Alloys of gold and silver – amalgam

Alloys of gold and silver - amalgam

Alloys of gold and silver amalgam Gold amalgam Gold is the metal more easily combined with mercury, obtaining amalgams by direct binding of the two metals. If gold comes from the reduction of some of its salts, as the precipitate is very thin, the combination does not verify with ease, because gold powders float long […]

smoke detector types

smoke detector types

smoke detector types Smoke alarms detect much faster than heat detectors fire. There are currently three types of smoke detectors in the market: ionization detector, combined by ionization and photoelectric detector. Ionization smoke detector contains a small amount of radioactive material. The radiation passes through the ionization chamber which is full of air between two […]

Power of the smoke detectors

Power of the smoke detectors

Power of the smoke detectors Each smoke detector works with different power sources. Smoke alarms that work with 9 volt battery are very popular because of its low cost; However, it should be recalled that it is necessary to change the battery regularly. There are also available smoke detectors with 120 Volt and battery detectors […]

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