Abstract: An apparatus comprises: a first narrow bandwidth electromagnetic wave filter, a second narrow bandwidth electromagnetic wave filter, and an electromagnetic wave dispersive filter. The first narrow bandwidth electromagnetic wave filter is configured to: convert a wide bandwidth signal to a first monochromatic signal; and direct the first monochromatic signal to at least one first pixel. The second narrow bandwidth electromagnetic wave filter is configured to: convert the wide bandwidth signal to a second monochromatic signal; and direct the second monochromatic signal to at least one second pixel. The electromagnetic wave dispersive filter is configured to: convert the wide bandwidth signal to a spatially distributed wide bandwidth spectrum; and direct the spatially distributed wide bandwidth spectrum to third pixels.

Abstract: A calibration device receives at least a first multispectral measurement of: a first monochromatic signal taken at a first pixel location; a second multispectral measurement of a second monochromatic signal taken at a second pixel location; and a multiplicity of third multispectral measurements of a spatially distributed wide bandwidth dispersed spectrum, of a wide bandwidth signal, taken at a multiplicity of third pixel locations. The device relates known pixel values of wavelengths to pixel values of measured wavelengths. The device outputs spectrum wavelength and power calibration values for the multispectral imaging system, comprising at least a relation of: a first third pixel location to a first known wavelength; and a second third pixel location to a second known wavelength.

Abstract: A calibration device receives at least a first multispectral measurement of: a first monochromatic signal taken at a first pixel location; a second multispectral measurement of a second monochromatic signal taken at a second pixel location; and a multiplicity of third multispectral measurements of a spatially distributed wide bandwidth dispersed spectrum, of a wide bandwidth signal, taken at a multiplicity of third pixel locations. The device relates known pixel values of wavelengths to pixel values of measured wavelengths. The device outputs spectrum wavelength and power calibration values for the multispectral imaging system, comprising at least a relation of: a first third pixel location to a first known wavelength; and a second third pixel location to a second known wavelength.

Abstract: The present embodiments relate to selectively growing microalgae of a size suitable for the culturing of planktivorous finfish such as sardines, menhaden, herring, anchovy or shellfish such as oysters, clams, mussels, scallops, and sessile invertebrates such as sponges, coral, sea jellies, and other Cnidaria, or sedentary polychaete or bristle worms. A nitrogen to phosphorous content ratio of a nutrient medium may be measured. Nitrogen and/or phosphorous may be added to adjust the nitrogen to phosphorous content ratio in the nutrient medium to a ratio of 100:1 or higher. Microalgae may be grown in the adjusted nutrient medium. The environment may be controlled to produce microalgae with a predetermined diameter.

Abstract: A rotatable cord tensioning device is disclosed which is configured to include apertures for affixing one or more cords. Other apertures in the rotatable cord tensioning device are disclosed for securing the cord tensioning device in a rotated position. The rotation of the cord tensioning device tensions the cord by effectively shortening the length of the cord.

Abstract: Embodiments of the present disclosure demonstrate cavitating measuring devices. A liquid sample is cavitated to generate bubbles of gas. A frequency-specific radiation is emitted and passes through at least one bubble of gas. The frequency-specific radiation emerges from the bubble of gas as an absorption signal comprising the frequency-specific radiation. The absorption signal is detected and communicated to a system processor. The system processor analyzes the absorption signal data and determines the chemical components present in the liquid sample. Embodiments of the present disclosure describe both static and dynamic liquid samples. The liquid samples can be measured at the sample site.

Abstract: A cord tensioning device allows for a cord to be tightened around an object in a quick and easy-to-use manner. The cord tensioning device comprises a body having a front side, a back side, a left edge, a right edge, a top edge, and a bottom edge. At least two apertures are disposed through said body and at least one recessed slot is disposed in said body. At least one recessed slot extends from any of said edges.