The first commercially successful technique of photography was invented by the French Louis Daguerre.
A compound ion, the main source of nitrogen for plants.
One of the oxoacids of nitrogen. A colourless compound with a pungent odour, a strong oxidant.
A white, crystalline compound which breaks down when exposed to light.
A white, crystalline compound that breaks down when affected by light.
A light yellow compound formed in the reaction of silver nitrate and potassium iodide.
Metal atoms form a regular lattice structure.