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Aquarium with LED lighting. Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs, fluorescent tubes and LED lamps.Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [1]
Full-spectrum light is light that covers the electromagnetic spectrum from infrared to near-ultraviolet, or all wavelengths that are useful to plant or animal life; in particular, sunlight is considered full spectrum, even though the solar spectral distribution reaching Earth changes with time of day, latitude, and atmospheric conditions.
Another type of finder commonly found on amateur telescopes is known as a reflector (reflex) sight. This non-magnifying sight (technically not a "scope") uses a type of beam splitter to "reflect" a reticle generated by collimating optics into the users field of view.
Calcofluor-White is an fluorescent dye, meaning it has an excitation and emission wavelength that differs from one another. The excitation wavelength is 380 nm while the emission is 475 nm. The fluorescence can best be seen with ultraviolet light, but it can also be seen with violet or blue violet.
Far-red light is a range of light at the extreme red end of the visible spectrum, just before infrared light. Usually regarded as the region between 700 and 750 nm wavelength , it is dimly visible to human eyes.
Here is a list of currently existing astronomical optical interferometers (i.e. operating from visible to mid-infrared wavelengths), and some parameters describing their performance. Current performance of ground-based interferometers