the different characteristics of the photopigments in the rod cells and cone cells in the retina of the eye .
Codex Sinaiticus Rescriptus, mostly originating in Saint Catherine's Monastery, Sinai from Sin. Georg. 34; Tsagareli 81, [1] is a collection of nineteen Christian Palestinian Aramaic palimpsest manuscripts containing Old Testament, Gospel and Epistles pericopes of diverse Lectionaries, among them two witnesses of the Old Jerusalem Lectionary, [2] various unidentified homilies and two by John ...
Appendix: Observations on the discovery, by Professor Lepsius, of sculptured marks on rocks in the Nile valley in Nubia; indicating that, within the historical period, the river had flowed at a higher level than has been known in modern times.
So they carried the ark and the tabernacle which Moses had pitched, and all the vessels that were for ministration to the sacrifices of God, and removed them to the temple. ... Now the ark contained nothing else but those two tables of stone that preserved the ten commandments , which God spake to Moses in Mount Sinai , and which were engraved ...
The Rabi frequency is the frequency at which the probability amplitudes of two atomic energy levels fluctuate in an oscillating electromagnetic field. It is proportional to the transition dipole moment of the two levels and to the amplitude (not intensity) of the electromagnetic field.