Mercury oxide, black (Hahnemann). "Yellow Mercury Oxide" is a synonym for "Red Mercury Oxide." Black sulfur (Scheele) or black phosphorus (Vogelstein et al.) have also been used.
The term "black mercury" was first used by Hahnemann to describe the inorganic compound mercurous chloride (HgCl2). He observed that this substance turned black when dried and burned. Modern scientists no longer use the term "black mercury" because it can be misleading, since other metals can turn black too. Instead, they call it mercurous chloride.
Hahnemann believed that black mercury had powerful healing properties. He wrote that the metal could be used to treat headaches, epilepsy, and arthritis if enough of it was available. Although modern science has not confirmed these claims, they are still widely reported by some traditional medicine practitioners.
Black sulfur and red sulfur are two forms of sulfur. They both exist as crystals but they are different sizes and have different colors. Black sulfur is dark gray to black, while red sulfur is bright red to orange-red. Both substances are toxic if ingested but they react with each other in different ways.
Elemental mercury, often known as quicksilver, is a gleaming, silver-white metal that is liquid at ambient temperature. It is found in some older thermometers, fluorescent light bulbs, and electrical switches. Modern thermometers use IR sensors instead.
Elemental mercury can become liquid at room temperature if it comes into contact with oxygen or other gases. The gas must be able to dissolve into mercury for this to occur; otherwise, the mercury will simply evaporate. Common gases that fit this description include hydrogen, nitrogen, oxygen, carbon dioxide, and fluorine. Gases that do not fit this description include argon, neon, krypton, and xenon.
The most common use for elemental mercury is in barometers. A piece of paper dipped in mercury will rise when air pressure increases because the mercury will flow upward until it reaches the top of the tube. At that point, the paper will stop rising because there is no more mercury to lift it any further.
Mercury has many properties that make it useful as a conductor of electricity. In fact, it is used as a wiring material in some instruments like radio receivers. When exposed to air, mercury will oxidize and lose its conductivity, so it needs to be kept in a vacuum or under a high-pressure gas to prevent this from happening.
The major lines in mercury have wavelengths of purple (405 nm), blue (436 nm), blue-green (492 nm), greenish yellow (546 nm), yellow (577 nm), orange (623 nm), and red (691 nm). Keep in mind that 1 nm equals 10-9 m. So, a wavelength of 405 nm is 3,094.5 m or 0.03954 km.
Mercury has two outer layers: an iron core surrounded by a layer of silver-like metal called omerta. The diameter of its core is about 5344 m. Its mass is about 98.90537 kg. Its speed through water is about 0.01 ms-1 or 0.9 m per second because it has less mass than water so it accelerates more quickly.
At its closest point to the earth (about 38 million km), Mercury's orbit is almost entirely elliptical with an eccentricity of nearly 0.25. But at its farthest point from the earth (about 46 million km), its orbit is almost circular.
So, its average distance from the earth is 39 million km, but because it does not stay put like the other planets it comes much closer sometimes and goes farther away others times.
This ellipse shape means that there are two seasons, one for spring and one for autumn.
Elemental mercury is a gleaming, silver-white metal that is a liquid at ambient temperature and has long been used in thermometers and electrical switches. Mercury vapours have no color and no odor. The more vapour is emitted from liquid metallic mercury as the temperature rises. The vapors are very toxic.
The word "mercury" comes from the Latin mercurius, which means "of or relating to mercury". In English, it was once also used as a term of abuse until it was discovered that the supposed bearer of the insult was not actually guilty of any crime. Today, mercury is a common element with an atomic number 80 and a mass ratio of 79.8%. It is a hard, malleable, ductile metal that is used in many products including dental fillings, batteries, light bulbs, and thermometers. It is also used in laboratory experiments because its properties change depending on how it is treated.
Mercury is poisonous because it is both a metal and a chemical element. It can enter your body through skin contact with elemental mercury or by eating fish or other animals that have eaten contaminated water plants. You can be exposed to mercury even if you do not touch it yourself because of its presence in some foods such as shark fin soup and deer meat. If you consume more than the recommended amount of mercury over a long period of time, it can cause serious health problems.