There are a few electrolyte abnormalities: hypokalemia, hypercalcemia, hyperkalemia and hypocalcemia. Hypokalemia is also referred to as low potassium. The main cause is loss of potassium in urine due to diuretic medicines. Diarrhea and vomiting can also contribute to hypokalemia.
The name of the first camera is camera obscura and is described to be the foundation on which most modern cameras are based on. Johann Zahn made the first camera, in 1685.
The very first patented film camera was the one devised by Wordsworth Donisthorpe in 1876. Another film camera was designed in England by Frenchman Louis Le Prince in 1888. An earlier 16 lens camera in 1887 at his workshop in Leeds.