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A 175-watt mercury-vapor light approximately 15 seconds after starting. A closeup of a 175-W mercury-vapor lamp. The small diagonal cylinder at the bottom of the arc tube is a resistor which supplies current to the starter electrode. A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized mercury to produce ...
In 1860, at a time when the hatmaking industry in towns such as Newark, Orange and Bloomfield was growing rapidly, a physician from Orange called J. Addison Freeman published an article titled "Mercurial Disease Among Hatters" in the Transactions of the Medical Society of New Jersey. This groundbreaking paper provided a clinical account of the ...
Mercury vapor is the primary hazard of elemental mercury. As a result, containers of mercury are securely sealed to avoid spills and evaporation. Heating of mercury, or of compounds of mercury that may decompose when heated, should be carried out with adequate ventilation in order to minimize exposure to mercury vapor.
The introduction of the metal vapor lamp, including various metals within the discharge tube, was a later advance. The heat of the gas discharge vaporizes some of the metal and the discharge is then produced almost exclusively by the metal vapor. The usual metals are sodium and mercury owing to their visible spectrum emission.
It has a red or orange color. Mercury(II) oxide is a solid at room temperature and pressure. The mineral form montroydite is very rarely found. History.
But that same phenomenon can also sometimes make skies look red or orange. Here's a breakdown of how and why it all happens. But the science behind a blue sky isn't that easy.